JPH11167384A - Actual sound data generating device for sound shield performance evaluation, sound shield performance evaluating device, and information storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound shield evaluating device permitting to properly evaluate sound shielding of a sound shield member to an arbitrary sound source. SOLUTION: This device is a sound shield evaluating device generating actual sound data for evaluating sound shielding of an arbitrary sound isolating member to an arbitrary sound source. This device comprises a 1st memory 10 storing sound data of various sound sources, a 2nd memory storing data of impulse responses of various sound shielding members, and a sounding part 16 which reads the sound data of an arbitrary sound source and the impulse response data of an arbitrary sound shielding member from the 1st and 2nd memories, and creates an actual data by a convolution operation. And, actual sound data are outputted to an evaluator 300 from the loudspeaker 20R, 20L.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actual sound data generation device for evaluating sound insulation performance, a sound insulation performance evaluation device, and an information storage medium used for evaluating the sound insulation performance of a sound insulation member.

[0002]

BACKGROUND ART Problems to be solved by the invention
When designing a building, it is important to select an optimal sound insulation structure against noise in order to accurately respond to customer needs.

[0003] In particular, there are various kinds of noises described above depending on the environment around a building. For example, there are various types of noise, such as cars, trains, and aircraft, depending on the location of the building, and there is currently no noise source such as a road around the planned location of the building. Even in such a case, it is assumed that a large road will be opened after five years and ten years due to land planning and the like.

[0004] Therefore, in the design stage of a building, it is important to select an optimal sound insulation structure by assuming specific noise existing around the building and noise that may be generated in the future.

However, conventionally, when a sound insulation structure is selected, a numerical value of a calculation result based on sound insulation data in a laboratory is graphed, and the sound insulation performance (sound insulation effect) of the sound insulation member is used.
I was just evaluating.

Therefore, there is a problem that it is extremely difficult to select an optimum sound insulation member for various kinds of noise existing around the planned location of the building and noise that may be generated in the future. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a sound insulation performance evaluation real sound data generating apparatus capable of appropriately evaluating the sound insulation performance of a sound insulation member with respect to an arbitrary sound source. It is to provide a sound insulation performance evaluation device and an information storage medium.

[0008]

In order to achieve the above object, a real sound data generating apparatus for evaluating sound insulation performance according to the present invention comprises: a first storage means for storing sound data of various sound sources; The second storage means storing the data of the impulse response of the above, and the sound data of an arbitrary sound source and the data of the impulse response of the arbitrary sound insulating member are read out from the first and the second storage means, and convolution calculation is performed to obtain the actual sound. Actual sound data for sound insulation performance evaluation of an arbitrary sound insulating member with respect to an arbitrary sound source.

Further, the information storage medium of the invention of claim 7 is:
A computer-readable information storage medium storing information for generating actual sound data for sound insulation performance evaluation of an arbitrary sound insulation member for an arbitrary sound source, comprising: sound data of various sound sources; and impulse responses of various sound insulation members. It is characterized by including real data and real sound generation information for creating real sound data by performing convolution operation of sound data of an arbitrary sound source and data of an impulse response of an arbitrary sound insulating member.

According to the first and seventh aspects of the present invention, sound data of various sound sources and impulse response data of various sound insulating members are stored in advance. Then, by selecting an arbitrary sound source and a sound insulating member from these, the sound data of the sound source and the impulse response data of the sound insulating member are convoluted, whereby, when the sound insulating member is used for the sound source, Real sound data for sound insulation performance evaluation is generated.

[0011] Therefore, by reproducing and outputting the actual sound data using a sound output means or the like, the evaluator can determine what kind of sound insulation member is actually used for a desired sound source selected by the evaluator. It is possible to select an optimal sound insulation member for the sound source while listening in real time as to whether or not a sound can be heard.

In particular, sound data of a specific sound source corresponding to the location conditions of a structure or the like is appropriately selected from the sound data of the plurality of sound sources, and a sound insulating member having an optimum sound insulating performance for the selected sound source is selected. It becomes possible to select.

