JP2002123262A - Device and method for simulating interactive sound field, and recording medium with recorded program thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interactive sound field simulation device capable of easily setting the information on a room form and a loudspeaker, and also evaluating an analysis result. SOLUTION: The interactive sound field simulation device 100 is provided with an input part 101 for inputting parameters thereto, a display part 103 for displaying a parameter input instruction and an analysis result, and a central processing part 104 for structuring a room model and setting a loudspeaker based on the inputted parameters and also analyzing a sound field, and when a user inputs each parameter from the input part 101 in an interactive form, the central processing part 104 structures a room form model and sets the speaker information for this room form model and analyzes the sound field based on these inputted parameters, and also judges whether or not this analysis result agrees with the reference value, and outputs the judgment result to a display part 103.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interactive sound field simulation apparatus for simulating a sound field in an arbitrary room by inputting parameters in an interactive manner.

[0002]

2. Description of the Related Art Conventionally, a sound field simulation system for artificially reproducing a sound field of a concert hall, a theater, or the like, constructs a room model by inputting a building shape and a building material used for an indoor wall surface. Input speaker information such as the type and location of the speakers that are actually installed, such as indoor sound pressure distribution characteristics or the characteristics of direct and indirect sounds at any point (hereinafter referred to as reflection characteristics). The sound field environment is simulated, and the shape of ceilings and walls before construction of a concert hall or theater, the wall material, and the location of speakers are being studied.

[0003]

However, in the sound field simulation system for simulating the sound field environment as described above, the room shape, wall material,
Many parameters, such as speaker placement, installation angle, and directional characteristics, had to be set, and a complicated input operation was required.

[0004] In addition, the simulated analysis results of the sound pressure characteristic and the reflection characteristic in the room have no evaluation for judging the sound field environment, but only the analysis result or the visual display of the analysis result. Evaluating the environment required specialized knowledge.

The present invention has been made in order to solve such a problem. Even a user having a low level of skill can easily set a room shape and speaker information and evaluate an analysis result. It is intended to provide an interactive sound field simulation apparatus capable of performing the simulation.

[0006]

In order to achieve the above object, an interactive sound field simulation apparatus of the present invention sets parameters in an interactive manner and analyzes an arbitrary room sound field. In the interactive form, input means for inputting information of a speaker disposed in the room, including data of the shape of the room and at least the arrangement position, directional characteristics, swing angle, and input power amount of the room, and input by the input means Setting the room-shaped model based on the respective information, and setting means for setting the speaker information to the room-shaped model; and setting the speaker information based on the room-shaped model and the speaker information set by the setting means. While analyzing the sound pressure distribution in the room model, an arbitrary area in the room model is set to a predetermined reference value. Has analyzing means for determining whether combined with the configuration and output means for outputting the result of the analysis by said analyzing means.

With this configuration, parameters such as room shape and speaker information can be input in an interactive manner, so that parameters can be easily input and a reference sound pressure level is set in advance. It is possible to determine whether or not the sound pressure level of an arbitrary area in the room model matches the reference sound pressure level, and the result of the determination can be output. The site environment can be easily evaluated.

Further, the interactive sound field simulation apparatus of the present invention has a database in which information on the speakers including at least the directional characteristics is recorded for each of the speakers, and the speaker arranged by the input means Is selected, the setting means acquires information on the selected speaker from the database and sets the information.

With this configuration, when a speaker to be set in the room type model is selected by the input unit, the setting unit can acquire the directivity of the speaker from the database and set the directivity of the speaker in the room type model. Since this information can be set without inputting information on the directional characteristics of the speaker to be set, the input can be simplified.

[0010] In the interactive sound field simulation apparatus according to the present invention, the output means may be configured to output the inside of the room model to an adaptation area conforming to the preset reference value and the preset reference value. The configuration is such that the output is made distinct from non-conforming areas that are not conforming.

[0011] With this configuration, the output means can output the respective areas in the room-shaped model while distinguishing between the analysis result of the conforming area of the reference sound pressure level and the analysis result of the non-conforming area of the reference sound pressure level. The sound field environment related to the sound pressure distribution in the indoor space can be easily evaluated.

Further, in the interactive sound field simulation apparatus according to the present invention, at least one of the input information input by the input means is changed, and the analysis means returns to the room based on the changed input information. While performing the analysis of the sound pressure distribution in the shape model, it has a configuration in which the analysis result analyzed based on the changed input information and the analysis result before the change of the input information are compared. ing.

According to this configuration, when a part of the input information is changed in the constructed room shape model and the set speaker information, and the sound pressure distribution is analyzed again, the re-analysis can be easily performed. And the results of the analysis can be compared.

Further, in the interactive sound field simulation apparatus according to the present invention, the output means uses the same room-shaped model for the analysis result before the input information is changed and the analysis result after the input information is changed. Output.

With this configuration, the analysis results before and after the change of the input information can be output using the same room-shaped model, and the analysis results before and after the change can be compared. The results can be evaluated.

Further, the interactive sound field simulation apparatus according to the present invention has a configuration in which the room-type model includes information on a sound absorption coefficient of the indoor wall surface.

With this configuration, in the indoor space, not only the analysis of the direct sound but also the analysis of the sound pressure distribution including the indirect sound can be performed.

Further, the interactive sound field simulation apparatus of the present invention is an interactive sound field simulation apparatus for setting parameters in an interactive manner and analyzing a sound field in an arbitrary room. Input means for inputting information of a speaker disposed in the room, including data of a sound absorption coefficient of the indoor wall surface and data of at least an arrangement position, a directional characteristic, a swing angle, and an input electric energy; and the information inputted by the input means And a setting unit configured to set the speaker information in the room model based on the room model and the speaker model based on the room model and the speaker information set by the setting unit. At least the sound pressure level of the direct sound and the indirect sound at a predetermined point of Analysis means for analyzing the arrival time up to and determining whether or not the point conforms to a preset sound pressure level difference between the direct sound and the indirect sound and a reference value of the arrival time difference; and Output means for outputting a result analyzed by the means.

With this configuration, parameters such as room shape and speaker information can be input in an interactive manner, so that the parameters can be easily input, and the sound pressure level difference between the direct sound and the indirect sound, and It is possible to set a reference value of the arrival time difference, determine whether or not an analysis value at an arbitrary point in the room model matches the reference value, and output the determination result. The sound field environment for the direct sound and the indirect sound in the space can be easily evaluated.

Further, the interactive sound field simulation apparatus of the present invention has a database in which information on the speakers including at least the directional characteristics is recorded for each of the speakers, and the speaker arranged by the input means. Is selected, the setting means acquires information on the selected speaker from the database and sets the information.

With this configuration, when a speaker to be set in the room type model is selected by the input unit, the setting unit can acquire the directional characteristics of the speaker from the database and set the directional characteristics of the speaker in the room type model. Since this information can be set without inputting information on the directional characteristics of the speaker to be set, the input can be simplified.

In the interactive sound field simulation apparatus according to the present invention, the output means outputs information on sound pressure levels and arrival times of the direct sound and the indirect sound at the point which does not conform to the reference value. The configuration is such that

According to this configuration, the output means can output information on the sound pressure level and the arrival time of the direct sound and the indirect sound at the point that does not conform to the reference value.
The sound field environment related to the characteristics of the direct sound and the indirect sound in the indoor space can be easily evaluated.

Further, the interactive sound field simulation apparatus according to the present invention has a configuration in which the output means outputs the arrival paths of the direct sound and the indirect sound using the room model. .

According to this configuration, the arrival path of the direct sound and the indirect sound at an arbitrary point can be output by the output means using the room model, so that the direct sound and the indirect sound in the sound field environment of the indoor space can be output. Characteristics can be easily evaluated.

In the interactive sound field simulation apparatus according to the present invention, at least one of the input information input by the input means is changed, and the analyzing means changes the point information based on the changed input information. At least the sound pressure level and the arrival time of the direct sound and the indirect sound are analyzed, and the analysis result analyzed based on the changed input information is compared with the analysis result before the input information is changed. It has such a configuration.

According to this configuration, when a part of the input information is changed in the constructed room shape model and the set speaker information, and the direct sound and the indirect sound are analyzed again, the re-analysis is easily performed. And the results of the analysis can be compared.

Further, in the interactive sound field simulation apparatus according to the present invention, the output means may use the same room-shaped model for the analysis result before the change of the input information and the analysis result after the change of the input information. It has a configuration to output.

With this configuration, the analysis results before and after the change of the input information can be output using the same room model, and the analysis results before and after the change can be compared, so that the analysis can be easily performed. The results can be evaluated.

The method of simulating a sound field by the interactive method according to the present invention is a method of simulating a sound field in an arbitrary room by setting parameters by the interactive method. An input step of inputting information of a speaker disposed in the room including at least the arrangement position, the directional characteristics, the swing angle, and the input power amount; and the room model based on the information input in the input step And a setting step of setting the speaker information in the room model, and analyzing a sound pressure distribution in the room model based on the room model and the speaker information set in the setting step. And determine whether or not an arbitrary area in the room model conforms to a preset reference value. An analysis step that has a configuration and an output step of outputting a result obtained by said analysis step.

With this configuration, parameters such as room shape and speaker information can be input in an interactive manner, so that the parameters can be easily input, and a reference sound pressure level can be set in advance. It is possible to determine whether or not the sound pressure level of an arbitrary area in the room model matches the reference sound pressure level, and the result of the determination can be output. The site environment can be easily evaluated.

In the method for simulating a sound field by an interactive method according to the present invention, the output step may include a step of setting a suitable area in the room-shaped model that matches the predetermined reference value. A configuration is provided in which the data is output separately from non-conforming areas that do not conform to the reference value.

According to this configuration, the output unit can output the respective areas in the room-shaped model while distinguishing the analysis result between the conforming area of the reference sound pressure level and the non-conforming area of the reference sound pressure level. The sound field environment related to the sound pressure distribution in the indoor space can be easily evaluated.

Further, in the method of the present invention for simulating a sound field in an interactive manner, a changing step of changing at least one of the room model and the speaker information set in the setting step, Based on the input information obtained, a change result calculation step of analyzing the sound pressure distribution in the room model,
A comparison step of comparing a result obtained by the analysis step with a result obtained by the change result calculation step.

According to this configuration, when a part of the input information is changed in the constructed room shape model and the set speaker information and the sound pressure distribution is analyzed again, the re-analysis can be easily performed. And the results of the analysis can be compared.

Also, in the method of the present invention for simulating a sound field in an interactive manner, the comparing step may use the same room shape as a result obtained by the analyzing step and a result obtained by the change result calculating step. It is configured to output using a model.

With this configuration, the analysis results before and after the change of the input information can be output using the same room-shaped model, and the analysis results before and after the change can be compared. The results can be evaluated.

In the method for simulating a sound field in an interactive manner according to the present invention, the room-type model includes information on a sound absorption coefficient of the indoor wall surface.

With this configuration, in the indoor space, not only the analysis of the direct sound but also the analysis of the sound pressure distribution including the indirect sound can be performed.

The method of simulating a sound field by the interactive method according to the present invention is a method of simulating a sound field in an arbitrary room by setting parameters by the interactive method. An input step of inputting information of a speaker disposed in the room including data of a sound absorption coefficient of the indoor wall surface and at least an arrangement position, a directional characteristic, a swing angle, and an input power amount; and the information input by the input step A setting step of setting the speaker information in the room model based on the room model based on the room model and the speaker information set in the setting step. At least the sound pressure level of the direct sound and the indirect sound at a predetermined point of With analyzing the arrival time to the serial point, an analysis step of determining whether the point match the reference value preset the direct sound and the sound pressure level difference and time difference of arrival of the indirect sound,
And an output step of outputting a result obtained by the analysis step.

With this configuration, parameters such as room shape and speaker information can be input in an interactive manner, so that the parameters can be easily input, and the sound pressure level difference between direct sound and indirect sound and the It is possible to set a reference value of the arrival time difference, determine whether or not an analysis value at an arbitrary point in the room model matches the reference value, and output the determination result. The sound field environment for the direct sound and the indirect sound in the space can be easily evaluated.

Also, in the method of the present invention for simulating a sound field by an interactive method, the output step may include the step of determining the sound pressure level and arrival time of the direct sound and the indirect sound at the point which does not conform to the reference value. Is output.

