JPH11102154A - Noise simulation device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a simulation device capable of allowing a person to be experienced to really experience a noise to be leaked at a sound receiving position by specifying the kind and the position of a noise source and the sound receiving position being on a floor plan by providing a noise source inputting means and a means calculating a sound pressure level at the sound receiving position from sound shielding performances of parting members being on the pathway of a sound. SOLUTION: A person to be experienced being at the sound receiving position is made possible to experience what degree a noise is leaked at the sound receiving position from a sound generating means as a sound by specifying the kind of the noise source wanted to be heard and the position being on the floor plan of the noise source and a room in which the person wants to experience the order of a sound to be heard. In this device, the kind of the noise source which is wanted to be heard by the person to be experienced 20 and the position being on the floor plan of the noise source are specified in a noise source inputting part 14. A sound pressure level calculating part 16 calculates the sound pressure level at the sound receiving position from sound shielding performances of plural parting members being on the pathway heading from the position of the noise source specified in the noise source inputting part 14 toward the sound receiving position specified in a sound receiving position inputting part 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise simulation device and a noise simulation method that allow the user to actually experience the sound insulation performance of a partition member such as a wall, a window, and a door of a house, and can be used for evaluating the sound insulation performance of the partition member. .

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No. 6-2307 discloses this kind of prior art.
There is a "Sound insulation performance simulation system" described in No. 11. This device allows the user to experience the loudness of noise under various location conditions in accordance with target sites such as walls, floors, ceilings, and the like, and their specifications.

[0003]

When a negotiation between a customer who intends to build a house and a designer proceeds, it is common to proceed with a floor plan or the like. At that time, the customer may have anxiety that, for example, if the washing machine is placed beside the bathroom, the noise will be transmitted to the bedroom considerably, and there are requests to actually experience the noise. . Also, for example, "How much difference is there between a normal floor and a high sound insulation floor? If there is a source of vibration (for example, children jumping, slippers walking sound, washing machine, etc.) on the upper floor, the impact is lower floor. Customers may have concerns about the noise, and there is also a demand that they want to actually experience the noise.

However, the above-mentioned prior art is not an apparatus that allows the user to experience noise in a form corresponding to a specific floor plan.

[0005] The object of the present invention has been made in view of the above circumstances, and the invention according to claim 1, 2, 3 or 20 is based on the floor plan, the type and position of the noise source and the sound reception. Claims 4 and 5 are to provide a noise simulation device and a noise simulation method that allow the user to experience the noise leaking to the sound receiving position in a realistic manner by specifying the position.
According to the invention described in 5, 6, 7, 8 or 20, the noise leaking to the sound receiving position can be realistically experienced by designating the type and position of the noise source and the sound receiving position on the floor plan, and It is an object of the present invention to provide a noise simulation device and a noise simulation method that allow users to experience noise transmitted through a partition member having a novel configuration whose sound insulation performance against sound is unknown.

Another object of the invention described in claims 9 to 15 or 20 is that noise leaks via the outside (for example, noise and traffic noise leaking from an adjacent room because the windows are fully opened).
It is an object of the present invention to provide a noise simulation device and a noise simulation method that allow the user to experience the sound realistically.

It is another object of the present invention to provide a noise simulation apparatus and a noise simulation method capable of realistically experiencing an impact sound between upper and lower floors or the like.

[0008]

According to a first aspect of the present invention, there is provided a noise simulation apparatus for recording and reproducing noise, and a noise recording / reproducing means for inputting a floor plan of a house as a floor plan. A floor plan input means and a partition member that appears in the floor plan and partitions the room of the house,
Sound insulation performance input means for inputting information on sound insulation performance, and among the noises recorded by the noise recording / reproducing means, the type of the noise source desired to be heard and the position of the noise source on the floor plan are set forth above. Noise source input means for designating on the floor plan, sound receiving position input means for designating on the floor plan the room where the user wants to experience the noise hearing condition, and the noise source input means The sound pressure level at the sound receiving position is calculated from the sound insulation performance of the plurality of partition members on the sound path from the designated noise source position to the sound receiving position specified by the sound receiving position input means. Sound pressure level calculating means, and noise processing means for attenuating a noise signal in accordance with a difference between the sound pressure level at the sound receiving position calculated by the sound pressure level calculating means and the sound pressure level of the noise source. ,
Sound generating means for outputting the noise signal processed by the noise processing means as sound to the experience room.

According to a second aspect of the present invention, a noise simulation method according to the present invention records a noise to be experienced, then inputs a floor plan of a house to be experienced as a floor plan,
Enter the information on the sound insulation performance of the partition members that appear in the floor plan and divide the room in the house, and then specify the type of noise source and its location on the floor plan from the plurality of recorded noises Then, instruct the room on which the user wants to hear the noise to be heard as the sound receiving position on the floor plan,
Next, the sound pressure level at the sound receiving position is calculated from the sound insulation performance of the plurality of partition members on the sound path from the designated noise source position to the sound receiving position. Depending on the difference between the sound pressure level of the
The noise signal is attenuated, and the attenuated noise signal is output as sound.

According to a third aspect of the present invention, in the method of the second aspect, the recording of the noise to be experienced, the floor plan of the house to be experienced, and information on the sound insulation performance of the partition member are input in advance. It has been put into a database.

According to a fourth aspect of the present invention, there is provided a noise simulation apparatus according to the present invention, comprising: a noise recording / reproducing means for recording and reproducing noise; a layout input means for inputting a floor plan of a house as a floor plan; Member information input means for inputting information about the partition members that appear in the floor plan and partition the room of the house and information about the room, and air of each of the partition members based on the information input to the member information input means. Sound insulation performance prediction means for predicting sound insulation performance against sound, and among the noises recorded by the noise recording / reproduction means, the type of noise source desired to be heard and the position of the noise source on the floor plan are shown in the floor plan. A noise source input means for designating the above, and a sound receiving position input means for designating on the floor plan the room in which the user wants to experience the above-mentioned noise. And the sound insulation performance prediction means of the plurality of partition members on a sound path from the noise source position designated by the noise source input means to the sound reception position designated by the sound reception position input means. A sound pressure level calculating means for calculating a sound pressure level at a sound receiving position from the sound insulation performance predicted in the above, and a sound pressure level calculated by the sound pressure level calculating means and a sound pressure level of the noise source. A noise processing means for attenuating the noise signal in accordance with the difference, and a sound generating means for outputting the noise signal processed by the noise processing means as a sound to the experience room.

According to a fifth aspect of the present invention, there is provided a noise simulation method according to the present invention, in which a noise desired to be experienced is recorded, and a floor plan of a desired home is input as a floor plan.
Information about the partition members that appear in the floor plan and partition the room of the house and information about the room are input, and then sound insulation against air noise of each of the partition members based on the information about the partition members and the information about the room. Predict the performance, then specify the type of noise source and the location on the floor plan of the noise source from multiple recorded noises, and then set the room where you want to experience the above-mentioned noise as the sound receiving position Instructed on the floor plan, and then the sound pressure at the sound receiving position from the predicted sound insulation performance of the plurality of partition members on the sound path from the designated noise source position to the sound receiving position. Calculates the level, then attenuates the noise signal according to the difference between the sound pressure level at the noise source position and the sound pressure level at the sound receiving position, and then outputs the attenuated noise signal as sound Is configured to It is intended.

According to a sixth aspect of the present invention, in the method of the fifth aspect of the present invention, the recording of the noise to be experienced, the layout of the house to be experienced, the information on the partition members and the information on each room are previously stored. The data is inputted, and the sound insulation performance of each partition member against air noise is predicted in advance and stored in a database.