According to a second aspect of the present invention, there is provided a real sound data generating apparatus for evaluating sound insulation performance, comprising: first storage means for storing sound data of various sound sources; and an impulse when various sound insulation members are used for a given sound insulation structure. A second storage unit storing response data, and sound data of an arbitrary sound source and data of an impulse response of an arbitrary sound insulating member are read out from the first and second storage units, and convolution operation is performed to obtain actual sound data. And real sound data for evaluating sound insulation performance of an arbitrary sound insulation member for an arbitrary sound source. The information storage medium according to claim 8 is:
A computer-readable information storage medium in which information for generating actual sound data for sound insulation performance evaluation of an arbitrary sound insulation member for an arbitrary sound source is stored, and the sound data of various sound sources and a given sound insulation structure Includes impulse response data when various sound insulation members are used, and sound generation information for creating actual sound data by convoluting and calculating sound data of any sound source and impulse response data of any sound insulation member. It is characterized by the following.

[0014] The inventions of claims 2 and 8 are the first and seventh aspects of the present invention.
The same operation and effect as the invention described above can be obtained.

In particular, according to the second and eighth aspects of the present invention, impulse response data when various sound insulating members are used for a given sound insulating structure is used. For example, at the design stage,
After the basic design of the structure is completed, in the stage of evaluating what kind of sound insulating member is used for this structure, the relationship between the sound insulating member and the sound insulating structure is also an important element of sound insulating performance evaluation. Become.

Therefore, according to the present invention, impulse response data when various kinds of sound insulating members are actually used are measured and stored in advance in the sound insulating structure, and the impulse response data is stored in a sound source. Perform convolution operation with data. This makes it possible to evaluate the sound insulation performance when the sound insulation member to be evaluated is used for the actual sound insulation structure while listening as real sound in real time.

According to a third aspect of the present invention, in the second aspect, the second storage means stores, in a database for each sound insulation structure, impulse response data when various sound insulation members are used for different sound insulation structures. Wherein the actual sounding means reads out sound data of an arbitrary sound source and data of an impulse response of a sound insulating member of an arbitrary sound insulating structure from the first and second storing means, and performs a convolution operation. I do.

According to a ninth aspect of the present invention, in the ninth aspect, the data of the impulse response is such that the data of the impulse response when various sound insulating members are used is associated with each of the sound insulating structures for each different sound insulating structure. The actual sound generation information is created as data, and includes information for performing convolution operation on sound data of an arbitrary sound source and data of an impulse response of a sound insulating member of an arbitrary sound insulating structure.

According to the third and ninth aspects of the present invention, a data group of impulse responses when various sound insulating members are used for a given sound insulating structure is measured and stored for each of the various sound insulating structures. Therefore, an arbitrary sound insulation structure is selected from the plurality of sound insulation structures, and the sound insulation performance is evaluated for sound data of an arbitrary sound source when an arbitrary sound insulation member is used for the sound insulation structure. be able to. Thereby, it becomes possible to evaluate the sound insulation member more appropriately.

For example, it is assumed that two types of sound insulation structures having the same floor plan include a structure mainly using a reflective material inside the structure and a structure mainly using a sound absorbing material inside the structure. I do. Then, when selecting a sound insulating member to be used in the same place of the two types of structures, data of impulse responses when the various types of sound insulating members are used in the two types of structures are stored.

By doing so, for example, a sound insulating member most suitable for a sound insulating structure mainly using a reflective material such as a flooring in a room can be evaluated as a real sound, and a sound absorbing member such as a tatami mat can be indoors. It is possible to evaluate and select a sound insulation member optimal for a sound insulation structure mainly using the above sound insulation member as real sound in real time.

In particular, according to the present invention, depending on the type of noise existing around the location to be located, etc., among the various sound insulating structures, which sound insulating structure is optimal, and what kind of sound insulating structure It is possible to evaluate whether it is optimal to use the sound insulating member while listening and comparing in real time as a real sound.

Here, the sound insulation structure means a structure in which the sound insulation member is used, for example, a house and its room.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the actual sound generating means corrects a gain of the real sound data corresponding to a sound passing environment from the assumed sound source to the sound receiving point. Based on the data, the gain of the convoluted data is corrected to create actual sound data.

According to a tenth aspect, in any one of the seventh to ninth aspects, gain correction data for the actual sound data is calculated based on input data of a sound passing environment from the assumed sound source to a sound receiving point. The realization information includes information for correcting the gain of the convolution-calculated data based on the gain correction data to generate real sound data.

According to the fourth and tenth aspects of the present invention, real sound data can be reproduced in consideration of a sound passing environment from a sound source to a sound receiving point. It is possible to select and evaluate various sound insulating members.