With this configuration, it is possible to output information on the sound pressure level and the arrival time of the direct sound and the indirect sound at the point that does not conform to the reference value, so that the sound relating to the characteristics of the direct sound and the indirect sound in the indoor space can be easily obtained. It is possible to evaluate the place environment.

Further, in the method of the present invention for simulating a sound field in an interactive manner, the output step outputs the arrival path of the direct sound and the indirect sound using the room model. Have.

With this configuration, the arrival path of the direct sound and the indirect sound at an arbitrary point can be output using the room model, so that the characteristics of the direct sound and the indirect sound in the sound field environment of the indoor space can be easily obtained. Can be evaluated.

Further, in the method of the present invention for simulating a sound field in an interactive manner, a changing step of changing at least one of the room model and the speaker information set in the setting step, and a changing step of the changing step. The change result calculating step of analyzing at least the sound pressure level and the arrival time of the direct sound and the indirect sound of the point based on the input information thus obtained; and the result obtained by the analyzing step and the change result calculating step. And a comparing step of comparing with the obtained result.

According to this configuration, when a part of the input information is changed in the constructed room shape model and the set speaker information, and the direct sound and the indirect sound are analyzed again, the re-analysis is easily performed. And the results of the analysis can be compared.

Further, in the method of the present invention for simulating a sound field in an interactive manner, the comparing step may include the step of comparing the analysis result before the change of the input information and the analysis result after the change of the input information with the same room shape. It is configured to output using a model.

According to this configuration, the analysis results before and after the change of the input information can be output using the same room-shaped model, and the analysis results before and after the change can be compared. The results can be evaluated.

Further, the recording medium readable by the central processing unit which records the program for simulating the sound field in the interactive format of the present invention sets the parameters in the interactive format and simulates the sound field in an arbitrary room. Information on a speaker disposed in the room, including data on the shape of the room and at least the arrangement position, directional characteristics, swing angle, and input power amount in the interactive format on a recording medium readable by a central processing unit that records a program. An input step of inputting the information, and a setting step of setting the speaker information in the room model while constructing the room model based on the information input in the input step. Sound based on the room model and the speaker information. Analyzing the distribution, an analysis step of determining whether or not any area in the room-shaped model conforms to a preset reference value, and an output step of outputting a result obtained by the analysis step Is included.

With this configuration, parameters such as room shape and speaker information can be input in an interactive manner, so that the parameters can be easily input, and a reference sound pressure level is set in advance. It is possible to determine whether or not the sound pressure level of an arbitrary area in the room model matches the reference sound pressure level, and the result of the determination can be output. The site environment can be easily evaluated.

Also, the recording medium is readable by a central processing unit that has recorded a program for simulating a sound field in an interactive manner according to the present invention. And a non-conforming area that does not conform to the preset reference value is output.

According to this configuration, the output means can output the respective areas in the room-shaped model while distinguishing the analysis result between the conforming area of the reference sound pressure level and the non-conforming area of the reference sound pressure level. The sound field environment related to the sound pressure distribution in the indoor space can be easily evaluated.

Further, the recording medium readable by the central processing unit which records the program for simulating the sound field by the interactive method of the present invention stores at least one of the room type model and the speaker information set in the setting step. A changing step of changing the sound pressure distribution in the room-shaped model based on the input information changed by the changing step; and a result obtained by the analyzing step and the change. And a comparing step of comparing the result obtained by the result calculating step.

According to this configuration, when a part of the input information is changed in the constructed room shape model and the set speaker information, and the sound pressure distribution is analyzed again, the re-analysis can be easily performed. And the results of the analysis can be compared.

Also, the central processing unit which has recorded the program for simulating the sound field in an interactive manner according to the present invention is readable by a central processing unit, wherein the comparing step comprises the step of comparing the result obtained by the analyzing step with the calculation of the change result. The configuration is such that the results obtained by the steps are output using the same room-shaped model.

With this configuration, the analysis results before and after the change of the input information can be output using the same room model, and the analysis results before and after the change can be compared, so that the analysis can be easily performed. The results can be evaluated.

Further, the recording medium readable by a central processing unit which records a program for simulating a sound field in an interactive manner according to the present invention has a structure in which the room-type model includes information on the sound absorption coefficient of the indoor wall surface. Have.

According to this configuration, in the indoor space, not only the analysis of the direct sound but also the analysis of the sound pressure distribution including the indirect sound can be performed.

Further, the recording medium readable by the central processing unit storing the program for simulating the sound field in the interactive format of the present invention sets the parameters in the interactive format and simulates the sound field in an arbitrary room. In a recording medium readable by a central processing unit that has recorded a program, the shape of the room, the sound absorption coefficient of the indoor wall surface and at least the arrangement position, the directivity,
An input step of inputting information of a speaker arranged in the room including data of a swing angle and an input electric energy, and, based on each of the information input by the input step, constructing the room model, A setting step of setting speaker information in the room model; and at least a sound of a direct sound and an indirect sound at a predetermined point in the room model based on the room model and the speaker information set by the setting step. Analyzing the pressure level and the arrival time from the speaker to the point, and determining whether or not the point conforms to a preset sound pressure level difference between the direct sound and the indirect sound and a reference value of the arrival time difference. An analyzing step of determining, and an outputting step of outputting a result obtained by the analyzing step It has a configuration that includes.

With this configuration, parameters such as room shape and speaker information can be input in an interactive manner, so that the parameters can be easily input, and the sound pressure level difference between the direct sound and the indirect sound and the It is possible to set a reference value of the arrival time difference, determine whether or not an analysis value at an arbitrary point in the room model matches the reference value, and output the determination result. The sound field environment for the direct sound and the indirect sound in the space can be easily evaluated.

Further, the recording medium which can be read by a central processing unit which has recorded a program for simulating a sound field in an interactive manner according to the present invention, wherein the output step is such that the direct step of the point not conforming to the reference value is performed. It has a configuration to output information on sound and sound pressure level and arrival time of the indirect sound.

According to this structure, the output step outputs the arrival route of the direct sound and the indirect sound using the room model.

Further, the recording medium readable by a central processing unit which records a program for simulating a sound field in an interactive manner according to the present invention, wherein the output step comprises: It has a configuration to output a sound arrival path.

With this configuration, the arrival path of the direct sound and the indirect sound at an arbitrary point can be output using the room model, so that the sound field environment relating to the characteristics of the direct sound and the indirect sound in the indoor space can be easily set. Can be evaluated.

Further, the recording medium readable by the central processing unit which records the program for simulating the sound field by the interactive method according to the present invention stores at least one of the room type model and the speaker information set in the setting step. A changing step of changing, and a change result calculating step of analyzing at least a sound pressure level and an arrival time of the direct sound and the indirect sound of the point based on the input information changed by the changing step,
A comparison step of comparing a result obtained by the analysis step with a result obtained by the change result calculation step.

According to this configuration, when a part of the input information is changed in the constructed room shape model and the set speaker information, and the direct sound and the indirect sound are analyzed again, the re-analysis is easily performed. And the results of the analysis can be compared.

Also, the central processing unit which has recorded the program for simulating the sound field by the interactive method according to the present invention is readable by a central processing unit. Is output by using the same room-shaped model.

With this configuration, the analysis results before and after the change of the input information can be output using the same room shape model, and the analysis results before and after the change can be compared, so that the analysis can be easily performed. The results can be evaluated.

Further, the interactive sound field simulation apparatus of the present invention is an interactive sound field simulation apparatus for setting parameters in an interactive manner and analyzing a sound field in an arbitrary room. Input means for inputting at least information on a speaker disposed in the room including data of the arrangement position, directional characteristics, swing angle and input electric energy, and room conditions including at least any of reverberation time and average sound absorption coefficient in the room; Based on the information input by the input unit, the room model is constructed, and the speaker information is set in the room model. Selecting means for selecting any of the data and the room condition data, and the data selected by the selecting means and the It has a configuration comprising analyzing means for analyzing the sound field of the chamber shape model based on the speaker information set by a constant section.

With this configuration, when performing a sound field analysis in an arbitrary room, if the reverberation time in the room or the average sound absorption coefficient is known in advance, the sound field analysis can be performed based on this value. It is not necessary to input the shape of the shape model three-dimensionally, and sound field analysis can be performed as long as the floor shape is input at least. As a result, input of parameters can be simplified.

When the parameters of the room model are input, when the material of each wall is input, the reverberation time or the average sound absorption coefficient is calculated by the built room model, and the sound is calculated based on this value. It is possible to select whether to perform a field analysis or a sound field analysis based on a known reverberation time or an average sound absorption coefficient.

The method of the present invention for simulating a sound field in an interactive manner is a method for simulating a sound field in an arbitrary room by setting parameters in the interactive manner. An input step of inputting room information including at least an arrangement position, directional characteristics, information on a speaker disposed in the room including data of a swing angle and input electric energy, and at least one of a reverberation time and an average sound absorption coefficient in the room. A setting step of constructing the room model based on the information input in the input step, and setting the speaker information in the room model, and calculating from the constructed room model. A selection step of selecting any of the data and the room condition data; and a data selected by the selection step. It has a configuration comprising an analysis step of analyzing the sound field of the chamber shape model based on the speaker information set by data and said setting step.

With this configuration, when performing a sound field analysis in an arbitrary room, if the reverberation time in the room or the average sound absorption coefficient is known in advance, the sound field analysis can be performed based on this value. It is not necessary to input the shape of the shape model three-dimensionally, and sound field analysis can be performed as long as the floor shape is input at least. As a result, input of parameters can be simplified.

When the parameters of the room type model are input, when the material of each wall is input, the reverberation time or the average sound absorption coefficient is calculated by the built room type model, and the sound is calculated based on this value. It is possible to select whether to perform a field analysis or a sound field analysis based on a known reverberation time or an average sound absorption coefficient.

The recording medium readable by the central processing unit which records the program for simulating the sound field in the interactive format according to the present invention sets parameters in the interactive format and simulates the sound field in an arbitrary room. Information on a speaker disposed in the room, including data on the shape, at least the arrangement position, the directional characteristics, the swing angle, and the amount of input power of the room in the interactive format on a recording medium readable by the central processing unit on which the program is recorded. An input step of inputting room conditions including at least one of a reverberation time and an average sound absorption coefficient in the room, and constructing the room model based on the information input in the input step, and A setting step of setting information in the room model, and calculating from the constructed room model Selecting one of the data and the room condition data, and analyzing the sound field of the room model based on the data selected by the selection step and the speaker information set by the setting step. .

With this configuration, when performing a sound field analysis in an arbitrary room, if the reverberation time in the room or the average sound absorption coefficient is known in advance, the sound field analysis can be performed based on this value. It is not necessary to input the shape of the shape model three-dimensionally, and sound field analysis can be performed as long as the floor shape is input at least. As a result, input of parameters can be simplified.

When the parameters of the room model are input, when the material of each wall is input, the reverberation time or the average sound absorption coefficient is calculated by the constructed room model, and the sound is calculated based on the values. It is possible to select whether to perform a field analysis or a sound field analysis based on a known reverberation time or an average sound absorption coefficient.

Further, the interactive sound field simulation apparatus of the present invention is an interactive sound field simulation apparatus for setting parameters in an interactive manner and analyzing a sound field in an arbitrary room. Input means for inputting information of a speaker disposed in the room including at least the arrangement position, directional characteristics, swing angle and data of input electric energy, and storage means for storing the speaker information input by the input means, Setting means for constructing the room model based on the information input by the input means and setting the speaker information in the room model; and the room model set by the setting means And analyzing means for analyzing a sound field of the room-shaped model based on the speaker information, When a plurality of different speaker information are set, the reference speaker information input by the input means is stored in the storage means, and when the arrangement position of the input speaker information is designated, the speaker information is stored in the storage means. The speaker information is read and set.

With this configuration, when a plurality of pieces of speaker information that differ only in the arrangement position are input, the speaker information can be input by inputting only the arrangement position without inputting the speaker information. Has become. As a result, input of parameters can be simplified.