According to a seventh aspect of the present invention, in the method of the fifth or sixth aspect, the prediction of the sound insulation performance with respect to the air sound is performed by the sound source room where the noise source is located, the partition member,
And SE built corresponding to the sound receiving room as the sound receiving position
The energy ratio between the sound source room and the sound receiving room is obtained from the power balance equation relating to the A model, the energy ratio between the sound source room and the sound receiving room, the volume ratio between the sound source room and the sound receiving room, the area of the partition member, and the sound receiving room. The sound insulation performance (sound transmission loss, inter-room sound pressure level difference) is calculated based on the sound absorbing power of the above.

According to an eighth aspect of the present invention, in the method of the fifth or sixth aspect, the prediction of the sound insulation performance with respect to the air sound is performed by the sound source room where the noise source is located, the partition member,
And a finite element model and / or a boundary element model corresponding to the sound receiving room as a sound receiving position, and a sound source position and a sound power are set, and the sound / vibration equation of the finite element model and / or the boundary element model is set. To determine the sound pressure level of the sound source room and the sound receiving room, and based on the sound pressure level difference between the sound source room and the sound receiving room, the area of the partition member, and the sound absorbing power of the sound receiving room, The transmission loss and the inter-room sound pressure level difference) are calculated.

According to a ninth aspect of the present invention, there is provided a noise simulation apparatus for recording and reproducing noise, and a sound power level measuring means for measuring a sound power level when recording noise. And a floor plan input means for inputting a floor plan of the house, and the type of noise source (sound: washing machine, refrigerator, ventilation fan, TV sound, etc.) desired to be heard among the recorded and measured noise and impact, and the Noise source input means for specifying the location on the floor plan of the noise source (in which room the noise source is located on the floor plan), and the room on which the user wants to experience the audibility of the noise is specified on the floor plan Sound receiving position input means and information (section structure, area, density, etc.) about each partition member composed of walls, windows, doors, etc. appearing in the floor plan, information about each room (volume, sound absorption power, etc.)
Information input means for inputting the information, sound insulation performance calculation means for calculating the sound insulation performance (sound transmission loss) of each partition member based on the input information, and a sound receiving position (experienced person) from the designated noise source position. Distance attenuation calculation means for calculating the distance attenuation for each sound path toward the sound path toward the sound path, and the sound transmission loss of the plurality of partition members on the sound path and the distance attenuation therebetween. Sound pressure level difference calculating means for calculating a sound pressure level difference between a sound source and a sound receiving position; noise processing means for attenuating noise according to the calculation result; and noise processed by the noise processing means as sound. For generating sound.

According to a tenth aspect of the present invention, there is provided a noise simulation method according to the present invention, in which a noise to be experienced is recorded, a sound power level is measured, and a floor plan of the house to be experienced is input. Information (section structure, area, density, etc.) about each partition member shown above and information (volume, sound absorption power, etc.) about each room are input, and then, based on the information about the partition members and the information about the room, , Calculate the sound insulation performance (sound transmission loss) of each partition member,
Next, specify the type and location of the noise source from the multiple recorded noises, then specify the room on which you want to experience how the noise is heard on the floor plan, and then specify the room on the sound path. From the calculation results of the sound insulation performance of a plurality of partition members and the distance attenuation between them, calculate the difference in sound pressure level between the sound source and the sound receiving position, and attenuate the noise signal according to the difference in sound pressure level, Thereafter, the attenuated noise is output as sound.

The present invention according to claim 11 provides the present invention according to claim 10.
In the described method of the present invention, the recording of the noise to be experienced and the measurement of the sound power level, the layout to be experienced, the information on the partition members and the information on each room are input in advance, and the sound insulation performance of each partition member is predicted in advance. It is a database.

According to a twelfth aspect of the present invention, there is provided a noise simulation apparatus for recording and reproducing noise, and a sound power level measuring means for measuring a sound power level during noise recording. And impact force measuring means for measuring the strength and characteristics of the applied shock, layout input means for inputting the layout of the house, and the type of sound source (sound: Washing machine, refrigerator, ventilation fan, TV sound, etc., impact: children jumping, slippers walking sound, etc.) and their location on the floor plan of the noise source (in the floor plan, which room has the noise source) A noise source input means for designating, a sound receiving position input means for designating a room on which the user wants to experience how the noise is heard on the floor plan, and each section including walls, windows, doors, and the like shown in the floor plan. To the member Information (section, area, density, etc.) to be input, and member information input means for inputting information (volume, sound absorbing power, etc.) about each room, and the sound insulation performance (sound transmission loss) of each partition member based on the input information. ), And for each sound path from the designated noise source position to the sound receiving position (the position of the room where the user is assumed to be).
A distance attenuation calculating means for calculating distance attenuation, and a sound pressure level for calculating a sound pressure level difference between a sound source and a sound receiving position from sound transmission loss of a plurality of partition members on a sound path and distance attenuation therebetween. A difference calculating means, a noise processing means for attenuating the noise according to the calculation result, and a vibration-acoustic analysis using the impact force measured by the impact force measuring means as an excitation condition,
As a result, an impact sound calculating means for calculating the radiated sound,
A sound generating means is provided for outputting the noise processed by the noise processing means and the noise calculated by the impact sound calculating means as sound.

According to a thirteenth aspect of the noise simulation method of the present invention, the noise to be experienced is recorded and the sound power level is measured. Measure the characteristics, then enter the floor plan of the house you want to experience, and then information on each partition member (cross-sectional configuration, area, density, etc.) shown on the floor plan, information on each room (volume, sound absorption) etc)
Then, based on the information on the partition member and the information on the room, calculate the sound insulation performance (sound transmission loss) of each partition member, and then record a plurality of recorded noises and a plurality of measured noises. From the impact of the noise, specify the type and location of the noise source, then specify the room where you want to experience how the noise is heard on the floor plan, and then the sound insulation performance of multiple partition members on the sound path , From the calculation result of the distance attenuation between them,
The sound pressure level difference between the sound source and the sound receiving position is calculated, and then the noise signal is attenuated according to the sound pressure level difference. Vibration-acoustic analysis was performed using force as an excitation condition, the resulting radiated sound was calculated, and then the noise processed by damping and the noise calculated based on the impact force were output as sound. Things.

The present invention according to claim 14 provides the present invention according to claim 10.
Further, in the method of the present invention described in 13, the distance attenuation formula from a sound source is used as a distance attenuation calculation method. That is, the above problem was solved by using a distance attenuation formula from a sound source as a means for calculating the distance attenuation.
In other words, the distance attenuation is calculated based on the following formula: sound pressure level L _p = sound power level L _w −10 log (r) −5 at a distance r.
Although the above equation is an equation relating to a point sound source in a semi-free space, an equation for a free space may be adopted as necessary, or an equation for a line sound source or a surface sound source may be adopted.

The present invention according to claim 15 provides the invention according to claim 13.
Further, in the described method of the present invention, the recording of the noise to be experienced and the measurement of the sound power level, the measurement of the intensity and characteristics of the impact, the layout of the house to be experienced, the information on the partition members and the information on each room are previously input. The sound insulation performance of each partition member is predicted in advance and stored in a database.

In the noise simulation apparatus according to the present invention, an impact force input means for inputting the strength and characteristics of an impact to be applied and a layout input means for inputting a sectional view of a house are measured. Among the impacts, the type of noise source you want to hear (bounce of children, slipper walking sound, washing machine, etc.) and the location on the floor plan of the noise source (in which room on the floor plan is the noise source) The noise source input means for designating, the sound receiving position input means for designating the room on which the user wants to experience the sound of the noise on the floor plan, and the floor plan, ceiling, walls, etc. appear on the floor plan. Information on each partition member that partitions a room in a house (cross-sectional configuration, area, density, etc.), information on each room (volume, sound absorption power, etc.)
Member information input means for inputting the impact force measured by the impact force measuring means, vibration-acoustic analysis is performed as an excitation condition, and as a result, an impact sound calculating means for calculating a resulting sound;
A sound generating means for outputting the shock sound calculated by the shock sound calculating means as a sound is provided.