For example, a sound source assumed as a noise source
When the distance to the sound receiving point is short and when the distance to the sound receiving point is long, the way of hearing the sound at the sound receiving point is different even when the same sound insulating member is used.

According to the present invention, since the actual sound data can be corrected in accordance with the sound passing environment from the sound source to the sound receiving point, the optimum sound insulating member can be obtained by considering the location conditions in more detail. Can be selected for evaluation.

Here, the sound passing environment means an environment including a distance of a sound passing path from a sound source to a sound receiving point, the path, and a sound attenuation element existing around the path.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, there is provided a selecting means for selecting an arbitrary sound source and an arbitrary sound insulating member, and the actual sound generating means is provided for the selected sound source and the sound insulating member. Data is read from the first and second storage means and the operation is performed.

According to a sixth aspect of the present invention, an apparatus for evaluating sound insulation performance includes the actual sound data generating apparatus for evaluating sound insulation performance according to any one of the first to fifth aspects, and audio output means for reproducing and outputting the actual sound data. Features.

[0032] According to an eleventh aspect of the present invention, in any one of the seventh to tenth aspects, the impulse response data includes a plurality of impulse response data obtained by changing the distance of the sound source to the same sound insulation structure. The real sound information includes information for creating the real sound data using impulse response data at an arbitrary distance.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the drawings.

First Embodiment FIG. 1 shows a preferred embodiment of a sound insulation performance evaluation apparatus to which the present invention is applied.

The sound insulation performance evaluation apparatus of the present embodiment includes a first memory 10 storing sound data of various sound sources, a second memory 12 storing impulse response data of various sound insulation members, and an arbitrary memory. Sound data of a sound source and impulse response data of an arbitrary sound insulating member are stored in each of the memories 1.
And a real sound generation unit 16 that creates real sound data by reading from 0 and 12 and performing a convolution operation.

The sound data of the arbitrary sound source and the impulse response data of the arbitrary sound insulating member are selected by the evaluator 300 operating the operation unit 14.

The sound data calculated by the sound generator 16 is converted by the sound reproducer 18 into actual sound signals of two channels on the left and right sides, and the sound is output from the speakers 10R and 10L to the evaluator 300.

Therefore, as shown in FIG. 5, sound data A, B, C... Of various noise sources are measured and stored in the first memory 10 in advance, and various data are stored in the second memory 12. Impulse response data a, b, c, d ...
By measuring and storing the
By selecting an arbitrary combination of a noise source and a sound insulation member using the operation unit 14, it is possible to hear in real time how much sound insulation performance the sound insulation member selected for the noise source has as actual sound. Can be evaluated. In particular, the operation of the operation unit 14 allows the sound insulation member 50 shown in FIG.
Since the sound insulation performance of each sound insulation member 50 can be evaluated as a real sound while listening and comparing in real time by appropriately selecting and switching the sound insulation member 50 of the structure at the design stage, it is necessary to evaluate and select the sound insulation member 50 of the structure in advance and appropriately. Can be.

In particular, according to the present embodiment, it is possible to select various noise sources and evaluate the sound insulation performance of the sound insulation member 50 for the noise sources. Therefore, for example, for a sound insulating member 50 such as a window sash or a wall panel used on the side of the structure facing the road, an automobile is selected as a noise source, and an appropriate sound insulating performance for the noise source is selected. Sound insulation member 5
A selection of 0 can be made.

For example, when selecting the sound insulation member 50 as a partition wall between rooms, a human voice or the like is selected as a noise source, and various partition walls are selected as the sound insulation member 50. . As a result,
The sound insulation performance of various partition walls can be evaluated in real time as a real sound, and an appropriate partition wall can be selected.

As described above, according to the present embodiment, the evaluator 300 operates the operation unit 14 to select an arbitrary combination of the sound source and the sound insulating member 50, so that the sound insulating member for the selected noise source can be selected. Since the sound insulation performance of the sound insulation member 50 can be evaluated in real time as a real sound, the sound insulation member 5 having an appropriate sound insulation ability with respect to a main noise source existing therearound.
0 can be reliably selected.

FIG. 2 shows an example of a system for measuring sound data of various sound sources stored in the first memory 10. As shown in the drawing, left and right two-channel microphones 30R and 30L are provided for a sound source to be measured.
Is set, and the actual sound of the sound source is
, Converted into a digital signal and stored in the digital tape recorder 34. Using this device, sound data of various sound sources that can be a noise source is stored as digital data in the tape recorder 34, and thereafter, the tape recorder 3
4 is written and stored in the first memory 10.