The method of simulating a sound field by the interactive method according to the present invention is a method of simulating a sound field in an arbitrary room by setting parameters in the interactive form. An input step of inputting information of a speaker disposed in the room, including at least an arrangement position, a directional characteristic, a swing angle, and data of an input power amount; and, based on the information input in the input step, the room shape. A setting step of constructing a model and setting the speaker information in the room model, and analyzing the sound field of the room model based on the room model and the speaker information set in the setting step. And setting a plurality of pieces of speaker information that differ only in the arrangement position. A speaker input step of inputting the speaker information serving as a reference, a storage step of storing the speaker information input in the speaker input step in a storage unit, and specifying an arrangement position of the speaker information, A reading step of reading the speaker information stored in the storage means, wherein the setting step sets the read speaker information to the specified arrangement position.

With this configuration, when a plurality of pieces of speaker information differing only in the arrangement position are input, the speaker information can be input by inputting only the arrangement position without inputting the speaker information. Has become. As a result, input of parameters can be simplified.

A recording medium readable by a central processing unit which records a program for simulating a sound field in an interactive manner according to the present invention sets parameters in an interactive manner and simulates an arbitrary indoor sound field. In a method for setting parameters in an interactive manner on a recording medium readable by a central processing unit having recorded a program and simulating a sound field in an arbitrary room, the shape and at least the arrangement position and orientation of the room by the interactive manner An input step of inputting information of a speaker disposed in the room including data of characteristics, a swing angle, and an input electric energy; and constructing the room shape model based on the information input in the input step. Setting the speaker information in the room model, and setting the speaker information. Analyzing the sound field of the room-shaped model based on the room-shaped model and the speaker information set by the above, and when the plurality of speaker information different only in the arrangement position is set, the inputting step is performed. When a speaker input step of inputting the speaker information serving as a reference, a storage step of storing the speaker information input in the speaker input step in storage means, and an arrangement position of the speaker information is designated,
A reading step of reading the speaker information stored in the storage means, wherein the setting step sets the read speaker information to the specified arrangement position.

With this configuration, when a plurality of pieces of speaker information differing only in the arrangement position are input, the speaker information can be input by inputting only the arrangement position without inputting the speaker information. Has become. As a result, input of parameters can be simplified.

The interactive sound field simulation apparatus according to the present invention is an interactive sound field simulation apparatus for setting parameters in an interactive manner and analyzing a sound field in an arbitrary room. Input means for inputting information of a speaker disposed in the room, including data of a sound absorption coefficient of the indoor wall surface and data of at least an arrangement position, a directional characteristic, a swing angle, and an input electric energy; and the information inputted by the input means Setting means for constructing the room-shaped model based on the above, and setting the speaker information in the room-shaped model; and listening sound in the speaker based on the room-shaped model and the speaker information set by the setting means. Analysis means for analyzing an area in the room-shaped model in which at least intelligibility and sound quality satisfy a predetermined value; It has a configuration and output means for outputting the result of the analysis by said analyzing means.

With this configuration, parameters such as room shape and speaker information can be input in an interactive manner, so that the parameters can be easily input, and the sound received by the speakers has high clarity and high clarity. Calculating a cover area of the speaker set in the indoor space by setting a predetermined value so as to obtain sound quality, that is, an area in the indoor space where an arbitrary loudspeaker sound is easily heard when an arbitrary loudspeaker sound is output from the speaker. Since this analysis result can be output, the speaker set in the room shape and the room model can be easily evaluated.

Further, the interactive sound field simulation apparatus of the present invention has a database in which information on the speakers including at least the directional characteristics is recorded for each speaker, and the speaker arranged by the input means. Is selected, the setting means acquires information on the selected speaker from the database and sets the information.

With this configuration, when a speaker to be set in the room model is selected by the input unit, the setting unit can acquire the directional characteristics of the speaker from the database and set the directional characteristics of the speaker in the room model. Since this information can be set without inputting information on the directional characteristics of the speaker to be set, the input can be simplified.

Also, in the interactive sound field simulation apparatus of the present invention, at least one of the input information input by the input means is changed, and the analysis means changes the input information in the speaker based on the changed input information. While analyzing at least the area of the room-shaped model in which the clarity and the sound quality of the listening sound satisfy the predetermined value,
The apparatus is configured to compare the analysis result analyzed based on the changed input information with the analysis result before changing the input information.

With this configuration, when a part of the input information is changed in the constructed room shape model and the set speaker information, and the analysis of the speaker cover area in the room shape model is performed again, it is easily re-used. The analysis can be performed, and the analyzed results can be compared.

Further, in the interactive sound field simulation apparatus according to the present invention, the output means uses the same room-shaped model for the analysis result before the change of the input information and the analysis result after the change of the input information. Output.

With this configuration, the analysis results before and after the change of the input information can be output using the same room model, and the analysis results before and after the change can be compared, so that the analysis can be easily performed. The results can be evaluated.

The method for simulating a sound field by the interactive method according to the present invention is a method for simulating a sound field in an arbitrary room by setting parameters in the interactive form. An input step of inputting information of a speaker disposed in the room including data of a sound absorption coefficient of the indoor wall surface and at least an arrangement position, a directional characteristic, a swing angle, and an input power amount; and the information input by the input step A setting step of constructing the room model based on the above, and setting the speaker information in the room model; and a listening sound in the speaker based on the room model and the speaker information set by the setting step. Analyzing an area in the room-shaped model in which at least the intelligibility and the sound quality satisfy predetermined values. It has a analysis step, a configuration that includes an output step of outputting a result obtained by said analysis step.

According to this configuration, parameters such as room shape and speaker information can be input in an interactive manner, so that the parameters can be easily input, and the sound received by the speakers has high clarity and high clarity. Calculating a cover area of the speaker set in the indoor space by setting a predetermined value so as to obtain sound quality, that is, an area in the indoor space where an arbitrary loudspeaker sound is easily heard when an arbitrary loudspeaker sound is output from the speaker. Since this analysis result can be output, the speaker set in the room shape and the room model can be easily evaluated.

The method of simulating a sound field by the interactive method according to the present invention includes a changing step of changing at least one of the room model and the speaker information set in the setting step, and a changing step of changing the speaker information. A change result calculating step of analyzing an area in the room-shaped model in which at least the intelligibility and the sound quality of the listening sound in the speaker satisfy the predetermined value based on the input information obtained, and a change result calculating step; A comparison step of comparing the obtained result with the result obtained by the change result calculation step.

According to this configuration, when a part of the input information is changed in the constructed room shape model and the set speaker information, and the analysis of the speaker cover area in the room shape model is performed again, it is easily re-used. The analysis can be performed, and the analyzed results can be compared.

Also, in the method of the present invention for simulating a sound field in an interactive manner, the comparing step may include the step of comparing the result obtained by the analyzing step and the result obtained by the change result calculating step with the same room shape. It is configured to output using a model.

With this configuration, the analysis results before and after the change of the input information can be output using the same room-shaped model, and the analysis results before and after the change can be compared. The results can be evaluated.

A recording medium readable by a central processing unit which records a program for simulating a sound field in the interactive format according to the present invention simulates a sound field in an arbitrary room by setting parameters in the interactive format. In a recording medium readable by a central processing unit that records a program, the interactive form includes data of the shape of the room, the sound absorption coefficient of the indoor wall surface and at least the arrangement position, the directional characteristics, the swing angle, and the input power amount. An input step of inputting information of a speaker disposed in a room, and a setting for constructing the room model based on the information input in the input step and setting the speaker information in the room model. And the speaker information based on the room model set in the setting step. An analysis step of analyzing an area in the room-shaped model in which at least the clarity and sound quality of the listening sound in the speaker satisfy predetermined values, and an output step of outputting a result obtained by the analysis step have.

With this configuration, parameters such as room shape and speaker information can be input in an interactive manner, so that the parameters can be easily input, and the sound received by the speakers has high clarity and high clarity. Calculating a cover area of the speaker set in the indoor space by setting a predetermined value so as to obtain sound quality, that is, an area in the indoor space where an arbitrary loudspeaker sound is easily heard when an arbitrary loudspeaker sound is output from the speaker. Since this analysis result can be output, the speaker set in the room shape and the room model can be easily evaluated.

Further, the recording medium readable by the central processing unit which records the program for simulating the sound field by the interactive method of the present invention stores at least one of the room type model and the speaker information set in the setting step. And changing the area of the room-shaped model in which at least the clarity and the sound quality of the listening sound in the speaker satisfy the predetermined value based on the input information changed by the changing step. And a comparison step of comparing the result obtained by the analysis step with the result obtained by the change result calculation step.

With this configuration, when a part of the input information is changed in the constructed room shape model and the set speaker information, and the analysis of the speaker cover area in the room shape model is performed again, it is easily re-used. The analysis can be performed, and the analyzed results can be compared.

Also, the recording medium in which the program for simulating the sound field in the interactive format according to the present invention is readable by the central processing unit, the comparing step includes the step of comparing the result obtained by the analyzing step and the step of calculating the change result. The configuration is such that the results obtained by the steps are output using the same room-shaped model.

With this configuration, the analysis results before and after the change of the input information can be output using the same room shape model, and the analysis results before and after the change can be compared, so that the analysis can be easily performed. The results can be evaluated.

[0105]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 23 are diagrams showing an embodiment of an interactive sound field simulation apparatus, a method of simulating a sound field by an interactive method, and a recording medium in which the program is recorded according to the present invention.

First, the configuration will be described.

In the interactive sound field simulation apparatus 100 shown in FIG. 1, parameters are input in an interactive manner, and based on the input parameters, a room space shape model (hereinafter, referred to as a room shape model) is used as a computer. In addition, the information of the speakers arranged in the room space is set, and the sound field analysis is performed on the information of the constructed room model and the information of the speakers arranged.

This interactive sound field simulation apparatus 100
Is an input unit 10 for inputting parameters as shown in FIG.
1 and a database 1 that stores speaker information in advance
02, a display unit 103 for displaying a parameter input instruction and an analysis result, and a central processing unit 104 for performing a sound field analysis while constructing a room model and setting a speaker based on the input parameters, A recording medium 105 in which an operation program of the central processing unit 104 is recorded. The input unit 101 and the display unit 103 constitute an input unit and an output unit according to the present invention, respectively.

The input section 101 is constituted by input devices such as a keyboard and a mouse, and inputs parameter information specified by the display section 103.

The parameters input by the input unit 101 include the shape data of the room model, the wall material of the room model, information on the room model (hereinafter referred to as room conditions),
There are a temperature, a humidity, a type of a speaker arranged in the room, an arrangement position, an arrangement angle (hereinafter, referred to as a swing angle), and a level of an input power amount (hereinafter, an input level).
1 means that the central processing unit 104
Output.

Note that the shape data of the room model is CAD
(Computer-aided design) such as computer-aided design.
The room conditions indicate a room volume, a room surface area, a room constant, an average sound absorption coefficient, and a reverberation time.

The database 102 stores information on a plurality of speakers (hereinafter, referred to as speaker information) and information on wall materials (hereinafter, referred to as wall material information). The speaker information stores directional characteristic data for each speaker, and the wall material information stores sound absorption coefficient data for each material. The directional characteristic data of the speaker information is three-dimensional directional characteristic data, and stores data of horizontal directional characteristics and vertical directional characteristics.

When an arbitrary speaker is selected by the input unit 101, the database 102 searches the speaker information stored in the database of the designated speaker via the central processing unit 104, and also searches the central processing unit. 104
The information of the loudspeaker specified in is read out. Similarly, when an arbitrary wall material is selected by the input unit 101, the wall material information of the specified material is searched, and the information of the specified wall material is sent to the central processing unit 10.
4 is read.

Note that the wall material information and the speaker information stored in the database 102 can be set and registered such as addition and deletion.

The display unit 103 is constituted by a display, and displays an instruction for inputting a parameter and also displays an analysis result of the sound field analysis.

The central processing unit 104 is mainly composed of a microprocessor and a memory. The central processing unit 104 constructs a room model based on the parameters input from the input unit 101, and also, based on the input parameters, from the database 102 The speaker information and the wall material information are read out, and each data is set in the constructed room model. When the central processing unit 104 operates by reading a program from the recording medium 105, the central processing unit 104 stores necessary data such as an analysis result therein. The central processing unit 104 constitutes a setting unit, an analysis unit, and a storage unit according to the present invention.