In the noise simulation method according to the present invention, when there is noise due to an impact to be experienced, the strength and characteristics of the impact are input, and then the floor plan of the house to be experienced is input. Next, information (section structure, area, density, etc.) about each partition member that appears on the floor plan and partitions the room of the house, information about each room (volume,
Sound absorption power), then specify the type and location of the noise source from the measured multiple impacts, and then specify the room on which you want to experience the noise in the floor plan. Then, a vibration-acoustic analysis is performed using the measured impact force as an excitation condition, a resulting sound is calculated, and then the calculated sound is actually output as a sound.

The present invention described in claim 18 provides the present invention according to claim 17.
In the method of the present invention described above, the vibration-acoustic analysis method using an impact force as an excitation condition is performed by using at least one of a finite element method, a boundary element method, a statistical energy analysis method, and a driving point impedance method. It is designed to calculate solid sound.

The present invention described in claim 19 provides the present invention according to claim 17.
In the method of the present invention, the measurement of the impact to be experienced, the layout of the room to be experienced, the information on the partition member and the information on the room are input in advance and are stored in a database.

[0027] The present invention described in claim 20 is the invention according to claim 2,
In the method of the present invention described in any one of 3, 5 to 8, 10, 11, 13 to 15, and 17 to 19, the calculation of the sound pressure level at the sound receiving position includes calculating the sound pressure from the noise position to the sound receiving position. For each of all the paths, how much the noise is attenuated each time when passing through the partition member is calculated based on the information on the sound insulation performance of the partition member, and the sound pressure level at the sound receiving position is obtained. This is calculated by adding the sound pressure level at the sound receiving position on the route.

[0028]

[Action]

(1) The invention described in claim 1, 2, 3, or 20 has the following effects. By designating on the floor plan the type of noise source that you want to hear and its location on the floor plan and the room where you want to experience the listening condition on the floor plan, Can be realistically experienced as the sound from the sound generating means.
As a result, the experienced person can experience the noise environment in accordance with the floor plan of the floor plan that he / she has examined, and can confirm the change in the noise environment when the floor plan is changed. It is possible to evaluate the sound insulation performance of the partition members that make up the floor plan of the room.

(2) The invention described in claims 4, 5, 6, 7, 8 or 20 has the following effects. Information on the partition members constituting the floor plan of the room of the house, predicting the sound insulation performance against air noise of each partition member from the information on each room, the type of noise source to be heard and the position on the floor plan of the noise source, By designating the room where the user wants to hear the sound as a sound receiving position on the floor plan, the user at the sound receiving position can determine how much the noise leaks to the sound receiving position as a sound from the sound generating means. You can experience it. As a result, the experiencer can experience the noise environment in accordance with the floor plan of the floor plan that he / she has examined, can confirm the change in the noise environment when the floor plan is changed, and furthermore, has a new configuration with unknown sound insulation performance. The noise transmitted through the members can be experienced, and the house designer or a researcher can evaluate the sound insulation performance of the partition members constituting the floor plan of the house.

(3) The invention according to claims 9 to 15 or 20 has the following effects. Japanese Patent Application No. 9-043985 "Noise Simulation Apparatus and Method" is an apparatus and method that allows you to experience the noise leaking to the sound receiving position by specifying the position of the noise source and the sound receiving position on the floor plan. However, since noise leaking through the outdoors cannot be taken into account, for example, the windows were fully opened, so that no noise or traffic noise in the next room leaked through the open windows could be experienced. On the other hand, in the inventions of claims 9 to 15 and 20, information on each partition member (cross-sectional configuration, area, density, etc.), information on each room (volume, sound absorption power, etc.), the type of noise source desired to be heard,
Specify the room on which you want to experience the location and hearing on the floor plan. While calculating the sound insulation performance (sound transmission loss) of each partition member from the input information, if there is noise due to impact, vibration-acoustic analysis is performed using the measured impact force as the excitation condition, and as a result, Calculate radiated sound. By outputting the noise as a sound from a speaker, a headphone, or the like based on the calculation result, the user in the experience room can realistically experience the degree of the noise in the designated room. Therefore, the user can actually experience the noise environment in accordance with the floor plan that the customer is examining, and can also check the change in the noise environment when the floor plan is changed as needed. In particular, since noise leaking through the outdoors can be taken into account, for example, the windows are fully opened, so that it is possible to experience a case where noise in a neighboring room, traffic noise, or the like leaks through an open window. The apparatus and method can be used as a sales promotion tool for customers and also for designers or researchers to evaluate the sound insulation performance of components.

In particular, since a simple formula for calculating the distance attenuation is used in claim 14, the effect of the distance attenuation can be easily considered in a short time.

(4) The invention according to claims 16 to 19 or 20 has the following effects. Sounds that are problematic in houses include airborne sounds and solidborne sounds. What is airborne sound?
The sound is a sound that propagates in the air inside and outside the room, and the solid-borne sound is a sound that is generated from the vibration when the vibration is transmitted through the building structure (floor, wall, pillar, etc.).

As a device for simulating these sounds, the prior art concerning airborne sound is disclosed in Japanese Patent Application No. 9-043985.
There was a "noise simulation device", and when a noise source and a sound receiving position were designated, the user could experience the noise heard at that position. This is for airborne sound only, and cannot be considered solid-borne sound such as floor impact sound.

[0034] Further, the prior art for solid-borne sound is as follows.
There is Japanese Patent Application No. Hei 8-186073 “Noise simulation device”.
This is an apparatus and method in which the user can experience the impact sound in another room by inputting the impact sound insulation performance in advance, inputting the impact force of the noise source, and performing attenuation processing. This method measures in advance the impact noise and sound insulation performance (driving point impedance of the floor, etc.)
Without knowing it, we couldn't simulate. That is, it was not possible to experience a sample (floor, wall, etc.) whose impact sound insulation performance was not understood. On the other hand, in the invention of claims 16 to 19 or 20, information on each partition member (cross-sectional configuration, area, density, etc.), information on each room (volume, sound absorption power, etc.), and the type of noise source to be heard Specify the room on which you want to experience the location and hearing on the floor plan. Vibration-acoustic analysis is performed using the impact force measured from the input information as the excitation condition,
The resulting sound is calculated. By outputting the noise as a sound from a speaker, a headphone, or the like based on the calculation result, the user in the experience room can realistically experience the degree of the noise in the designated room. Therefore, the user can actually experience the noise environment in accordance with the floor plan that the customer is examining, and can also check the change in the noise environment when the floor plan is changed as needed. The apparatus and method can be used as a sales promotion tool for customers and also for designers or researchers to evaluate the sound insulation performance of components.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION

First Embodiment (FIGS. 1 to 3) FIG. 1 is a block diagram showing a first embodiment of a noise simulation apparatus according to the present invention, FIG. 2 is a diagram showing an example of a floor plan, and FIG. It is a figure showing a propagation route.

As shown in FIG. 1, the noise simulation apparatus comprises a noise / playback recording unit 11, a floor plan input unit 12, a sound insulation performance input unit 13, a noise source input unit 14, a sound receiving position input unit 15, a sound pressure level calculation. It is configured to include a section 16, a noise processing section 17, and a sound generating section 18 so that the experience person 20 can experience the noise leaking to the sound receiving position on the floor plan in the experience room 19.

The noise / reproduction / recording unit 11 is for the experienced person 20 to record the noise to be experienced in advance.
The noise recording / reproducing unit 11 includes, for example, a tape recorder, a microphone, and a connection cable. The type of the tape recorder may be any type such as an analog type, a digital type, and a mini disk device. Further, for example, the recorded noise signal may be taken into a hard disk of a computer through an AD converter or the like. Further, a reproducing unit for adding so-called background noise such as road noise and noise may be separately prepared, or the background noise may be synthesized using a computer.

The floor plan input section 12 is for inputting a floor plan of a house to be experienced as a floor plan with reference to a plan view or the like. For example, mouse and CAD (Comput
er Aided Design) Input using software. In addition, a floor plan may be automatically generated from a plan view captured using a scanner. An example of a floor plan is shown in FIG.