In this manner, the sound data A, B, C, D... Of various noise sources as shown in FIG. 5 can be written and stored in the first memory 10.

FIG. 3 shows a system for measuring impulse response data of various sound insulating members stored in the second memory 12. In this system, a sound insulation member 50 to be measured is interposed between a sound source room 42 and a sound receiving room 44 in an impulse response measurement room 40. Then, the speaker 52 is placed at a predetermined reference position in the sound source room 42 by the sound insulating member 5.
The microphone 56 is installed at the sound receiving point on the sound receiving room 44 side. In addition, a microphone 54 is installed on the sound source room 42 side as needed.

Then, the sound measurement system 58 generates an impulse sound as shown in FIG. 4A from the speaker 52 via the power amplifier 60. The impulse sound is measured via the microphones 56 and 54 and the two-channel sound pressure meter 62, and the sound receiving point, ie, the measured waveform obtained by the microphone 56 is written and stored in the recorder 64 as impulse response data. FIG.
(B) shows an example of the impulse response data obtained by the microphone 56 in this way.

In the measurement system, such impulse response data is measured for a plurality of different sound insulation members 50, and the measured impulse response data is stored in the recorder 64 in association with the sound insulation members. By doing so, the impulse response data a, b, c... Of the various sound insulating members shown in FIG. 5 can be stored in the recorder 64. Then, after the measurement is completed, the impulse response data of each sound insulating member written in the recorder 64 may be written and stored in the second memory 12. If necessary, a correction value for each frequency band of the impulse response data of each sound insulating member may be generated, and this correction value may be written and stored in the second memory 12 in association with each sound insulating member.

FIG. 8 shows an example of an impulse response database of a window sash, and FIG. 9 shows an example of an impulse response database of a wall. In the present embodiment, such an impulse response database is measured and written and stored in the second memory 12.

By doing so, the first memory 10 stores sound data of various noise sources as shown in FIG.
It will be stored as the source sound database 100.
Further, as shown in FIG. 6, impulse response databases 110 of various sound insulation members are written and stored in the second memory 12.

FIG. 7 shows an example of a noise evaluation operation using the sound insulation performance evaluation device of the present embodiment.

First, in step S10, the evaluator 3
In step 00, the user selects and inputs a combination of an arbitrary noise source and a sound insulation member to be evaluated as shown in FIG.

Thus, in step S12, the actual sound generation unit 16 reads out the sound data and the impulse response data of the selected noise source and sound insulation member, and obtains the data shown in FIG.
As shown in (1), the sound data 200 and the impulse response data 210 are convoluted to generate actual sound data 220. The correction value for each frequency band of the impulse response data of each sound insulating member is stored in the second memory 1.
2, the correction value is read out from the second memory 12 in association with each sound insulation member as necessary, and the convolution operation data is subjected to a correction process for each frequency band, so that the actual sound data 220 is stored. May be generated.

The actual sound data 220 obtained in this manner
Is the sound data actually heard at the sound receiving point when the sound data 200 of the sound source passes through the selected sound insulating member.

Then, the generated real sound data 220 is
The sound is output as a real sound to the evaluator 300 via the sound reproducing unit 18 and the speakers 20R and 20L, whereby the evaluator 300 can evaluate the sound insulation performance of the sound insulation member with respect to the sound source in real time.

The evaluator 300 repeats the operation of the example of steps S10 to S16 until a sound insulation member having an optimum sound insulation performance for a desired sound source is obtained.

In this way, when a window sash is used as a sound insulation member for an arbitrary noise source, the sound insulation performance of various types of sashes shown in FIG.
Evaluation can be performed sequentially according to the flow shown in FIG.
As a result, it is possible to evaluate in real time which window sash exhibits an appropriate sound insulation performance in consideration of cost for an arbitrary noise source as real sound data, and to select an optimum window sash.

Second Embodiment In the first embodiment, when the sound data of the selected noise source is output from the speaker 52 of the impulse response measurement room 40, the sound passing through the sound insulating member 50 is transmitted to the microphone 5
The case where the sound insulating member 50 is evaluated based on how it is heard at the sound receiving point where the 6 is installed has been described as an example.