When performing each sound field analysis operation, the central processing unit 104 sets the room type model and the speaker information based on the control program stored in the recording medium 105, and displays the information on the display unit 103. An input instruction is displayed to input necessary parameters when setting the room model and the speaker information. This input display is displayed for each parameter or each parameter type. It has become. Therefore, the user can input a parameter from the input unit 101 while checking this display.

For example, the central processing unit 104 causes the display unit 103 to display a window screen for inputting parameters. This window screen is displayed for each parameter type, specifically, for the room shape. , Wall materials and room conditions, speaker information, and sound field analysis setting categories.

On the window screen for each category,
An input position of each parameter or a value for calculating the parameter, or an input position for selecting and inputting the parameter is preset, and when the user inputs necessary values to these positions by the input unit 101, the central processing is performed. Part 104
Obtains each parameter.

Further, the central processing unit 104 can input each parameter one by one.

In this case, the central processing unit 104 first causes the display unit 103 to display a window screen for allowing the user to input parameters, and then, the user who has viewed the data displayed on the display unit 103 performs the input unit 101 When the parameter instructed from is input, this input parameter is obtained, a room-shaped model is constructed, or a speaker is set, and finally, the input data is displayed on the display unit 103, Instructions for the next parameter to input,
Alternatively, a display indicating that parameter input has been
103 is displayed.

As described above, the central processing unit 104 controls the display unit 101 to construct a room model, such as a room shape, a floor shape, and a height, as described above. When setting the necessary parameters for each wall material of the room model, for each parameter of the wall material of the ceiling, side walls and floor, when setting the speaker, the speaker type, arrangement position, swing angle, and input Each parameter of the power level is obtained.

When the wall material is set, if the data of the room conditions such as the room volume, the surface area, the average sound absorption coefficient, the room constant and the reverberation time are known, the central processing unit 104
These room condition data can be acquired by the input method as described above. Further, the central processing unit 104 can perform the sound field analysis by giving priority to the acquired room condition data over the parameter of the wall material set for each wall of the room model.

Further, as described above, the central processing unit 104
The sound field in the room model is analyzed based on the constructed room model and the speaker information set in the room model. In this sound field analysis, analysis of the sound pressure distribution of the room shape (hereinafter referred to as sound pressure characteristic analysis)
And analysis of sound pressure levels of direct sound and indirect sound at any point and arrival time from a speaker (hereinafter referred to as reflection characteristic analysis), and analysis of a speaker's cover area in a room shape (hereinafter referred to as cover area analysis) The central processing unit 104 displays these analysis results on the display unit 1.
Output to 03.

The sound pressure characteristic analysis means that a predetermined sound is loudspeaked from a speaker disposed in an arbitrary room, and the sound pressure level of the loudspeaked direct sound or the direct sound and the indirect sound in the room is measured. Distribution is calculated, and
In the reflection characteristic analysis, a predetermined sound is loudspeaked from a speaker arranged in an arbitrary indoor space, and the sound pressure level of a direct sound from the speaker and an indirect sound reflected by a wall surface at an arbitrary point, and each speaker Is the arrival time from the point to an arbitrary point. Further, the cover area analysis is to analyze an area in which a high-quality sound can be heard for each speaker set in an arbitrary indoor space. This is an analysis for evaluating the installation position.

Here, the cover area analysis will be described.

In the cover area analysis, in the indoor space of the room model, an area where the loud sound loudspeaked from each set speaker is easy to hear, that is, the clarity is high,
The purpose is to analyze an area in which a loud sound can be heard with high sound quality (hereinafter referred to as a listening area). Therefore, the coverage area of each speaker can be analyzed by calculating the clarity and sound quality of the listening sound at an arbitrary point in the indoor space.

For example, in the present embodiment, the following values are used as index values for sound quality and clarity.

As shown in FIG. 2, when a signal (white noise or pink noise) having a uniform characteristic over the entire frequency band is applied to the speaker at a constant input level (for example, 1 W), the speaker is turned on. , The frequency characteristic of the measured sound pressure level changes.

This is because the loudspeaker does not radiate sound uniformly in all directions but has an output performance (directivity) with respect to the angle from the front axis.
The front axis of the speaker is designed so that the sound pressure level of each frequency output from the speaker falls within a certain range,
The sound is best heard on the front axis of the speaker.

As shown in FIG. 3, the loudspeaker has an angle (hereinafter referred to as a directional angle) until the sound pressure level at a predetermined frequency on the front axis of the loudspeaker drops to a predetermined level (for example, 6 dB). Within the range, a difference in sound quality from the front axis of the loudspeaker is not perceived, and almost the same sound quality as the high sound quality portion on the front axis is maintained.

For this reason, the area on the extension of the directional angle range of the speaker shown in FIG. 4 has substantially the same sound quality as the high sound quality portion on the front axis. Is used as an index value of sound quality.

As the index value of the clarity, a value calculated by the following method is used.

In a case where a speaker is installed and loudspeaking is performed in an arbitrary indoor space, the sound pressure level at the listening point (SPL)
(Ideal state)) can be obtained by the following equation (Beranek's equation). SPL = PWL + ₁₀ log ₁₀ ((Q / 4πr ² ) + (4 (1-α) / Sα)) (1) where PWL is the sound power level (output level) of the speaker, and Q is the direction from the speaker to the listening point. , The directivity coefficient (coefficient indicating the output characteristic of each direction of the speaker), r is the distance from the speaker to the listening point, α is the average sound absorption coefficient of space,
Indicates the surface area of the space.

The left term in the parenthesis on the right side of the equation (1) represents the direct sound energy from the speaker, and the right term represents the reverberation sound (indirect sound energy) in an arbitrary room. (Reception sound) is expressed as the sum of the direct sound from the speaker and the indirect sound (reverberation sound). For this reason,
The intelligibility can be considered to depend on the magnitude relationship between the direct sound and the indirect sound. When the above equation is solved for the distance r with the left term = the right term, r = (１ ／) × ((QSα) / (Π (1−α))) ^1/2 (2)

The distance r represents the distance from the speaker at which the direct sound energy and the indirect sound energy from the speaker are equal (hereinafter referred to as the critical distance).

Therefore, as shown in FIG. 5, if the critical distance r becomes extremely large, it can be said that the indirect sound is larger than the direct sound and the intelligibility is reduced.
In the present embodiment, the distance at which the clarity is reduced is defined as three times the critical distance, and R = (3/4) sqrt ((QSα) / (π (1-α))) (3) This critical distance R is used as an index value of clarity.

As described above, in the present embodiment, in the area on the extension within the directional angle range of the speaker,
The coverage area is calculated by applying the equation (3). In addition, this cover area
As described above, the average sound absorption coefficient and surface area of the indoor space,
Since it can be calculated based on the directional characteristics and volume level of the speaker and the positional relationship between the speaker and the listening point in space, it is usually possible to use a value input by sound field analysis. I can do it.

Next, a method of analyzing the cover area will be described.

The cover area analysis method includes two methods: a target analysis surface discretization method and an algebraic analysis method.

In the target analysis surface discretization method, as shown in FIG. 6, a set of several points on the target analysis surface, that is, the analysis surface is discretized at regular intervals, and each discretization is performed. A method in which a representative point is set inside an element, and a critical distance R is calculated based on the directivity coefficient for the direction and the characteristics of the indoor space of the room model from the positional relationship between each point and the speaker. If the distance to the speaker is smaller than this calculated value, it is determined that the clarity is secured. If the distance to the speaker is large, it is determined that the clarity is not secured. Represents the sound field environment.

The algebraic analysis method, as shown in FIG.
This is a method in which a cover area is represented by a cut edge between a spherical cone having a vertex at the center of the speaker and an analysis surface on which a cover area analysis is performed. Assuming that the directivity coefficient of the speaker is constant up to an arbitrary angle, the critical distance R has a vertex at the center of the speaker, and the angle of this vertex can be represented by a spherical body having the angle of the directivity coefficient of the speaker. Therefore, if all of the analysis planes are covered by the area of the spherical body of the speaker set in the room model, the coverage area of each analysis plane can be represented.

By such a cover area analysis method, it is possible to determine a high-quality sound field environment in which each area of the indoor space has high clarity and no sound missing.

Next, the display of the result of the sound field analysis analyzed by the central processing unit 104 will be described.

When the sound pressure distribution analysis is performed, the central processing unit 10
4 is a display of an area for each sound pressure level on the analysis surface of the room model (hereinafter, referred to as contour display), as shown in FIG.
Alternatively, as shown in FIG. 9, a display of an area that conforms to a preset sound pressure level and an area that does not conform to a preset sound pressure level (hereinafter, referred to as a sound pressure distribution highlight display) are displayed on the analysis surface of the room model. Output to the unit 103.

FIGS. 8 and 9 show the analysis results of the analysis surface of an arbitrary room model displayed on the display unit 103.
8 and 9 show the sound pressure distribution analysis in a plan view of the chamber shape. 8 and 9 are analysis diagrams when a speaker is installed on the front.

Further, the sound pressure distribution highlight display shown in FIG. 9 is used to highlight an area that does not match when a preset sound pressure distribution deviation (hereinafter referred to as a reference value) is 85 dB to 95 dB. The reference value is a value stored in a program recorded in the recording medium 105 in advance, or a value set by the user before analysis.

In the case of the reflection characteristic analysis, the central processing unit 104
As shown in FIG. 10, the display of the sound pressure level of each of the direct sound and the indirect sound and the arrival time of each of the direct sound and the indirect sound output from the speaker at any point of the room model (hereinafter, referred to as pulse display) ) Or
As shown in FIG. 11, a pulse display (hereinafter, referred to as a reflection characteristic analysis highlight display) of a sound pressure level difference and an arrival time difference of a direct sound and an indirect sound that is assumed to be an acoustic obstacle is output to a display unit 103. I have.

FIGS. 10 and 11 show the analysis results of the reflection characteristics of a given point of an arbitrary room model displayed on the display unit 103. In both FIGS. 10 and 11, a speaker is installed in front. FIG. 7 is an analysis diagram in a case where the error occurs.

The reflection characteristic analysis highlight display shown in FIG. 11 indicates that a preset reference value is a sound pressure level difference of 4 dB.
FIG. 7 is a diagram showing highlighting of indirect sounds that did not match when the arrival time difference was set to 60 msec, together with the direct sound, and the preset sound pressure level difference and arrival time difference (hereinafter referred to as reference values) As in the case of the characteristic analysis, the value is a value stored in the program recorded in the recording medium 105 in advance, or a value set by the user before the analysis.

Further, in this reflection characteristic analysis highlight display, as shown in FIG. 12, an indirect sound that does not conform to the reference value is displayed on the room-type model as an arrival path from the speaker to a predetermined point (point A) (hereinafter, referred to as a point). , A highlight arrival route display) is also output to the display unit 103.

In the case of cover area analysis, the central processing unit 104
When the algebraic analysis method is performed, similar to the sound pressure characteristic analysis,
On the analysis surface of the room model, the display of the area conforming to the predetermined value and the area not conforming to the predetermined value are displayed on the display unit 103.
Output.

For example, in the algebraic analysis method, as shown in FIG. 7, the area included in the loudspeaker cover area on the analysis surface is displayed in solid blue.

When the target analysis surface discretization method is performed, the central processing unit 104 determines whether or not the points set by discretization at regular intervals conform to a predetermined value, as shown in FIG. The display is output to the display unit 103.

For example, in the object analysis surface discretization method, if each set point satisfies a predetermined calculation value, each point is displayed in blue (judgment to ensure clarity) and each set point is displayed. When the predetermined calculated value is not satisfied, it is displayed in red (determined that the clarity is insufficient).

The central processing unit 104 changes a part of the input parameters and re-performs the sound pressure distribution analysis, the reflection characteristic analysis, and the analysis of the cover area (hereinafter referred to as re-analysis). . In this case, the display unit 10 displays the analysis result before the parameter change and the analysis result after the parameter change.
3 is to be displayed in comparison.

The central processing unit 104, based on the parameters re-inputted by the input unit 101 and the parameters already input, outputs the room model and the speaker information to be arranged in the room model in the same manner as described above. After the setting, the sound pressure distribution analysis, the reflection characteristic analysis, and the cover area analysis are performed again.