The sound insulation performance input section 13 provides information (for example, sound transmission loss; sound receiving side suction force; walls and windows) on sound insulation performance of partition members (eg, house walls, windows, doors, etc.) constituting a floor plan of a house. , The area of a partition member such as a door; the spatial sound pressure level difference). For example, in the case of FIG. 2, the partition members are the first wall 21, the second wall 22, and the third wall 23.
There are three walls 21, 22, and 23, and the house 24 has a layout of a first room 25, a second room 26, and a third room 27. The value of the inter-room sound pressure level difference between the walls 21, 22, and 23 is input. An example is shown in Table 1.

[0040]

[Table 1]

At this time, if the sound pressure level difference between the rooms is unknown and only the value of the sound transmission loss is known, the sound pressure level between the rooms is determined from the sound transmission loss, the sound absorbing power of each room, and the wall area of the partition member. The difference shall be calculated. When the partition member is composed of a plurality of members (for example, when a wall is provided with a door, etc.), the total sound transmission loss is calculated from the value and area of the sound transmission loss of each partition member. The sound pressure level difference shall be determined.

The noise source input section 14 is provided for inputting the type of noise source (for example, a washing machine, a refrigerator, a ventilation fan,
Sound of a television set, etc.) and its position on the floor plan of the noise source. Noise recording
If a plurality of noises have been recorded by the reproduction unit 11, one of them must be selected. For example, if noise is captured on a computer hard disk, the file name is input. The input of the noise source position is designated by picking the floor plan displayed on the computer display with a mouse, for example. For example, a washing machine (during dehydration) 2 as a noise source
Table 2 shows the sound pressure level when 8 is specified, and FIG. 2 shows an example of the position specification.

[0043]

[Table 2]

The sound receiving position input section 15 is for designating a room where the user wants to hear the noise input from the noise source input section 14 as a sound receiving position on the floor plan. The input of the position is specified by picking, for example, with a mouse on the floor plan displayed on the computer display. FIG. 2 shows an example of the position designation.

The sound pressure level calculation unit 16 includes a plurality of sound pressure level calculation units 16 on a path from the position of the noise source designated by the noise source input unit 14 to the sound reception position designated by the sound reception position input unit 15. The sound pressure level at the sound receiving position is calculated from the sound insulation performance of the partition member. There may be a plurality of paths through which the noise propagates, and an example of the calculation performed by the sound pressure level calculation unit 16 in this case will be described with reference to FIG.

Identify all possible paths. However, the route is limited to the case of traveling in one direction. In the case of FIG.
There are two possible routes: routes a and b.

Focusing on one path, the sound pressure level at the sound receiving position is calculated based on the sound pressure level difference between the rooms by calculating how much the noise is attenuated each time it passes through the partition member. . First, with respect to the path a (path that transmits only the first wall 21), subtraction represented by [(sound pressure level of noise source) − (sound pressure difference between rooms)] is performed for each frequency. Table 3 shows an example.

[0048]

[Table 3]

Similarly, the route b (the third wall 23 and the second wall 2
2). Table 4 shows an example.
Shown in

[0050]

[Table 4]

The sound pressure levels at the sound receiving position are finally obtained by adding all the obtained sound pressure levels. Table 5 shows an example. However, since the addition is a dB value, the addition is performed in accordance with Equation 1.

[0052]

[Table 5]

L = 10log (10L1 ^{/ 10} + 10L2 ^{/ 10} +... + 10Ln ^{/ 10} ) Equation 1 (L: sum of sound pressure levels [dB], ^{L1 to Ln} : sound pressure level of each path) [dB])

The noise processing unit 17 generates a noise signal according to the difference (attenuation) between the sound pressure level at the sound receiving position calculated by the sound pressure level calculation unit 16 and the sound pressure level of the noise source. Is attenuated. However, when the value of the attenuation becomes negative, the attenuation is assumed to be equal to the sound pressure level at the noise source position. Table 6 shows an example.

[0055]

[Table 6]

The sound generator 18 outputs the noise signal calculated by the noise processor 17 as sound into the experience room 19. The sound generator 18 may be composed of, for example, an audio amplifier and a speaker, or may be composed of a headphone, an earphone, or the like, but has as good (flat) frequency characteristics as possible. Things are desired. FIG. 1 shows an example in which a speaker is provided on the wall surface of the experience room 19. Although only one speaker is shown in FIG. 1, a plurality of speakers can be prepared on the surrounding wall so as to enable reproduction from an arbitrary direction.

A noise simulation method using the above-described noise simulation apparatus 10 will be described below. First, the experience person 20 or a house designer records the noise desired to be experienced using the noise recording / reproducing unit 11.

Next, the experience person 20 or the house designer,
The floor plan of the house where the user wants to experience noise is input as a floor plan using the floor plan input unit 12.

Next, the user 20 or the house designer,
Using the sound insulation performance input unit 13, information on the sound insulation performance of the partition member in the house is input.

If the above procedures (1) to (4) are stored in a database in advance, the following procedure is started.

Using the noise source input unit 14, the user 20 or the house designer inputs the type of the noise source to be heard and the position on the floor plan of the noise source.

Next, the experience person 20 or the house designer,
Using the sound receiving position input unit 15, a room where the user wants to experience how the noise from the noise source input by the noise source input unit 14 is heard is input as a sound receiving position on the floor plan.

When the above-mentioned procedures (1) to (4) are executed, the sound pressure level calculating section 16 calculates the sound pressure level based on the sound insulation performance of a plurality of partition members on the sound path from the designated noise source position to the sound receiving position. Calculate the sound pressure level at the sound receiving position. At this time, the sound pressure level calculation unit 16 calculates the sound pressure levels at the sound receiving positions for all the paths through which the sound propagates, and adds them to calculate the sound pressure levels at the final sound receiving positions. I do.

Next, the noise processing section 17 attenuates the noise signal from the difference between the sound pressure level at the noise source position and the sound pressure level at the sound receiving position.

After that, the sound generating section 18
The noise signal calculated in 7 is output as sound into the experience room 19, and the experience person 20 in the experience room 19 experiences the noise.

According to the first embodiment, the following effects can be obtained. Experience person 20 and house designer etc.
4, the user inputs the type of noise source desired to be heard and the position on the floor plan of the noise source, and uses the sound receiving position input unit 15 to set the room in which the user wants to hear the sound as a sound receiving position on the floor plan. , The user 2 in the experience room 19
A value of 0 allows the user to experience how much the noise leaks to the sound receiving position as the sound from the sound generating means 18. As a result, the experienced person 20 can experience the noise environment in accordance with the floor plan of the floor plan examined by the user, can also confirm the change in the noise environment when the floor plan is changed, and the house designer or the researcher It is possible to evaluate the sound insulation performance of the partition members constituting the floor plan of the house.

(Second Embodiment) (FIGS. 4 to 6) FIG. 4 is a block diagram showing a noise simulation apparatus according to a second embodiment of the present invention, and FIG. 5 is a hollow double as an example of a partition member. FIG. 6 is a configuration diagram showing a wall and the like, and FIG.
It is a figure which shows the SEA (statistical energy analysis) model of a heavy wall. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the noise simulation device 30 of the second embodiment, the noise simulation device 10
Has a member information input unit 31 and a sound insulation performance prediction unit 32 in place of the sound insulation performance input unit 13 in FIG.

The member information input section 31 is used for inputting information (section structure, area, density, etc.) concerning partition members appearing in the floor plan and partitioning a room of the house, and information (volume, sound absorbing power, etc.) about the room. It is for input. For example, as shown in FIG. 2, the first room 2 is formed by the first wall 21, the second wall 22, and the third wall 23 in which the house 24 is a partition member.
Table 7 shows an example of input of information about the partition members when the room is partitioned into 5, the second room 26, and the third room 27, and information about each room. Table 7 shows the case of two sheets of the same type, which are double walls facing each other via an air layer. I do.