On the other hand, the second embodiment is characterized in that the sound insulation member 50 can be evaluated in relation to the sound insulation structure in which the sound insulation member 50 is used.

For this purpose, in the present embodiment, in the impulse response measurement system shown in FIG. 3, the sound receiving chamber 44 is formed as a sound receiving chamber similar to the sound insulation structure to be evaluated, and The impulse response data at the sound receiving point is measured as in the embodiment.

As a result, it is possible to obtain impulse response data of various sound insulating members, reflecting the indoor state of the sound insulating structure.

FIGS. 10 and 11 show the case where the sound receiving room 44 is a reflective sound receiving room (a sound receiving room mainly using a reflective member such as a flooring as a room material), Each of the sound insulating members 5 (a sound receiving room mainly using a sound absorbing member such as a mat as a room material).
The measured value of the impulse response data of 0 is shown. Here, FIG. 10 shows impulse response data of various types of sashes as the sound insulating member 50, and FIG.
1 shows impulse response data when various types of sound insulation walls are used as the sound insulation member 50.

Even when the same sound insulating member 50 is used, the impulse response data differs between the reflective sound receiving chamber 44 and the sound absorbing chamber. This means that it is more appropriate to evaluate the sound insulation performance of the sound insulation member 50 in consideration of the characteristics of the sound receiving chamber 44 than to evaluate the sound insulation performance of the sound insulation member 50 alone. Means

For this purpose, in the present embodiment, the sound receiving room 44 shown in FIG. 3 is formed as a sound receiving room having the same layout and structure as the sound insulation structure to be evaluated.
4 is formed as a sound-absorbing sound receiving chamber, the impulse response data of the various sound insulating members 50 are measured as a first impulse database group, and the sound insulating when the sound receiving chamber 44 is formed as a reflective sound receiving chamber. Member 50
Is measured as a second impulse response database group, and the recorder 6
4 is stored. Then, each database measured in this way is written and stored in the second memory 12 shown in FIG.

Thus, the evaluator 300 first uses the operation unit 14 to select whether the sound receiving room to be evaluated is of the sound absorbing type or the reflective type, and then selects the sound receiving room. Selection of the sound insulation member 50 to be performed and the sound source
It may be performed in the same manner as in the embodiment.

Thus, the sound insulation performance in the state where the sound insulation member 50 is incorporated in the actual sound insulation structure can be favorably evaluated. In some cases, each sound insulation member 5
It is possible to simultaneously evaluate how the sound insulation performance of 0 changes, and select an optimum sound insulation member 50 for the sound insulation structure.

In this embodiment, the impulse response data groups of the two types of sound-absorbing and reflective sound-insulating structures are prepared. However, the present invention is not limited to this. Similarly, the impulse response data group of the sound insulation member 50 can be similarly written and stored in the second memory 12, and the combined evaluation of the sound insulation performance of the sound insulation structure itself and the sound insulation performance of both the sound insulation members 50 can be performed. .

In the above embodiments, the case where the selected noise source is set at the same position as the speaker 52 of the measurement room 40 has been described as an example. However, for example, in the measurement system shown in FIG. By changing the distance of the noise source (speaker 52) to the same sound insulating member 50, for example,
A configuration may be adopted in which impulse response data at a plurality of distances of m, 15 m,... is measured, and the measured data is stored in the second memory 12 in association with the sound insulation member 50 and the distance. Thus, by inputting the selection signal of the sound insulating member 50 and the distance from the operation unit 14, the actual sound generation unit 16 can read out the corresponding impulse response data from the second memory 12 and generate the actual sound data. As a result, it is possible to evaluate the sound insulation performance of the sound insulation member when the distance to the noise source is different.

Third Embodiment In the first and second embodiments, the selected noise source is
The case where the speaker 52 is set at the same position as the speaker 52 in the measurement room 40 has been described as an example.
The sound insulation performance of the sound insulation member 50 can be evaluated by changing the position of the noise source and the sound transmission route with respect to the noise.

That is, the position of the noise source with respect to the sound insulation structure is not always constant, but changes as needed depending on the location conditions.

For example, as shown in FIG. 12, when evaluating the sound insulation performance of a window sash used for a room on the second floor of a five-story apartment built adjacent to a road, the sound source 80 It is important what route the noise travels to reach the sound receiving point of the sound receiving chamber 44.