When re-analysis is performed, the central processing unit 104 re-analyzes the analysis result (hereinafter referred to as an old result) before the parameter change and the parameter in the sound pressure distribution analysis as shown in FIG. The analysis result input and performed (hereinafter, referred to as a new result) is arranged and displayed on the display unit 103. As shown in FIG. 14, the difference value between the old result and the new result (the new result) is displayed. −old result) is superimposed on the display unit 103 (hereinafter, referred to as difference display).

By displaying the analysis result on the display unit 103 in this manner, the user can easily grasp the change in the sound pressure characteristic due to the parameter change.

Although the difference between the old result and the new result is displayed in FIG. 14, the analysis results are overlapped and displayed on the display unit 103 (hereinafter, referred to as overlap display). It may be.

In the reflection characteristic analysis and the cover area analysis, as in the sound pressure distribution analysis, the central processing unit 104 obtains a new result of the analysis result as shown in FIG. 6, FIG. 7, or FIG. 10, FIG. The old result is displayed side by side on the display unit 103, and is displayed in an overlapping manner.

Next, wall materials and room conditions set for the constructed room model will be described.

The wall material is set by displaying the room shape model and the wall material list stored in the database 102 on the display unit 103.

When the wall material is set for the room model,
The user selects one of the displayed wall surface material lists and directly designates the displayed wall surface of the room-shaped model by the input unit 101 such as a mouse.

For example, if the user sets the flooring to be flooring, the side wall to be concrete and the ceiling to be perforated,
The database 102 searches this input material and sets the corresponding wall material information on the specified wall surface.

When the room conditions are known, the room conditions can be directly input to the room model. In this case, the room reverberation time or average sound absorption coefficient, the room surface area, and the room volume calculated in advance are input, and this data (hereinafter, room condition data) is input.
, Sound field analysis can be performed. Therefore, without setting the wall material, or
At least, if only the floor shape is input, sound field analysis can be performed.

When both the setting of the wall material and the setting of the room condition are input, the central processing unit 104 causes the display unit 103 to display which parameter is to be selected, and the user displays this display. The input can be selected by the input unit 101 while watching, and the central processing unit 104 performs the sound field analysis based on the parameters selected by the user.

The recording medium 105 is, for example, a CD-ROM,
This is a recording medium such as an MO, a floppy (registered trademark) disk, and a hard disk, and stores a program for performing each operation of the sound field analysis and controlling each unit.

Further, the recording medium 105 includes a central processing unit 104
When an arbitrary operation is instructed to the central processing unit 104 by the input unit 101, the recording medium 105
A program recorded by a reader (not shown) is read, and a control program for controlling the operation is output to the central processing unit 104.

Next, the setting of the speaker information will be described.

The speaker information is set by displaying the room model and the speaker information stored in the database 102 on the display unit 103.

When speaker information is set in the room model, the user selects one of the displayed speaker lists, and inputs coordinates into the room model displayed by the input unit 101 such as a mouse and a numeric keypad. Alternatively, the position of the speaker is input by inputting the numerical values of the X-axis, Y-axis, and Z-axis coordinates. When a speaker is selected, the central processing unit 104 acquires the corresponding speaker information from the database 102, sets the speaker information in the room-shaped model constructed on the computer, and updates the information on the display unit 103. Is displayed.

Further, the speaker swing angle and the input level are input by the user after setting the speaker arrangement position, as described above, and the central processing unit 104 acquires the speaker swing angle and the input level. It has become.

When the speaker information having the same information is set in the room type model, the central processing unit 104 stores the information of the speakers to be arranged in the central processing unit 104 in advance, and the input unit 101 When the arrangement position is set by the user, the speaker information stored in the central processing unit 104 is read and the speaker information is set at the designated arrangement position.

The method of setting a plurality of speaker information which differs only in the arrangement position (hereinafter referred to as a speaker information copying method) is performed at the time of inputting the speaker information in the following manner.

FIG. 15 is a flowchart showing a method of copying speaker information.
Is controlled by a control program stored in the. Further, a room-shaped model is displayed on the display unit 103, and speaker information such as a reference speaker arrangement position, the directional characteristics, the swing angle, and the input power amount is
It is assumed that the room type model has already been set.

First, when an instruction to copy speaker information is input from the input unit 101, the central processing unit 104 reads out this operation program from the recording medium 105 and waits for input (step T1).

Next, when one loudspeaker serving as a reference set in the room model by the user is designated by the input unit 101 (the loudspeaker input step (step T
2)), the central processing unit 104 stores the designated speaker information, that is, the directional characteristics, the swing angle, and the input power amount of the speaker in the central processing unit 104, and determines the arrangement position where the speaker information is copied. Wait for input (storage step (step T3)).

Next, when the position of the speaker for copying the speaker information is input from the input unit 101 by the user (step T4), the central processing unit 104 reads the speaker information stored therein, Then, the read information is set to the input arrangement position (read step (step T5)).

As described above, in this embodiment, a plurality of speakers can be easily input and set.

As described above, when a speaker is arranged in the room model, one of the displayed speaker lists is selected and the input unit 101 such as a mouse and a numeric keypad is used. Coordinates are directly input to the displayed room-shaped model using a mouse or the like, or numerical values of X-axis, Y-axis, and Z-axis coordinates are input using a numeric keypad or the like.

In the case of inputting the arrangement position by inputting the numerical values of the X-axis, Y-axis, and Z-axis coordinates, by inputting the arrangement interval value and the number of copies, etc. A plurality of speaker information can be input at one time at intervals.

Further, the copying operation of the speaker information may be performed with reference to a speaker system constituted by a plurality of speakers.

Next, the analysis method of the sound field analysis will be described with reference to FIGS.

FIGS. 16 to 23 are flow charts showing the operation of this analysis method.
The control is performed by a control program stored in 5.

First, when the user inputs an instruction to start an analysis operation using the input unit 101 (step S1), the central processing unit 104 displays the input instruction of each parameter of the room model as described above on the display unit 103. And waits for an input (step S2).

Next, when each parameter of the room-shaped model is input from the input unit 101 by the user (input step (step S3)), the central processing unit 104 constructs the room-shaped model on the computer. (Setting step (step S4)).

[0189] Next, the central processing unit 104 displays an instruction to designate a material for each wall surface of the constructed room model on the display unit 103.
And displays the constructed room model and the wall material list previously stored in the database 102, and waits for an input (step S5).

Next, when the wall material for each wall is input from the input unit 101 by the user (input step (step S6)), the central processing unit 104 acquires the sound absorption coefficient of each specified material from the database 102. (Step S7).

Next, the central processing unit 104 displays an instruction for determining whether or not to input the room condition data, and makes this determination based on the input from the user (step S).
8). If the input of the room condition data is not instructed, the process directly proceeds to step S10. If the input of the room condition data is instructed, the central processing unit 104 instructs the input of the room condition data. Data is input (input step (step S9)).

Next, when performing the sound field analysis, the central processing unit 104 instructs the display unit 10 to input a priority condition as to whether to give priority to the room condition data input from the constructed room shape model.
3 and makes this determination based on the user's input (selection step (step S10)). When the priority condition is input, the central processing unit 104 sets the operation setting at the time of the sound field analysis to the room condition data priority based on the wall surface material information set in steps S6 and S7 (step S1).
1).

Next, the central processing unit 104 causes the display unit 103 to display an instruction for inputting the temperature and the humidity, and waits for the input (step S12). When the user inputs the temperature and humidity from the input unit 101 (step S13), the central processing unit 104 sets this information in the room model (step S14).

Next, similarly, the central processing unit 104 causes the display unit 103 to display an instruction for inputting speaker information, and also displays the constructed room model and the speaker list stored in the database 102 to input the information. Wait (step S15).

Next, as described above, when the user inputs speaker information such as speaker type and arrangement position from the input unit 101 (input step (step S16)), the database 102 stores the input speaker information. The speaker information stored in the database 102 based on the information, specifically, the directional characteristic data of the selected speaker is output to the central processing unit 104, and the central processing unit 1
In step 04, the speaker information is set in the constructed room model based on the speaker information input by the input unit 101 and the speaker information acquired by the database 102 (setting step (step S17)).

Next, the central processing unit 104 displays an instruction to determine an analysis item, and makes this determination based on an input from the user (step S18). By causing the user to select the analysis item, the central processing unit 104 determines sound pressure characteristic analysis, reflection characteristic analysis, or cover area analysis. To perform the sound pressure characteristic analysis, go to step S19; to perform the reflection characteristic analysis, go to step S19.
Go to 41. When performing the cover area analysis, the process proceeds to step S71. (Sound pressure characteristic analysis)

First, the central processing unit 104 causes the display unit 103 to display an instruction for setting and inputting a parameter (hereinafter, referred to as an analysis parameter) for performing the analysis of the sound pressure characteristic analysis, and waits for the input (step S19). . This analysis parameter is selected from analysis of only direct sound or analysis of direct sound and indirect sound, setting of the height from the floor surface at the time of analysis, direction of the room shape for displaying the analysis result, and preset. It is a parameter for selecting whether to evaluate by a reference value or to input a reference value set by a user,
When the user inputs a reference value, the user inputs the reference value.

The setting of each analysis parameter can be changed after the analysis result is output.

Next, when an analysis parameter is input from the input unit 101 by the user, the central processing unit 104 sets the input analysis parameter (step S20).

Next, the central processing unit 104 performs sound pressure characteristic analysis (analysis step (step S21)), and determines whether or not the result of the analysis conforms to the reference value (step S22). When the analysis result conforms to the reference value, the central processing unit 104 causes the display unit 103 to display the fact that the analysis result conforms, and causes the contour line shown in FIG. 8 to be displayed (output step (step S23)). ), And go to step S26.
When the analysis result does not conform to the reference value, the central processing unit 104 displays the analysis result indicating that the reference value is not satisfied, and displays an instruction to determine whether or not to perform highlight display. This determination is made based on the parameters input from the input unit 101 (step S2).
Four). At this time, contour lines shown in FIG. 8 may be displayed. If no highlight display is performed, step S
26, when the highlight display is to be performed, the highlight display shown in FIG. 9 is performed (output step (step S2
5)), go to step S26.

Finally, the central processing unit 104 causes the display unit 103 to display an input instruction as to whether or not to perform the re-analysis operation, and determines whether or not to perform the re-analysis operation based on the user's input (step S101). S26). When reanalysis is not performed, the central processing unit 104 ends the analysis operation, and when performing reanalysis, the central processing unit 104 stores the analyzed result inside the central processing unit 104 and starts the reanalysis operation. Yes (Step S2
7).

Note that the analyzed result need not be stored in the central processing unit 104. In this case, step S26
At this time, the central processing unit 104 determines whether to store the analysis result based on the user's input.

The re-analysis of the sound pressure characteristic will be described below.

First, when the start of the re-analysis operation is instructed (step S27), the central processing unit 104 causes the display unit 103 to display an instruction for re-input of the parameter, and waits for the input (step S28).

Next, when the user selects a parameter to be re-input from the input unit 101 and re-inputs a parameter value to the input unit 101 (change step (step S29)), the central processing unit 104 The values of the re-input parameters are changed to reconstruct the room model or reset the speaker information (change step (step S30)).

Then, the central processing unit 104 re-analyzes the sound pressure characteristics (step S3 for calculating a change result).
1)), it is determined whether or not the analysis result conforms to the reference value (step S32). When the analysis result conforms to the reference value, the central processing unit 104 causes the display unit 103 to display that the analysis result conforms, and causes the contour line shown in FIG. 8 to be displayed (step S33). If the analysis result does not conform to the reference value, a message indicating that the reference value is not satisfied is displayed in the analysis result (step S34). At this time, similarly to step S33, the contour lines shown in FIG. 8 may be displayed.

Next, the central processing unit 104 causes the display unit 103 to display an instruction to determine whether or not to compare the reanalysis result obtained by the reanalysis with the previous analysis result. Is performed (step S35). At this time, the analysis results are displayed side by side, difference display and overlap display are selected. When the comparison display is performed, the re-analysis result and the previous analysis result are displayed on the display unit 103 (comparison step (step S36)). When the comparison display is not performed, the process directly proceeds to step S37.