[0070]

[Table 7]

The sound insulation performance predicting section 32 uses the SEA method (statistical energy analysis method) based on the information input to the member information input section 31 to determine the sound insulation performance (acoustic transmission loss) of each partition member against air noise. , Spatial sound pressure level difference). SEA method (statistical energy analysis method)
Table 8 shows an example of the prediction result based on.

[0072]

[Table 8]

Here, prediction of the sound insulation performance by the SEA method will be described. As shown in FIG. 5, the first wall 21, the second wall 22, and the third wall 23 as the partition members face each other.
Assuming a hollow double wall in which an air layer 35 is interposed between two face materials 33 and 34, an SEA model of the hollow double wall is as shown in FIG.

Here, reference numeral 36 in FIG. 5 denotes a sound source room where a noise source is located, and reference numeral 37 denotes a sound receiving room as a sound receiving position. The sound receiving room 37 is a completely reflecting room surrounded by a floor and a ceiling that completely reflects sound, and an open window 38 is provided in the sound receiving room 37. Reference numerals E _{1 to} E ₅ in FIG. 6 denote a sound source chamber 36, a sound source side material 33 having a hollow double wall, an air layer 35 having a hollow double wall, and a sound receiving side material 34 having a hollow double wall. , The respective energies of the sound receiving chamber 37 are shown. Arrows in FIG. 6 indicate each element (the sound source room 3).
6, the flow of power between the sound source side member 33, the air layer 35, the sound receiving side member 34, and the sound receiving chamber 37) is shown.

The sound insulation performance prediction unit 32 calculates the sound source room 36 and the sound reception room 3 from the power balance equation of the SEA model in FIG.
The energy ratio E ₁ / E ₅ with respect to 7 is obtained as in Expressions 2 and 3.

[0076]

(Equation 1)

[0077]

(Equation 2)

Here, η _ij is the coupling loss rate from element i to element j, and η _i is the internal loss rate of element i.

Thereafter, the sound insulation performance prediction unit 32
6 the volume V _1, V ₅ volume of the receiving room 37, the area of the hollow double wall F, the area of the A (this area A of the open window 38 is equivalent to the sound absorption in the receiving room 37 ), The sound transmission loss TL is calculated by Expression 4. TL = 10log E ₁ / E ₅ −10 log V ₁ / V ₅ +10 log F / A Equation 4

The sound insulation performance predicting section 32 calculates the sound pressure level difference between the rooms shown in Table 8 from the sound transmission loss TL obtained as described above, the sound absorption power of each room, and the wall area of the partition member. I do. When the partition member is composed of a plurality of members (for example, when a door is attached to a wall, etc.), the total sound transmission loss and the room-to-room sound are determined based on the value and area of the sound transmission loss of each partition member. The pressure level difference shall be determined.

The sound pressure level calculation unit 16 of the noise simulation device 30 calculates the sound insulation performance of a plurality of partition members on the path from the noise source position to the sound reception position, as predicted by the sound insulation performance prediction unit 32. , Calculate the sound pressure level at the sound receiving position. Also in this case, the sound pressure level is calculated for all the paths through which the noise propagates, and the sum is added to calculate the final sound pressure level at the sound receiving position.

A noise simulation method using the above-described noise simulation device 30 will be described below. (1) First, the experience person 20 or the house designer, etc.
The noise to be experienced is recorded using the reproducing unit 11.

(2) Next, the user 20 or the house designer or the like inputs the floor plan of the house where the user wants to experience noise.
2 is input as a floor plan.

(3) Next, the user 20 or the house designer or the like uses the member information input unit 31 to input information about the partition members of the house and information about the room.

(4) Next, the sound insulation performance prediction unit 32 predicts the sound insulation performance of each of the partition members against the air noise by the SEA method from the information on the partition members and the information on the room input to the member information input unit 31. .

If the above procedures (1) to (4) are stored in a database in advance, the procedure starts from the following procedure (5). (5) The experience person 20 or the house designer, etc.
Is used to input the type of noise source to be heard and the position on the floor plan of the noise source.

(6) Next, the experienced person 20 or the house designer wants to use the sound receiving position input unit 15 to experience how the noise from the noise source input at the noise source input unit 14 is heard. The room is input on the floor plan as the sound receiving position.

(7) When the above-described procedures (1) to (6) are executed, the sound pressure level calculation unit 16 determines the sound pressure level on the sound path from the designated noise source position to the sound receiving position. The sound pressure level at the sound receiving position is calculated on the basis of the sound insulation performance predicted by the sound insulation performance prediction unit 32 of the partition member. At this time, the sound pressure level calculation unit 16 calculates the sound pressure level at the sound receiving position for all the paths through which the sound propagates, and adds them to calculate the final sound pressure level at the sound receiving position. .

(8) Next, the noise processing unit 17 calculates the difference between the sound pressure level at the noise source position and the sound pressure level at the sound receiving position.
Attenuates the noise signal.

(9) After that, the sound generator 18 outputs the noise signal calculated by the noise processor 17 as sound to the experience room 19, and makes the experience person 20 in the experience room 19 experience the noise. .

According to the above embodiment, the following effects can be obtained. From the information on the partition members constituting the floor plan of the house room input using the member information input unit 31, and the information on each room, the sound insulation performance prediction unit 32 predicts the sound insulation performance of each partition member against the air noise, The user 20 or the like wants to use the noise source input unit 14 to input the type of the noise source he / she wants to hear and the position on the floor plan of the noise source, and to use the sound receiving position input unit 15 to experience the listening condition. By inputting the room as the sound receiving position on the floor plan, the experience person 20 in the experience room 19 can realistically experience how much the noise leaks to the sound receiving position as the sound from the sound generating unit 18. . As a result, the experienced person 20 can experience the noise environment in accordance with the floor plan of the floor plan examined by the user, can confirm the change in the noise environment when the floor plan is changed, and furthermore, a new configuration with unknown sound insulation performance. The user can also experience the noise transmitted through the partition member, and the house designer or researcher can evaluate the sound insulation performance of the partition member constituting the floor plan of the house.

The sound insulation performance prediction section 32 of the noise simulation apparatus 30 according to the second embodiment uses the finite element method and / or the boundary element method based on the information input to the member information input section 31. The following (1) to (4) may be used to predict the sound insulation performance (sound transmission loss, inter-room sound pressure level difference) of each partition member against air noise.

(1) A finite element model and / or boundary element model corresponding to the sound source room 36 where the noise source is located, the partition member, and the sound receiving room 37 as the sound receiving position are constructed.

(2) Set the position of the sound source and the sound power.

(3) The sound and vibration equations of the finite element model and / or the boundary element model are solved, and the sound source room 36 and the sound receiving room 3 are solved.
7 is determined.

(4) The sound transmission loss is determined from the difference between the sound pressure levels of the sound source room 36 and the sound receiving room 37, the area (wall area) of the partition member, and the sound absorbing power of the sound receiving room 37.

(Third Embodiment) (FIGS. 7 to 9) FIG. 7 is a block diagram showing a third embodiment of the noise simulation apparatus according to the present invention, and FIG. 8 is a diagram showing an example of a floor plan. 9 is a diagram showing an example of a noise propagation path. In the third embodiment, the same parts as those in the noise simulation device 30 of the second embodiment are denoted by the same reference numerals.

In the noise simulation device 40 of the third embodiment, the noise simulation device 30
On the other hand, the recording / measuring unit 1 has a sound power level measuring unit 41 and an impact force measuring unit 42 in addition to the noise recording / reproducing unit 11 in the noise simulation device 30, and the information input unit 2 includes the noise simulation device 30. , The floor plan input unit 12, the member information input unit 31,
The noise calculation unit 3 includes a noise source input unit 14 and a sound reception position input unit 15, and a sound pressure level difference calculation unit 16 A and a sound insulation performance calculation unit 3 similar to those in the noise simulation device 30.
2 has a distance attenuation calculator 43 and an impact sound calculator 44, has the same noise processing unit 17 as in the noise simulation device 30, and has the same sound generation as in the noise simulation device 30 in the experience room 19. It has a part 18.