FIG. 13A shows a gain correction value for the convolution calculation data in consideration of what route the noise travels from the sound source 80 to reach the sound receiving point of the sound receiving room 44. An arithmetic expression is shown, and FIG. 13B shows values of various contents used in this expression.

The values of various contents shown in FIG. 13B are written and stored in the third memory 22 as calculation formulas or empirical values (actually measured values) for each condition.

In the present embodiment, in the apparatus shown in FIG. 1, the evaluator 300 first inputs the data of the sound passage environment from the sound source 80 to the sound insulation member and the structure to be evaluated using the operation unit 14. . More specifically, data is input about the route of noise transmitted from the sound source 80 to the sound receiving point. The input data is once written in the third memory 22, and the actual sound generation unit 16 uses the data to calculate the values of various contents shown in FIG. Remember and
Further, a gain correction value K is calculated from these values using the equation of FIG. 13A, and the gain correction data K is stored in the third memory 22.

With the above configuration, the first,
As in the second embodiment, when a desired combination of a desired noise and a sound insulating member is input using the operation unit 14, the actual sound generation unit 16 convolves the real sound data and calculates the real sound data in the same manner as in the above-described embodiments. Generate data. And the actual sound generator 1
6 reads out the gain correction data K from the third memory 22 and performs a correction process on the real sound data based on the correction data K;
8. Sound is output from the speakers 20R and 20L as actual sound data at a level that can be actually heard at the sound receiving point.

In this way, the distance of the noise source 80 from the sound insulation member of the structure to be evaluated and the various obstacles interposed between the noise source and the sound insulation member are determined. It is possible to evaluate the sound insulation performance of the sound insulation member and select an optimum sound insulation member in an environment close to the actual location conditions in consideration of the effects of the above.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

For example, as shown in FIG.
In which the data stored in the first, second and third memories is written.
In this configuration, information such as a program for operating as the above-described actual sound generation unit 16 is written, whereby the same operation and effect as those of the above-described embodiments can be achieved.

That is, the first to third memories 10 described above,
Information stored in the computer 12 and 22
By using, as an information storage medium readable by a computer 90, for example, a memory 92 in which information such as a program for operating as a sound generator is written, the same operation and effect as those of the above-described embodiments can be obtained. it can.

In each of the above embodiments, the sound reproducing unit 1
8 and a set of speakers 20 are used to evaluate the sound insulation performance of a noise source from a certain position direction. However, the present invention is not limited to this, and the sound insulation performance when a plurality of noise sources exist is described. Can be evaluated in a similar manner.

In this case, a plurality of sets of the sound reproducing unit 18 and the speakers 20 are provided, and each set of the speakers 20 is set in correspondence with a plurality of noise entry directions (for example, a front window and a side window are provided). By installing two sets of speakers), it is possible to satisfactorily evaluate a combination of a plurality of sound insulation members with respect to noise that enters simultaneously from a plurality of directions.

Further, for example, according to each of the above embodiments, it is possible to reproduce the actual situation and determine how much noise from the adjacent room is removed by environmental noise. For example, there is a case where a living sound in an adjacent room enters through a wall or the like as noise. Such noise is less noticeable in urban areas where environmental noise is large,
It is a big problem in the suburbs where environmental noise is small. Therefore,
By storing the sound data of the environmental noise in the first memory 10 in advance, it is possible to satisfactorily select an optimal sound insulation member for the environmental noise.

[0082]

[Brief description of the drawings]

FIG. 1 is a block diagram showing a preferred embodiment of a sound insulation performance evaluation device to which the present invention is applied.

FIG. 2 is an explanatory diagram of a system for measuring sound data of various sound sources.

FIG. 3 is an explanatory diagram of a system for measuring impulse response data for a sound insulating member.

FIG. 4 is an explanatory diagram showing a relationship between an original sound waveform used at the time of impulse response measurement and a waveform when the original sound waveform passes through a sound insulating member.

FIG. 5 is a principle explanatory diagram for creating actual sound data by an arbitrary combination of sound data of a plurality of sound sources and impulse response data of a plurality of sound insulating members.

FIG. 6 is a diagram illustrating the principle for creating convolution of sound data of a sound source and impulse response data to generate actual sound data.

FIG. 7 is an operation flowchart of the embodiment.

FIG. 8 is a diagram showing measurement results of impulse response data of various window sashes.

FIG. 9 is a diagram illustrating measurement results of impulse response data of various sound insulation walls.