[0208] In step S36, when the display is compared, the display method can be switched based on the input by the user.

[0209] Finally, the central processing unit 104 causes the display unit 103 to display an input instruction as to whether or not to perform the re-analysis operation, and makes this determination based on the user's input (step S3).
7). If re-analysis is not performed, terminate the analysis operation,
When performing the re-analysis, the analysis result is stored in the central processing unit 104 (step S38), and the process proceeds to step S24.

The analyzed result need not be stored in the central processing unit 104, and the analyzed result may be updated. Further, the analysis result may be stored separately from other results. In this case, at the time of step S38, the display unit 10
3 displays overwrite save, separate save, and discard of the analysis result, and allows the user to select any of these. (In case of reflection characteristic analysis)

First, the central processing unit 104 causes the display unit 103 to display an instruction to input the setting of the analysis parameter for the reflection characteristic analysis, and waits for the input (step S41). Whether the analysis parameters are evaluated based on the height setting from the floor surface at the time of analysis, the direction of the room shape for displaying the analysis result and a preset reference value, or whether to input a reference value set by the user When the user inputs a reference value, the user inputs the reference value.

The setting of each analysis parameter can be changed even after the analysis result is output. Also,
In the reflection analysis, only an arbitrary point may be analyzed, or a plurality of appropriate points may be selected, and the reflection characteristic analysis may be performed for each point. When a plurality of points are selected, a reflection characteristic analysis is performed for each point.

Next, when an analysis parameter is input from the input unit 101 by the user, the central processing unit 104 sets the input analysis parameter (step S42).

Next, the central processing unit 104 performs a reflection characteristic analysis (analysis step (step S43)), and determines whether or not the analysis result conforms to the reference value (step S44). If the analysis result matches the reference value, the central processing unit 104 causes the display unit 103 to display that the analysis result matches, and causes the pulse display shown in FIG. 10 to be displayed (output step (step S45)). ), Go to step S48.
When the analysis result does not conform to the reference value, the central processing unit 104 displays the analysis result indicating that the reference value is not satisfied, and displays an instruction to determine whether or not to perform highlight display. This determination is made based on the parameters input from the input unit 101 (step S4).
6). At this time, the display section 103 may display a pulse as shown in FIG. If you do n’t want to highlight,
When the process proceeds to step S48 and the highlight display is performed, the display mode of the highlight display is selected, and FIG.
Or the highlight display of FIGS. 11 and 12 is performed simultaneously (output step (step S47)), and the process goes to step S48.

Finally, the central processing unit 104 causes the display unit 103 to display an input instruction as to whether or not to perform the re-analysis operation, and determines whether or not to perform the re-analysis operation based on the user's input (step S48). ). When not performing the re-analysis, the central processing unit 104 ends the analysis operation, and when performing the re-analysis,
The central processing unit 104 stores the analyzed result in the central processing unit 104 and starts re-analysis (step S49).

Note that the analyzed result need not be stored in the central processing unit 104. In this case, step S48
At this time, the central processing unit 104 determines whether to store the analysis result based on the user's input.

The re-analysis operation of the reflection characteristic analysis will be described below.

First, when an instruction to start a re-analysis operation is issued (step S49), the central processing unit 104 causes the display unit 103 to display an instruction for re-input of parameters, and waits for input (step S50).

Next, a parameter to be re-input is selected by the user, and the value of the parameter is input to the input unit.
When re-entered in 101 (change step (step S5
1)), the central processing unit 104 changes the values to the re-input parameters and reconstructs the room model or resets the speaker information (change step (step S52)).

Next, the central processing unit 104 re-analyzes the reflection characteristic (step S5 for calculating a change result).
3)), it is determined whether or not the analysis result conforms to the reference value (step S54). When the analysis result conforms to the reference value, the central processing unit 104 causes the display unit 103 to display that the analysis result conforms, and causes the pulse display shown in FIG. 10 to be displayed (step S55). If the analysis result does not conform to the reference value, a message indicating that the reference value is not satisfied is displayed in the analysis result (step S56). At this time, as in step S55, the pulse display shown in FIG. 10 may be displayed on the display unit 103.

Next, the central processing unit 104 causes the display unit 103 to display a determination instruction as to whether or not to compare the re-analysis result obtained by the re-analysis with the previous analysis result. Is performed (step S57). At this time, the analysis results are displayed side by side, difference display and overlap display are selected. When performing the comparison display, the re-analysis result and the previous analysis result are displayed on the display unit 103 (comparison step (step S58)), and when not performing the comparison display, the process directly proceeds to step S59.

[0222] When the comparison display is performed in step S58, the display method can be switched based on the user's input.

Finally, the central processing unit 104 causes the display unit 103 to display an input instruction as to whether or not to perform a re-analysis operation, and makes this determination based on the user's input (step S5).
9). If re-analysis is not performed, terminate the analysis operation,
When performing the re-analysis, the analysis result is stored in the central processing unit 104 (step S60), and the process goes to step S50.

Note that the analyzed result need not be stored in the central processing unit 104, and the analyzed result may be updated. Further, the analysis result may be stored separately from other results. In this case, at the time of step S60, the display unit 10
3 displays overwrite save, separate save, and discard of the analysis result, and allows the user to select one of them. (In case of cover area analysis)

First, the central processing unit 104 causes the display unit 103 to display an instruction for setting and inputting analysis parameters for the cover area analysis, and waits for the input (step S71). The analysis parameters include the setting of the height from the floor at the time of analysis, the direction of the room shape for displaying the analysis result, and the selection of the cover area analysis method (from either the target analysis surface discretization method or the algebraic analysis method). Is a parameter for performing the selection.

The setting of the analysis parameters can be changed even after the output of the analysis result.

Next, when the analysis parameters are input from the input unit 101 by the user, the central processing unit 104 sets the input analysis parameters (step S72).

Next, the central processing unit 104 performs the above-described cover area analysis (analysis step (step S7
3)) The result (cover area of each speaker on the analysis surface) is displayed on the display unit 103 (output step (step S74)). At this time, when all the analysis surfaces are included in the cover area, the display unit 103 indicates that the analysis result is good.
May be displayed.

Finally, the central processing unit 104 causes the display unit 103 to display an input instruction as to whether or not to perform the re-analysis operation, and determines whether or not to perform the re-analysis operation based on the user's input (step S101). S75). When reanalysis is not performed, the central processing unit 104 ends the analysis operation, and when performing reanalysis, the central processing unit 104 stores the analyzed result inside the central processing unit 104 and starts the reanalysis operation. Yes (Step S7
6).

[0230] The analyzed result need not be stored in the central processing unit 104. In this case, step S75
At this time, the central processing unit 104 determines whether to store the analysis result based on the user's input.

The re-analysis operation of the cover area analysis will be described below.

First, when an instruction to start the re-analysis operation is issued (step S76), the central processing unit 104 causes the display unit 103 to display an instruction for re-inputting parameters, and waits for input (step S77).

Next, a parameter to be re-input is selected by the user, and the value of the parameter is entered in the input section.
When it is re-input to 101 (change step (step S7
8)), the central processing unit 104 changes the values to the re-input parameters and reconstructs the room model or resets the speaker information (change step (step S79)).

Next, the central processing unit 104 re-analyzes the cover area analysis (change result calculation step (step S80)), and displays the result (the cover area of each speaker on the analysis surface) on the display unit 103 (step S80). Output step (step S81). At this time, similarly to step S74, when the entire analysis surface is included in the cover area, a message indicating that the analysis result is good may be displayed on the display unit 103.

Next, the central processing unit 104 causes the display unit 103 to display a determination instruction as to whether or not to compare the re-analysis result obtained by the re-analysis with the previous analysis result. Is performed (step S82). At this time, the analysis results are displayed side by side, difference display and overlap display are selected. When the comparison display is performed, the re-analysis result and the previous analysis result are displayed on the display unit 103 (comparison step (step S83)). When the comparison display is not performed, the process directly proceeds to step S84.

In step S83, when the display is compared, the display method can be switched based on the user's input.

Finally, the central processing unit 104 causes the display unit 103 to display an input instruction as to whether or not to perform the re-analysis operation, and makes this determination based on the user's input (step S8).
Four). If re-analysis is not performed, terminate the analysis operation,
When performing the re-analysis, the analysis result is stored in the central processing unit 104 (step S85), and the process proceeds to step S77.

The analyzed result need not be stored in the central processing unit 104, and the analyzed result may be updated. Further, the analysis result may be stored separately from other results. In this case, at the time of step S84, the display unit 10
3 displays overwrite save, separate save, and discard of the analysis result, and allows the user to select any of these.

As described above, according to the present embodiment, since each parameter can be input in an interactive manner, each parameter can be easily input, and the sound pressure distribution and the direct sound and It is possible to set a reference value for the sound pressure level difference and the arrival time difference of the indirect sound, and determine whether or not the reference value is satisfied.

In the sound pressure distribution analysis, the area where the analysis result conforms to the reference value and the area which does not conform to the reference value can be visually displayed by highlighting. In the reflection characteristic analysis, the area conforming to the reference value can be displayed. Since the sound pressure level and the arrival time and the arrival route of the direct sound and the indirect sound at the point not to be made can be visually displayed, the result of the sound field analysis in the room-shaped sound field environment can be easily evaluated. .

Furthermore, since the cover area analysis can be performed, a high-quality sound field environment can be easily analyzed, and the room model and the speakers set in the room model can be evaluated.

Further, by changing the input parameters such as the wall material of the room model, the arrangement position and the swing angle of the speaker, the sound pressure characteristic analysis, the reflection characteristic analysis and the cover area analysis can be performed again. Analysis results before and after parameter change can be displayed side-by-side, difference value display, and overlap display on the same room model, making it easy to compare analysis results before and after input information change can do.

As a result, sound pressure characteristic analysis, reflection characteristic analysis, and cover area analysis in various sound field environments can be easily performed, and sound pressure characteristics, reflection characteristics, and room model in various sound field environments can be easily analyzed. Can be compared with each other.

When a plurality of pieces of speaker information differing only in the arrangement position are input, the speaker information can be input by inputting only the arrangement position without inputting the speaker information. When loudspeaker information that differs only in the installation position is input, the number of input parameters is reduced, and the sound field analysis can be easily performed.

When the parameters of the room model are input, when the material of each wall is input, the reverberation time or the average sound absorption coefficient is calculated by the built room model, and the sound is calculated based on the values. It is possible to select whether to perform a field analysis or a sound field analysis based on a known reverberation time or an average sound absorption coefficient.

When each sound field analysis is performed, if the reverberation time in the room or the average sound absorption coefficient is known in advance, this value can be input, and the sound field analysis can be performed based on this value. Therefore, there is no need to input the shape of the room model three-dimensionally, and a sound field analysis can be performed by inputting at least a floor shape. As a result, the number of input parameters is reduced, and the sound field analysis can be easily performed.

In this embodiment, the analysis result is displayed on the display unit.
Although displayed on the display 103, the result of the sound field analysis may be output by a printing device such as a printer.

In this case, a predetermined format for printing out in advance is incorporated in each sound field analysis program.
After the sound field analysis, the central processing unit 104 performs the following operation interactively in the same manner as described above, and outputs the input parameters and the analysis data in a predetermined format.

For example, the central processing unit 104 sets items to be printed and output of input parameters such as speaker information, wall material information, and room conditions (hereinafter, referred to as output settings), and sets a room type model in which speakers are provided. The display area, the room-shaped model display settings such as the scale, and the data settings of the analysis data when comparing a plurality of analysis results are displayed on the display unit 103. When the user performs each setting from the input unit 101, the setting information Is displayed on the display unit 103, and the setting information is applied to a predetermined format and output to the printing device.

As a method of inputting the setting information,
As described above, the central processing unit 104 prompts the user for input by displaying window screens for inputting parameters for performing output setting on the display unit 103 one by one or for each category,
When the user inputs necessary values at these positions by the input unit 101, the window screen is displayed to confirm the settings at the time of output, such as the display area of the room model, the parameter selection area, and input of the next parameter. A screen is displayed or an end of parameter setting is displayed so that output setting can be easily performed.

By performing the printing output as described above,
Analysis data in various room shapes, speaker information, and input parameters can be easily output to the printing device in a fixed format. Also, by changing input parameters and analysis data applied to the format, various analysis results can be easily printed out.