A noise simulation method using the noise simulation device 40 will be described below. (1) If there is noise to be experienced, it is necessary to record the noise to be experienced by the noise recording / reproducing unit 11 in advance.

The noise recording / reproducing unit 11 comprises, for example, a tape recorder, a microphone, and a connection cable. The type of the tape recorder may be any type such as an analog type, a digital type, and a mini disk device. Further, for example, the recorded noise signal may be taken into a hard disk of a computer through an AD converter or the like. Further, a reproducing unit for adding background noise may be separately prepared, or the background noise may be synthesized using a computer.

At the same time, the sound power level is measured by the sound power level measuring section 41 to determine how much sound is output from the noise source.

(2) When there is noise due to the impact, the impact strength measuring unit 42 measures the intensity and characteristics of the impact.

(3) Enter the layout of the house you want to experience.
The layout is input by the floor plan input unit 12 with reference to a plan view and the like. For example, the input is made using a mouse and CAD (Computer Aided Design) software. In addition, a floor plan may be automatically created from a plan view taken in using a scanner. FIG. 8 shows an example of a floor plan.

(4) The member information input unit 31 is used to input information (section structure, area, density, etc.) for each partition member, and information (volume, sound absorption, etc.) for each room. If there is an open window (open window), enter its position. For example, FIG.
In the case of, the number of rooms is three, and the number of partition members is three.

(5) The sound insulation performance calculation section 32 calculates the sound insulation performance (sound transmission loss) of each partition member based on the information of (4). When the partition member is composed of a plurality of members (for example, when a wall is provided with a door), a total sound transmission loss is determined from the value and area of the sound transmission loss of each member.

The above steps (1) to (5) are performed in advance, and if a database is used, the following procedure (6)
You can start with (6) In the noise source input section 14, the type and position of the noise source are designated. When a plurality of noise sources have been recorded and measured by the noise recording / reproducing unit 11 and the impact force measuring unit 42, any one of them must be selected. For example, if the noise source is captured on the hard disk of the computer, the file name is input. Also, input the noise source position. The input of the position is specified by picking, for example, with a mouse on a floor plan displayed on a computer display. FIG. 8 shows an example of the position designation.

(7) The sound receiving position input unit 15 specifies a room on which the user wants to experience the noise / shock sound on the floor plan. The input of the position is specified by picking, for example, with a mouse on a floor plan displayed on a computer display. FIG. 8 shows an example of the position designation.

(8) The distance attenuation calculating unit 43 and the sound pressure level difference calculating unit 16A calculate the sound source-sound receiving position from the sound insulation performance of a plurality of partition members on the sound path and the distance attenuation between them. Calculate the sound pressure level difference between them. There are several possible paths through which the noise propagates. An example of the calculation will be described with reference to FIG.

Identify all possible routes. However, the route is limited to the case of traveling in one direction. In the case of FIG. 9, three possible routes are a, b, and c.

Attention is paid to one route, and a sound pressure level difference between rooms is calculated to determine how much noise is attenuated each time the vehicle passes through the partition member. The sound pressure level difference between the rooms can be obtained from the sound transmission loss obtained by the sound insulation performance calculation unit 32, the sound absorbing power of the sound receiving room, and the like. First, with respect to the path a (path that passes through only the wall), a calculation represented by (sound pressure level of the noise source) − (sound pressure level difference between rooms through the wall) is performed for each frequency, and
Find the sound pressure level at.

In the same manner, the sound pressure level in the room 1 is calculated by calculating the path b (the path passing through the wall and the wall).

Since the path c is a sound passing through two open windows (passing outdoors), the distance attenuation calculation unit 43 uses a distance attenuation formula, that is, a sound pressure level L _p at a point separated by a distance r = a sound power level. based on the L _w -10log (r) -5, determine the sound pressure level at the receiving point. Although the above equation is an equation relating to a point sound source in a semi-free space, an equation for a free space may be adopted as necessary, or an equation for a line sound source or a surface sound source may be adopted.

In general, when considered on a house-level scale, when the attenuation due to transmission through the partition member and the distance attenuation in the air are compared, the latter attenuation can be ignored. Therefore, an example is shown in which calculation is performed based on the distance attenuation formula only when the light does not pass through the partition member at all (such as when the light passes through two open windows).

All the sound pressure levels obtained in the room 1 are added together, and finally the sound pressure level at the sound receiving position is obtained.

Finally, the "difference between the sound pressure level at the noise source position and the sound pressure level at the sound receiving position" is determined.

(9) The noise processing section 4 attenuates the noise signal in accordance with the “difference between the sound pressure level at the noise source position and the sound pressure level at the sound receiving position”. However, when the value of the attenuation becomes negative, the attenuation is assumed to be equal to the sound pressure level at the noise source position.

(10) When noise is generated due to an impact, a vibration-acoustic analysis is performed using the measured impact force as an excitation condition, and the resulting radiated sound is calculated. The analysis method uses, for example, a finite element method, a boundary element method, a statistical energy analysis (SEA) method, or the like.

(11) The noise-processed noise and the calculated impact sound are output from the sound generator 5. The sound generating unit 5 may be composed of, for example, an audio amplifier and a speaker, or may be composed of a headphone, an earphone, or the like. Is desired. FIG. 7 shows an example in which a speaker is provided on the wall surface of the experience room 19. Although only one speaker is shown in FIG. 7, a plurality of speakers are prepared on the surrounding wall,
It is also possible to enable playback from any direction.

According to the above embodiment, the following operation is provided. Information (section structure, area, density, etc.) about each partition member constituting the floor plan of the house room input using the member information input unit 31, information about each room (volume, sound absorption power, etc.), and noise to be heard On the floor plan, specify the type, location, and room where you want to hear the source. While calculating the sound insulation performance (sound transmission loss) of each partition member from the input information, if there is noise due to impact, vibration-acoustic analysis is performed with the measured impact force as the excitation condition, and as a result, Calculate radiated sound. By outputting the noise as a sound from a speaker, a headphone, or the like based on the calculation result, the user in the experience room can realistically experience the noise level in the designated room. Therefore, the customer can actually experience the noise environment corresponding to the floor plan that the customer is examining, and can also confirm the change in the noise environment when the floor plan is changed at any time. In particular, since noise leaking through the outdoors can be taken into consideration, for example, when the windows are fully opened, it is possible to experience a case where noise in a neighboring room, traffic noise, etc. leaks through the open windows. The apparatus and method can be used as a sales promotion tool for customers and also for designers or researchers to evaluate the sound insulation performance of components.

(Fourth Embodiment) (FIGS. 10 and 11) FIG. 10 shows a fourth embodiment of the noise simulation apparatus according to the present invention.
FIG. 11 is a diagram showing an example of a configuration of a room and a noise propagation path.

In the noise simulation apparatus 50 according to the fourth embodiment, the impact input unit 51 and the information input unit 5
2. It has an impact sound calculation unit 53, a sound generation unit 54, and an experience room 55, and as the information input unit 52, a room configuration input unit 61, a member information input unit 62, a noise source input unit (impact position input unit) 63,
It has a sound receiving position input unit 64.

A noise simulation method using the noise simulation device 50 will be described below. (1) The impact strength measuring unit 51 measures the strength and characteristics of the impact. The impact force measuring unit 51 includes, for example, a pressure sensor for sensing an impact force, a tape recorder, and a connection cable. The impact force may be measured using a pressure sensor, an impact force sensor, or the like.

(2) Enter the room configuration of the house you want to experience. The input is performed by the configuration input unit 61 with reference to a plan view, an elevation view, and the like. For example, mouse and CAD (Computer Aided Desig)
n) Input using software. It is also possible to automatically generate a configuration diagram from a plan view captured using a scanner. FIG. 11 shows an example of a room configuration diagram.