FIG. 10 is a diagram showing measured values of impulse response data when various window sashes are used in a sound absorbing room and a reflective sound receiving room.

FIG. 11 is a diagram showing impulse response data obtained when various sound insulating walls are used in a sound absorbing room and a reflective sound insulating room.

FIG. 12 is an explanatory diagram illustrating an example of a case where a sound insulation member and a sound source are located at a distance from each other.

FIG. 13A shows an arithmetic expression for correcting the gain of real sound data corresponding to a sound passing environment from an assumed sound source to a sound receiving point. FIG. 4 is an explanatory diagram of values used in the operation formula of FIG.

FIG. 14 is an explanatory diagram of a system using a computer-readable information storage medium.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 1st memory 12 2nd memory 14 Operation part 16 Realization part 18 Sound reproduction part 20 Speaker 22 3rd memory

Claims (11)

[Claims] A first storage unit for storing sound data of various sound sources; a second storage unit for storing data of impulse responses of various sound insulation members; Actual sound data for reading sound impulse response data from the first and second storage means and performing convolution operation to generate real sound data; A real sound data generation device for sound insulation performance evaluation, characterized by generating a sound data. 2. A first storage means for storing sound data of various sound sources, a second storage means for storing data of an impulse response when various sound insulation members are used in a given sound insulation structure, Sound data generating means for reading sound data of a sound source and data of an impulse response of an arbitrary sound insulating member from the first and second storage means and performing convolution calculation to generate actual sound data. An actual sound data generator for evaluating sound insulation performance, which generates actual sound data for evaluating sound insulation performance of an arbitrary sound insulation member. 3. The method according to claim 2, wherein the second storage unit stores, as a database for each sound insulation structure, data of an impulse response when various sound insulation members are used for different sound insulation structures; The sound realizing means reads sound data of an arbitrary sound source and data of an impulse response of a sound insulating member of an arbitrary sound insulating structure from the first and second storage means, and performs a convolution operation. Real sound data generator. 4. The real sound generating means according to claim 1, wherein said real sound generating means performs convolution based on gain correction data for said real sound data corresponding to an assumed sound passing environment from said sound source to a sound receiving point. A real sound data generation device for sound insulation performance evaluation, wherein a gain of the calculated data is corrected to generate real sound data. 5. The sound processing apparatus according to claim 1, further comprising a selection unit that selects an arbitrary sound source and an arbitrary sound insulation member, wherein the actual sound generation unit transmits data of the selected sound source and the sound insulation member to the first sound source. And performing the calculation by reading from the second storage means. 6. A sound insulation performance evaluation device comprising: the sound insulation performance evaluation real sound data generation device according to claim 1; and sound output means for reproducing and outputting the real sound data. 7. A computer-readable information storage medium storing information for generating actual sound data for evaluating sound insulation performance of an arbitrary sound insulating member for an arbitrary sound source, comprising: sound data of various sound sources; An information storage medium comprising: data of an impulse response of a member, sound data of an arbitrary sound source, and actual sounding information for creating actual sound data by performing convolution operation of data of an impulse response of an arbitrary sound insulating member. . 8. A computer-readable information storage medium in which information for generating actual sound data for evaluating sound insulation performance of an arbitrary sound insulating member for an arbitrary sound source is stored, wherein sound data of various sound sources are provided. Realization to create real sound data by convoluting the impulse response data when various sound insulation members are used for the sound insulation structure, sound data of an arbitrary sound source, and impulse response data of any sound insulation member An information storage medium comprising: information; 9. The data of the impulse response according to claim 8, wherein the data of the impulse response is created for each different sound insulation structure, as the data of the impulse response when various sound insulation members are used, in association with each sound insulation structure, The information storage medium, wherein the realization information includes information for convolving the sound data of an arbitrary sound source and the data of an impulse response of a sound insulation member of an arbitrary sound insulation structure. 10. The information according to claim 7, comprising information for calculating gain correction data for the actual sound data based on input data of a sound passing environment from the assumed sound source to a sound receiving point. An information storage medium, wherein the realization information includes information for correcting a gain of convoluted data based on the gain correction data to generate real sound data. 11. The impulse response data according to claim 7, wherein the impulse response data includes a plurality of impulse response data obtained by changing a distance of a sound source to the same sound insulation structure. An information storage medium including information for creating the actual sound data using impulse response data at an arbitrary distance.