Further, the analysis result may be stored in the database 102 instead of the printout.

In the present embodiment, when reanalysis is performed in sound pressure characteristic analysis and reflection characteristic analysis, it is determined whether or not the analysis result conforms to the reference value (step S32). , S54), without performing this determination, and after performing reanalysis, it may be determined whether or not to proceed to the comparison step (steps S35, S57).

[0254]

As described above, the interactive sound field simulation apparatus according to the present invention can input each parameter to be input when analyzing the room model and the speaker information in an interactive manner, and can set the sound pressure in advance. Since the reference values of the distribution and the sound pressure level difference between the direct sound and the indirect sound and the arrival time difference can be set and it can be determined whether or not the reference values are satisfied, parameters can be easily input. At the same time, the analysis result in a room-shaped sound field environment can be easily evaluated.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a sound field simulation device according to the present invention.

2A is a frequency characteristic graph of a signal applied to a speaker, FIG. 2B is a frequency characteristic graph of a loud sound at a point shifted from the front axis of the speaker by θ, and FIG. 2C is a frequency characteristic of the speaker Diagram for explaining

FIG. 3 is a diagram for explaining a directivity angle of a speaker;

FIG. 4 is a diagram for explaining an extended area of a directional angle range of a speaker;

FIG. 5 is a diagram for explaining a critical distance.

FIG. 6 is a diagram for explaining a target analysis surface discretization method in cover area analysis.

FIG. 7 is a diagram for explaining the number analysis method in the cover area analysis.

FIG. 8 is a diagram illustrating an example of contour display in sound pressure characteristic analysis according to an embodiment;

FIG. 9 is a diagram illustrating an example of a highlighted display of sound pressure characteristic analysis according to the embodiment.

FIG. 10 is a diagram illustrating an example of a pulse display of a reflection characteristic analysis according to an embodiment.

FIG. 11 is a diagram illustrating an example of a highlight display displayed by a pulse of the reflection characteristic analysis according to the embodiment.

FIG. 12 is a diagram illustrating an example of a highlight display displayed based on the arrival route of the reflection characteristic analysis according to the embodiment.

13A and 13B are diagrams illustrating an example of a re-analysis display of sound pressure characteristic analysis according to an embodiment. FIG. 13A illustrates an analysis result before parameter change, and FIG. 13B illustrates an analysis result after parameter change.

FIG. 14 is a diagram illustrating another example of the re-analysis display of the sound pressure characteristic analysis according to the embodiment.

FIG. 15 is a flowchart illustrating an operation of a speaker information copying method according to an embodiment.

FIG. 16 is a flowchart illustrating a sound field analysis operation according to an embodiment.

FIG. 17 is a flowchart illustrating an operation of sound field analysis subsequent to FIG. 16 in one embodiment.

FIG. 18 is a flowchart illustrating an operation of sound field analysis subsequent to FIG. 17 in one embodiment.

FIG. 19 is a flowchart illustrating an operation of sound field analysis subsequent to FIG. 18 in one embodiment.

FIG. 20 is a flowchart illustrating an operation of sound field analysis subsequent to FIG. 17 in one embodiment.

FIG. 21 is a flowchart illustrating an operation of sound field analysis subsequent to FIG. 20 in one embodiment.

FIG. 22 is a flowchart illustrating an operation of sound field analysis following FIG. 17 in one embodiment.

FIG. 23 is a flowchart illustrating an operation of sound field analysis subsequent to FIG. 22 in one embodiment.

[Explanation of symbols]

 100 sound field simulation device 101 input unit (input means) 102 database 103 display unit (output means) 104 central processing unit (setting means, analysis means, storage means) 105 recording medium Step T2 Speaker input step Step T3 Storage step Step T5 Read Step S3 Input Step Step S4 Setting Step Step S6 Input Step Step S7 Setting Step Step S9 Input Step Step S10 Selecting Step Step S16 Input Step Step S17 Setting Step Step S21 Analysis Step Step S22 Analysis Step Step S23 Output Step Step S25 Output Step Step S29 Change step Step S30 Change step Step S31 Change result calculation step Step S36 Comparison step Step S43 Analysis step Step Step S44 Analysis Step Step S45 Output Step Step S47 Output Step Step S51 Change Step Step S52 Change Step Step S53 Change Result Calculation Step Step S58 Comparison Step Step S73 Analysis Step Step S74 Output Step Step S78 Change Step Step S79 Change Step Step S80 Change Result Calculation step S83 Comparison step

Claims (48)