(3) The member information input section 62 is used to input information (section structure, area, density, etc.) for each partition member, and information (volume, sound absorption, etc.) for each room. For example, in the case of FIG. 11, the information is about a floor, a joist, a ceiling, and a wall.

The above steps (1) to (3) are performed in advance, and if a database is used, the next step (4)
You can start with

(4) Vibration-acoustic analysis is performed using the measured impact force as an excitation condition, and the resulting radiated sound is calculated. The analysis method uses, for example, a finite element method, a boundary element method, a statistical energy analysis (SEA) method, a driving point impedance method, or the like. In the noise source input section 63, the type and position of the noise source are designated. If a plurality of noise sources have been measured by the impact force measuring unit 51, any one of them must be selected. For example, if the noise source is captured on the hard disk of the computer, the file name is input. Also, input the noise source position.
The input of the position is specified by picking, for example, with a mouse on a room configuration diagram displayed on a computer display. FIG. 11 shows an example of the position designation.

(5) The sound receiving position input section 64 specifies a room on which the user wants to experience the noise / shock sound on the floor plan. The input of the position is specified by picking, for example, with a mouse on the floor plan displayed on the computer display. FIG. 11 shows an example of the position designation.

(6) The calculated impact sound is output from the sound generator 54. The sound generator 54 may be composed of, for example, an audio amplifier and a speaker, or may be composed of a headphone, an earphone, or the like. ) Things are desired. FIG. 10 shows an example in which a speaker is provided on the wall surface of the experience room 55. Although only one speaker is shown in FIG. 10, a plurality of speakers may be prepared on the surrounding wall surface so that reproduction can be performed from an arbitrary direction.

According to the above embodiment, the following effects can be obtained. Information (section structure, area, density, etc.) about each partition member constituting the floor plan of the house room input using the member information input unit 62, information (volume, sound absorption power, etc.) about each room, and noise to be heard On the floor plan, specify the type, location, and room where you want to hear the source. Vibration-acoustic analysis is performed using the impact force measured from the input information as an excitation condition, and the resulting sound is calculated. By outputting the noise as a sound from a speaker, a headphone, or the like based on the calculation result, the user in the experience room can realistically experience the degree of the noise in the designated room. Therefore, the user can actually experience the noise environment in accordance with the floor plan that the customer is examining, and can also check the change in the noise environment when the floor plan is changed as needed. The apparatus and method can be used as a sales promotion tool for customers and also for designers or researchers to evaluate the sound insulation performance of components.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration of the present invention is not limited to this embodiment, and the design can be changed within the scope of the present invention. The present invention is also included in the present invention. For example, if background noise is added to the noise recording / reproducing unit 11, the experience room 19
You can also experience the noise that combines background noise.

[0131]

As described above, according to the first to third and twentieth aspects of the present invention, by specifying the type and position of the noise source and the sound receiving position on the floor plan, the sound receiving position can be set. According to the inventions described in claims 4 to 8 and 20, the leaking noise can be leaked to the sound receiving position by designating the type and position of the noise source and the sound receiving position on the floor plan. In addition to experiencing the noise realistically, it is also possible to experience the noise transmitted through the partition member having a novel configuration whose sound insulation performance against air noise is unknown.

According to the ninth to fifteenth and twentieth aspects of the present invention, noise leaking through the outdoors (for example, noise and traffic noise leaking from an adjacent room because the windows are fully opened) can be realistically experienced. I can do it. Claims 16 to 19,
According to the invention described in Item 20, it is possible to realistically experience an impact sound between upper and lower floors and the like.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a noise simulation apparatus according to the present invention.

FIG. 2 is a diagram illustrating an example of a floor plan.

FIG. 3 is a diagram showing a noise propagation path.

FIG. 4 is a block diagram showing a noise simulation apparatus according to a second embodiment of the present invention.

FIG. 5 is a configuration diagram showing a hollow double wall and the like as an example of a partition member.

FIG. 6 is a diagram showing an SEA (statistical energy analysis) model of the hollow double wall in FIG. 5;

FIG. 7 is a block diagram showing a third embodiment of the noise simulation apparatus according to the present invention.

FIG. 8 is a diagram showing an example of a floor plan.

FIG. 9 is a diagram illustrating an example of a noise propagation path.

FIG. 10 is a block diagram showing a noise simulation apparatus according to a fourth embodiment of the present invention.

FIG. 11 is a diagram illustrating an example of a configuration of a room and a noise propagation path.

[Explanation of symbols]

 Reference Signs List 10 noise simulation device 11 noise recording / playback unit 12 floor plan input unit 13 sound insulation performance input unit 14 noise source input unit 15 sound receiving position input unit 16 sound pressure level calculation unit 17 noise processing unit 18 sound generation unit 19 experience room 20 experience person Reference Signs List 30 noise simulation device 31 member information input unit 32 sound insulation performance input unit 40 noise simulation device 41 sound power level measurement unit 42 impact force measurement unit 43 distance attenuation calculation unit 44 impact sound calculation unit 50 noise simulation device 51 impact force input unit 52 information Input unit 53 Impact sound calculation unit 54 Sound generation unit 55 Experience room 61 Room configuration input unit 62 Member information input unit 63 Impact position input unit 64 Sound reception position input unit a, b Route

Claims (20)