[Claims] 1. A method for setting parameters interactively,
An interactive sound field simulation apparatus for analyzing a sound field in an arbitrary room, comprising: a speaker arranged in the room including data of a shape and at least an arrangement position, a directional characteristic, a swing angle, and an input power amount of the room in the interactive form Input means for inputting the information of the above, the room type model is constructed based on each of the information inputted by the input means, setting means for setting the speaker information in the room type model, and the setting means Analyzing the sound pressure distribution in the room-shaped model based on the set room-shaped model and the speaker information, and determining whether an arbitrary area in the room-shaped model conforms to a preset reference value. An interactive sound field system comprising: analysis means for judging whether the sound field has been analyzed; and output means for outputting a result analyzed by the analysis means. Interview configuration devices. 2. A database in which information on the speakers including at least the directional characteristics is recorded for each speaker, and when the speaker to be disposed is selected by the input unit, the setting unit sets the 2. The interactive simulation apparatus according to claim 1, wherein information on the selected speaker is obtained from a database and set. 3. The apparatus according to claim 2, wherein the output unit distinguishes the inside of the room-shaped model into a conforming area conforming to the preset reference value and a non-conforming area not conforming to the preset standard value. 3. The interactive sound field simulation device according to claim 1, wherein the sound field simulation device outputs the sound. 4. The apparatus according to claim 1, wherein at least one of the input information input by the input unit is changed, and the analysis unit analyzes the sound pressure distribution in the room model again based on the changed input information. 4. The apparatus according to claim 1, wherein the analysis result analyzed based on the changed input information is compared with the analysis result before the input information is changed. Interactive sound field simulation device. 5. The method according to claim 1, wherein the output unit outputs the analysis result before the change of the input information and the analysis result after the change of the input information using the same room-shaped model. The interactive sound field simulation device according to claim 4. 6. The interactive sound field simulation apparatus according to claim 1, wherein the room-type model includes information on a sound absorption coefficient of the indoor wall surface. 7. Parameters are set interactively,
In an interactive sound field simulation apparatus that performs sound field analysis in an arbitrary room, the shape of the room is determined by the interactive form,
Input means for inputting information of a speaker disposed in the room, including data of a sound absorption coefficient of the indoor wall surface and data of at least an arrangement position, a directional characteristic, a swing angle, and an input electric energy; and the information inputted by the input means And a setting unit configured to set the speaker information in the room model based on the room model and the speaker model based on the room model and the speaker information set by the setting unit. Analyzing at least the sound pressure level of the direct sound and the indirect sound at a predetermined point and the arrival time from the speaker to the point, and the sound pressure level difference between the direct sound and the indirect sound where the point is set in advance, and Analysis means for determining whether or not a reference value of the arrival time difference is met; and analysis by the analysis means. Interactive sound field simulation apparatus characterized by comprising an output means for outputting a result. 8. A database in which information on the speakers including at least the directional characteristics is recorded for each of the speakers, and when the speaker to be arranged is selected by the input unit, the setting unit is configured to: 8. The interactive simulation apparatus according to claim 7, wherein information on the selected speaker is obtained from a database and set. 9. The apparatus according to claim 1, wherein said output means outputs information on sound pressure levels and arrival times of said direct sound and said indirect sound at said point which does not conform to said reference value. 9. The interactive sound field simulation apparatus according to 7 or 8. 10. The dialogue according to claim 7, wherein the output means outputs the arrival route of the direct sound and the indirect sound using the room model. Type sound field simulation device. 11. The apparatus according to claim 1, wherein at least one of the input information input by the input unit is changed, and the analyzing unit determines at least a sound pressure of the direct sound and the indirect sound of the point based on the changed input information. The level and the arrival time are analyzed, and the analysis result analyzed based on the changed input information is compared with the analysis result before the input information is changed. An interactive sound field simulation apparatus according to any one of claims 7 to 10. 12. The output means outputs the analysis result before the change of the input information and the analysis result after the change of the input information using the same room-shaped model. Item 14. The interactive sound field simulation device according to item 11. 13. A method for setting parameters in an interactive manner,
In a method for simulating a sound field in an arbitrary room, information of a speaker arranged in the room including data of a shape of the room and at least an arrangement position, a directional characteristic, a swing angle, and an input power amount is input by the interactive format. An inputting step, and a setting step of constructing the room-shaped model based on the respective information input by the inputting step, and setting the speaker information in the room-shaped model,
Analyzing the sound pressure distribution in the room-shaped model based on the room-shaped model and the speaker information set in the setting step, and any area in the room-shaped model conforms to a preset reference value. A method for simulating a sound field in an interactive manner, comprising: an analysis step of determining whether or not the sound field is performed, and an output step of outputting a result obtained by the analysis step. 14. The output step distinguishes the inside of the room-shaped model into a conforming area conforming to the preset reference value and a non-conforming area not conforming to the preset reference value. 14. The method according to claim 13, wherein the sound field is simulated by outputting the sound field. 15. A changing step of changing at least one of the room model and the speaker information set in the setting step, and a sound in the room model based on the input information changed in the changing step. 15. A change result calculating step of analyzing a pressure distribution, and a comparing step of comparing a result obtained by the analyzing step with a result obtained by the change result calculating step. The method of simulating the sound field by the interactive method described above. 16. The apparatus according to claim 1, wherein the comparing step outputs a result obtained by the analyzing step and a result obtained by the change result calculating step using the same room shape model. A method for simulating a sound field by the interactive method according to item 15. 17. The method according to claim 13, wherein the room model includes information on a sound absorption coefficient of the indoor wall surface. 18. A method for setting parameters interactively,
In a method for simulating a sound field in an arbitrary room, the interactive form includes a configuration of the room, a sound absorption coefficient of a wall surface of the room, and at least an arrangement position, a directional characteristic, a swing angle, and an input power amount. An input step of inputting information of a speaker to be installed, and a setting step of constructing the room-shaped model based on the information input in the input step and setting the speaker information in the room-shaped model; Analyzing at least the sound pressure level of the direct sound and the indirect sound at a predetermined point in the room model and the arrival time from the speaker to the point based on the room model and the speaker information set in the setting step. And the sound pressure level of the direct sound and the indirect sound at which the point is set in advance. A sound field simulated by an interactive method, comprising: an analysis step of determining whether or not a reference value of the difference between the arrival time and the arrival time difference is satisfied; and an output step of outputting a result obtained by the analysis step. How to 19. The information processing apparatus according to claim 19, wherein the output step outputs information on a sound pressure level and an arrival time of the direct sound and the indirect sound at the point that does not conform to the reference value. The method of simulating the sound field by the interactive method described in 18. 20. The interactive sound field according to claim 18 or 19, wherein the output step outputs the arrival path of the direct sound and the indirect sound using the room model. How to simulate. 21. A changing step of changing at least one of the room shape model and the speaker information set in the setting step, and the direct sound and the direct sound of the point based on the input information changed in the changing step. A change result calculating step of analyzing at least a sound pressure level and an arrival time of the indirect sound, and a comparing step of comparing a result obtained by the analyzing step with a result obtained by the change result calculating step. 21. A method for simulating a sound field by means of an interactive method according to any of claims 18 to 20. 22. The comparison step, wherein the analysis result before the change of the input information and the analysis result after the change of the input information are output using the same room shape model. A method for simulating a sound field by the interactive method according to item 21. 23. A method for setting parameters in an interactive manner,
In a recording medium readable by a central processing unit that has recorded a program for simulating a sound field in an arbitrary room,
An inputting step of inputting information of a speaker disposed in the room including data of a shape and at least an arrangement position, a directional characteristic, a swing angle and an input electric energy of the room by the interactive form; and A setting step of constructing the room-shaped model based on each piece of information and setting the speaker information in the room-shaped model; and setting the room-shaped model based on the room-shaped model and the speaker information set by the setting step. Analyzing the sound pressure distribution in the model, an analysis step of determining whether or not an arbitrary area in the room-shaped model conforms to a preset reference value, and analyzing the result obtained by the analysis step Recording a program for simulating a sound field in an interactive manner, comprising: CPU-readable recording medium. 24. The output step distinguishes the inside of the room-shaped model into a conforming area conforming to the preset reference value and a non-conforming area not conforming to the preset reference value. 24. A recording medium readable by a central processing unit recording a program for simulating a sound field in an interactive manner according to claim 23, wherein the recording medium is output. 25. A changing step of changing at least one of the room model and the speaker information set in the setting step, and a sound in the room model based on the input information changed in the changing step. 25. The method according to claim 23, further comprising: a change result calculating step of analyzing a pressure distribution; and a comparing step of comparing a result obtained by the analyzing step with a result obtained by the change result calculating step. A recording medium readable by a central processing unit that records a program for simulating a sound field in the interactive format described above. 26. The comparison step, wherein a result obtained by the analysis step and a result obtained by the change result calculation step are output using the same room-shaped model. Item 30. A recording medium readable by a central processing unit, which records a program for simulating a sound field by the interactive method according to Item 25. 27. A program for simulating a sound field by an interactive method according to claim 23, wherein the room-type model includes information on a sound absorption coefficient of the indoor wall surface. A recording medium that can be read by a central processing unit. 28. A method for setting parameters interactively,
In a recording medium readable by a central processing unit that has recorded a program for simulating a sound field in an arbitrary room,
An input step of inputting information of a speaker arranged in the room including data of a shape of the room, a sound absorption coefficient of the wall surface of the room, and at least an arrangement position, a directional characteristic, a swing angle, and an input power amount by the interactive form, The room-shaped model is constructed based on the information input in the input step, and a setting step of setting the speaker information in the room-shaped model; and the room-shaped model and the room set in the setting step. Based on the speaker information, at least the sound pressure level of the direct sound and the indirect sound at a predetermined point in the room-shaped model and the arrival time from the speaker to the point are analyzed, and the direct sound in which the point is preset is analyzed. And the reference values of the sound pressure level difference and the arrival time difference of the indirect sound A recording process readable by a central processing unit recording a program for simulating a sound field in an interactive manner, characterized by including an analysis step of determining whether the sound field is obtained and an output step of outputting a result obtained by the analysis step. Medium. 29. The apparatus according to claim 29, wherein the output step outputs information on sound pressure levels and arrival times of the direct sound and the indirect sound at the point that does not conform to the reference value. 28. A recording medium readable by a central processing unit in which a program for simulating a sound field in the interactive format according to 28 is recorded. 30. The interactive sound field according to claim 28, wherein the output step outputs the arrival path of the direct sound and the indirect sound using the room model. A recording medium readable by a central processing unit that has recorded a program for simulating the program. 31. A changing step of changing at least one of the room shape model and the speaker information set in the setting step, and the direct sound of the point based on the input information changed in the changing step. And a change result calculation step of analyzing at least a sound pressure level and an arrival time of the indirect sound, and a comparison step of comparing a result obtained by the analysis step with a result obtained by the change result calculation step. 31. A recording medium readable by a central processing unit recording a program for simulating a sound field in an interactive manner according to any one of claims 28 to 30. 32. The comparison step, wherein the analysis result before the change of the input information and the analysis result after the change of the input information are output using the same room-shaped model. Item 31. A recording medium readable by a central processing unit, which records a program for simulating a sound field by the interactive method according to Item 31. 33. Setting parameters in an interactive manner,
In an interactive sound field simulation apparatus that performs sound field analysis in an arbitrary room, the shape of the room is determined by the interactive form,
Input means for inputting at least information on a speaker disposed in the room including data of the arrangement position, directional characteristics, swing angle and input electric energy, and room conditions including at least any of reverberation time and average sound absorption coefficient in the room; Based on the information input by the input unit, the room model is constructed, and the speaker information is set in the room model. Selecting means for selecting any of data and the room condition data, and analyzing means for analyzing a sound field of the room type model based on the data selected by the selecting means and the speaker information set by the setting means. An interactive sound field simulation apparatus characterized by including: 34. Setting parameters interactively,
In a method of simulating a sound field in an arbitrary room, information of a speaker disposed in the room including data of a shape of the room, at least an arrangement position, a directional characteristic, a swing angle, and an amount of input power, and at least An input step of inputting room conditions including any of the room reverberation time and the average sound absorption coefficient, and, based on each of the information input by the input step, constructing the room model, and the speaker information A setting step of setting the room-shaped model; a selection step of selecting any of data calculated from the constructed room-shaped model and the room condition data; a data selected by the selection step and the setting step Analyzing the sound field of the room model based on the speaker information set by How to simulate the sound field by interactively, which comprises a. 35. A method of setting parameters in an interactive manner,
In a recording medium readable by a central processing unit that has recorded a program for simulating a sound field in an arbitrary room,
By the interactive form, the shape of the room, at least the arrangement position, the directional characteristics, the information of the speaker disposed in the room including the data of the swing angle and the input power amount and at least any one of the reverberation time and the average sound absorption coefficient in the room An input step of inputting room conditions including the information, and a setting step of setting the speaker information in the room model while constructing the room model based on the information input in the input step. A selection step of selecting any of the data calculated from the performed room shape model and the room condition data, and the room shape model based on the data selected in the selection step and the speaker information set in the setting step. Analyzing the sound field by analyzing the sound field in an interactive manner. CPU readable recording medium having recorded thereon a program for Yureto. 36. Setting parameters interactively,
An interactive sound field simulation apparatus for analyzing a sound field in an arbitrary room, comprising: a speaker arranged in the room including data of a shape of the room and at least an arrangement position, a directional characteristic, a swing angle, and an input power amount in the interactive form. Input means for inputting the information of the above, storage means for storing the speaker information input by the input means, and, based on each of the information input by the input means, to construct the room model, Setting means for setting speaker information in the room model; and analysis means for analyzing a sound field of the room model based on the room model and the speaker information set by the setting means. When a plurality of pieces of the speaker information that are different only in the installation position are set, the speaker information serving as a reference input by the input unit. The interactive type, wherein the speaker information is stored in the storage means, and when the arrangement position of the speaker information is designated by the input means, the speaker information stored in the storage means is read and set. Type sound field simulation device. 37. Setting parameters in an interactive manner,
In a method for simulating a sound field in an arbitrary room, information of a speaker arranged in the room including data of a shape of the room and at least an arrangement position, a directional characteristic, a swing angle, and an input power amount is input by the interactive format. Input step, and based on each of the information input in the input step, the room-shaped model is constructed, and the setting step of setting the speaker information in the room-shaped model, and the setting step is performed by the setting step. An analysis step of analyzing the sound field of the room-shaped model based on the room-shaped model and the speaker information, and when setting a plurality of the speaker information different only in the arrangement position, the input step includes a reference and A speaker input step of inputting the speaker information, and a speaker input step in the speaker input step. Storing the speaker information in a storage unit, and reading out the speaker information stored in the storage unit when an arrangement position of the speaker information is designated, wherein the setting step reads out the speaker information. A method for simulating a sound field in an interactive manner, wherein the speaker information is set at the specified arrangement position. 38. Setting parameters interactively,
In a recording medium readable by a central processing unit that has recorded a program for simulating a sound field in an arbitrary room,
An input step of inputting information of a speaker arranged in the room including data of the shape and at least the arrangement position of the room, a directional characteristic, a swing angle, and an input power amount by the interactive form; and Analyzing the sound field of the room model based on the room model and the speaker information, and setting a plurality of the speaker information different only in the arrangement position,
When the input step specifies a speaker input step of inputting the speaker information as a reference, a storage step of storing the speaker information input in the speaker input step in a storage unit, and a position at which the speaker information is arranged. Reading the speaker information stored in the storage means, wherein the setting step sets the read speaker information to the specified location. A recording medium readable by a central processing unit that records a program for simulating a sound field. 39. Setting parameters interactively,
In an interactive sound field simulation apparatus that performs sound field analysis in an arbitrary room, the shape of the room is determined by the interactive form,
Input means for inputting information of a speaker disposed in the room, including data of a sound absorption coefficient of the indoor wall surface and data of at least an arrangement position, a directional characteristic, a swing angle, and an input electric energy; and the information inputted by the input means Setting means for constructing the room-shaped model based on the above, and setting the speaker information in the room-shaped model; and listening sound in the speaker based on the room-shaped model and the speaker information set by the setting means. Analyzing means for analyzing an area in the room-shaped model in which at least intelligibility and sound quality satisfy a predetermined value; and output means for outputting a result analyzed by the analyzing means. Sound field simulation device. 40. A database in which information on the speakers including at least the directional characteristics is recorded for each speaker, and when the speaker to be arranged is selected by the input unit, the setting unit sets the 40. The interactive simulation apparatus according to claim 39, wherein information on the selected speaker is obtained from a database and set. 41. At least one of the input information input by the input unit is changed, and the analyzing unit changes at least the clarity and the sound quality of the sound received by the speaker based on the changed input information. While performing analysis of the area in the room-shaped model that satisfies the predetermined value, the analysis result analyzed based on the changed input information is compared with the analysis result before the input information is changed. 41. The interactive sound field simulation device according to claim 39, wherein: 42. The output means outputs the analysis result before the change of the input information and the analysis result after the change of the input information using the same room-shaped model. 42. The interactive sound field simulation device according to claim 41. 43. Setting parameters interactively,
In a method for simulating a sound field in an arbitrary room, the interactive form includes a configuration of the room, a sound absorption coefficient of a wall surface of the room, and at least an arrangement position, a directional characteristic, a swing angle, and an input power amount. An input step of inputting information of a speaker to be installed, and a setting step of constructing the room-shaped model based on the information input in the input step and setting the speaker information in the room-shaped model; An analyzing step of analyzing an area in the room-shaped model in which at least clarity and sound quality of the listening sound in the speaker satisfy a predetermined value based on the room-shaped model and the speaker information set by the setting step; And an output step of outputting a result obtained by the analysis step. How to simulate the sound field by interactive format that. 44. A changing step of changing at least one of the room shape model and the speaker information set in the setting step, and at least one of a listening sound in the speaker based on the input information changed in the changing step. A change result calculation step of analyzing an area in the room-shaped model in which the clarity and the sound quality satisfy the predetermined value; and a result obtained by the analysis step and a result obtained by the change result calculation step. 44. The method of simulating a sound field by the interactive method according to claim 43, further comprising a comparing step of comparing. 45. The comparison step, wherein a result obtained by the analysis step and a result obtained by the change result calculation step are output using the same room-shaped model. A method for simulating a sound field by the interactive method according to item 44. 46. Setting parameters interactively,
In a recording medium readable by a central processing unit that has recorded a program for simulating a sound field in an arbitrary room,
An input step of inputting information of a speaker arranged in the room including data of a shape of the room, a sound absorption coefficient of the indoor wall surface and at least an arrangement position, a directional characteristic, a swing angle and an input power amount by the interactive form; Based on each of the information input in the input step, while building the room model, a setting step of setting the speaker information in the room model, the room model and the room set in the setting step An analysis step of analyzing an area in the room-shaped model in which at least the clarity and sound quality of the listening sound in the speaker satisfy a predetermined value based on the speaker information; and an output step of outputting a result obtained by the analysis step. Record a program that simulates the sound field by means of an interactive method characterized by including CPU-readable recording medium. 47. A changing step of changing at least one of the room shape model and the speaker information set in the setting step, and at least one of a listening sound in the speaker based on the input information changed in the changing step. A change result calculation step of analyzing an area in the room-shaped model in which the clarity and the sound quality satisfy the predetermined value; and a result obtained by the analysis step and a result obtained by the change result calculation step. 47. The recording medium readable by a central processing unit recording a program for simulating a sound field in an interactive manner according to claim 46, comprising a comparing step of comparing 48. The method according to claim 48, wherein, in the comparing step, a result obtained in the analyzing step and a result obtained in the change result calculating step are output using the same room shape model. Item 47. A recording medium readable by a central processing unit, which stores a program for simulating a sound field by the interactive method according to Item 47.