[Claims] 1. A noise recording / reproducing means for recording and reproducing noise, a layout input means for inputting a floor plan of a house as a floor plan, and a section which appears in the floor plan and partitions a room of the house. A sound insulation performance inputting means for inputting information on sound insulation performance of the member, of the noise recorded by the noise recording / reproducing means, a type of a noise source desired to be heard and the noise source on the floor plan; A noise source input means for designating a position on the floor plan; a sound receiving position input means for designating a room on which the user wants to hear the noise as a sound receiving position on the floor plan; and the noise source The sound pressure at the sound receiving position is determined based on the sound insulation performance of the plurality of partition members on the sound path from the noise source position specified by the input means to the sound receiving position specified by the sound receiving position input means. Level Sound pressure level calculating means for calculating, and noise processing means for attenuating a noise signal according to a difference between the sound pressure level at the sound receiving position calculated by the sound pressure level calculating means and the sound pressure level of the noise source And a sound generating unit configured to output the noise signal processed by the noise processing unit as a sound into the experience room. 2. Record the noise that you want to experience, then enter the floor plan of the house you want to experience as a floor plan, and then enter information about the sound insulation performance of the partition members that appear in the floor plan and partition the rooms of the house. Next, specify the type of noise source and the location on the floor plan of the noise source from a plurality of recorded noises, and then set the room where you want to experience the above-mentioned noise as the sound receiving position. Instructed on the floor plan, Next, calculate the sound pressure level at the sound receiving position from the sound insulation performance of the plurality of partition members on the sound path from the designated noise source position to the sound receiving position, Next, according to the difference between the sound pressure level at the noise source position and the sound pressure level at the sound receiving position, the noise signal is attenuated, and then the attenuated noise signal is output as sound. Noise simulation method. 3. The noise simulation method according to claim 2, wherein the recording of the noise to be experienced, the floor plan of the house to be experienced, and the information on the sound insulation performance of the partition members are input in advance and stored in a database. 4. A noise recording / reproducing means for recording and reproducing noise, a layout input means for inputting a floor plan of a house as a floor plan, and a section which appears in the floor plan and partitions a room of the house. Member information input means for inputting information about members and information about the room, sound insulation performance prediction means for predicting sound insulation performance against air noise of each of the partition members based on information input to the member information input means, Noise source input means for designating on the floor plan the type of noise source desired to be heard and the position of the noise source on the floor plan among the noises recorded by the noise recording / reproducing means; A sound receiving position input unit for designating a room in which the user wants to experience the sound of the noise as a sound receiving position on the floor plan; and a noise source position designated by the noise source input unit. From the sound insulation performance predicted by the sound insulation performance prediction means, the sound pressure at the sound reception position of the plurality of partition members on the sound path toward the sound reception position specified by the sound reception position input means Sound pressure level calculating means for calculating a level; noise processing means for attenuating a noise signal according to a difference between the sound pressure level calculated by the sound pressure level calculating means and the sound pressure level of the noise source; A noise generating unit configured to output a noise signal processed by the noise processing unit as a sound into the experience room. 5. Recording of the noise to be experienced, inputting the floor plan of the house to be experienced as a floor plan, and then information on the partition members that appear in the floor plan and partition the room of the house, and the room Next, predicting the sound insulation performance of each of the partition members against air noise based on the information on the partition members and the information on the room, and then, based on a plurality of recorded noises, a type and a noise source of the noise source. Designate the location on the floor plan of the noise source, and then specify on the floor plan the room in which you want to experience the above-mentioned noise, as a sound receiving position. The sound pressure level at the sound receiving position is calculated from the predicted sound insulation performance of the plurality of partition members on the sound path toward the sound position, and then the sound pressure level at the sound source position and the sound receiving position are calculated. Sound pressure level According to the difference between the Le, attenuated processed noise signal, then, configured noise simulation method to output the noise signal attenuated processed as sound. 6. A recording of noise to be experienced, a floor plan of a house to be experienced, information on partition members and information on each room are input in advance, and the sound insulation performance of each partition member against air noise is predicted and stored in a database. The noise simulation method according to claim 5, wherein 7. The prediction of the sound insulation performance against air noise is performed based on a power source equation relating to a sound source room where a noise source is located, a partition member, and a SEA model constructed corresponding to a sound receiving room as a sound receiving position. Determine the energy ratio between the room and the sound receiving room, and determine the sound insulation performance based on the energy ratio between the sound source room and the sound receiving room, the volume ratio between the sound source room and the sound receiving room, the area of the partition member, and the sound absorbing power of the sound receiving room. The noise simulation method according to claim 5, wherein the noise simulation is performed. 8. Predicting the sound insulation performance against air noise includes constructing a finite element model and / or a boundary element model corresponding to a sound source room where a noise source is located, a partition member, and a sound receiving room as a sound receiving position. The position of the sound source and the sound power are set, and the sound and vibration equations of the finite element model and / or the boundary element model are solved to determine the sound pressure levels of the sound source room and the sound receiving room. The noise simulation method according to claim 5, wherein the sound insulation performance is calculated based on a difference in sound pressure level, an area of the partition member, and a sound absorbing power of the sound receiving chamber. 9. A noise recording / reproducing means for recording and reproducing noise, a sound power level measuring means for measuring a sound power level during noise recording, and a floor plan input for inputting a floor plan of a house. I want to experience the noise source input means for specifying the type of noise source that I want to hear among the recorded and measured noises and shocks, and the location on the floor plan of the noise source, and how the noise is heard Sound receiving position input means for designating a room on the floor plan, information on each partition member shown in the floor plan, member information input means for inputting information about each room, and each partition member based on the input information. Sound insulation performance calculating means for calculating the sound insulation performance of the sound source, distance attenuation calculation means for calculating the distance attenuation for each sound path from the designated noise source position to the sound receiving position, and a plurality of sections on the sound path. A sound pressure level difference calculating means for calculating a sound pressure level difference between a sound source and a sound receiving position from a sound transmission loss of a member and a distance attenuation therebetween, and a noise processing means for attenuating noise according to the calculation result. A noise simulation device characterized by providing a sound generating means for outputting the noise processed by the noise processing means as a sound. 10. Record the noise you want to experience,
Measure the sound power level, then enter the floor plan of the house you want to experience, then information about each partition member that appears on the floor plan,
Enter information about each room, and then calculate the sound insulation performance of each partition member based on the information about the partition members and the information about the room. Next, from the plurality of recorded noises, , Position, and then specify the room on the floor plan where you want to experience the noise, and then calculate the sound insulation performance of multiple partition members on the sound path and the distance attenuation between them From the results, the difference in sound pressure level between the sound source and the sound receiving position is calculated, the noise signal is attenuated according to the difference in sound pressure level, and the attenuated noise is output as sound. Noise simulation method. 11. Recording of noise to be experienced and measurement of sound power level, floor plan to be experienced, information on partition members and information on each room are input in advance, and the sound insulation performance of each partition member is predicted in advance and stored in a database. The noise simulation method according to claim 10, wherein: 12. A noise recording / reproducing means for recording and reproducing noise, a sound power level measuring means for measuring a sound power level of the noise recording, and a shock for measuring the strength and characteristics of an applied shock. Force measurement means, layout input means for inputting the floor plan of the house, and for specifying the type of noise source desired to be heard and its position on the floor plan of the noise source among the recorded and measured noise and impact. Noise source input means, sound receiving position input means for specifying on the floor plan the room in which the user wants to hear the noise, and information on each partition member shown in the floor plan and input of information on each room Means, sound insulation performance calculating means for calculating the sound insulation performance of each partition member based on the input information, and distance attenuation for each sound path from the designated noise source position to the sound receiving position. A sound pressure level difference calculating means for calculating a sound pressure level difference between a sound source and a sound receiving position from a sound transmission loss of a plurality of partition members on a sound path and a distance attenuation therebetween. A noise processing means for attenuating noise according to the above calculation results; and a vibration-acoustic analysis using the impact force measured by the impact force measurement means as an excitation condition to calculate a resulting radiated sound. A noise simulation apparatus comprising: a calculation unit; and a sound generation unit for outputting the noise processed by the noise processing unit and the noise calculated by the impact sound calculation unit as a sound. 13. Record the noise you want to experience,
Measure the sound power level. Next, if there is noise due to the impact, measure the intensity and characteristics of the impact, then enter the floor plan of the house you want to experience, and then appear on the floor plan Information about each compartment member,
Input information about each room, and then calculate the sound insulation performance of each partition member based on the information about the partition members and the information about the room. Then, record a plurality of recorded noises and a plurality of measured From the impact, specify the type and location of the noise source, then specify on the floor plan the room where you want to experience how the noise is heard, and then specify the sound insulation performance of multiple partition members on the sound path. The sound pressure level difference between the sound source and the sound receiving position is calculated from the calculation result of the distance attenuation during that time. Next, the noise signal is attenuated according to the sound pressure level difference. In the case of occurrence, vibration-acoustic analysis was performed using the measured impact force as the excitation condition, and the resulting radiated sound was calculated. Thereafter, the noise was calculated based on the damped noise and impact force. Noise configured to output noise as sound Simulation method. 14. The noise simulation method according to claim 10, wherein a distance attenuation formula from a sound source is used as a calculation method of the distance attenuation. 15. Recording of noise and sound power level to be experienced, measurement of impact strength / characteristics, layout of a house to be experienced, information on partition members and information on each room are input in advance. 14. The noise simulation method according to claim 13, wherein the sound insulation performance of the partition member is predicted in advance and stored in a database. 16. An impact input means for inputting the strength and characteristics of an impact to be applied, a layout input means for inputting a sectional view of a house, and a type of noise source desired to be heard among the measured impacts. A noise source input means for designating a position on the floor plan of the noise source, a sound receiving position input means for designating a room on which the user wants to hear the noise can be heard on the floor plan; Information about each partition member that partitions the room of the house, member information input means for inputting information about each room, and vibration-acoustic analysis are performed using the impact force measured by the impact force measurement means as an excitation condition, and as a result, A noise simulation device comprising: an impact sound calculating means for calculating a generated sound; and a sound generating means for outputting the impact sound calculated by the impact sound calculating means as a sound. 17. If there is noise due to the impact that one wants to experience, input the strength and characteristics of the impact, then enter the floor plan of the house that one wants to experience, and then enter the floor plan that appears on the floor plan. Enter information about each partition member that divides the room and information about each room, then specify the type and location of the noise source from multiple measured impacts, and then experience how the noise is heard Designate the room on the floor plan, then perform vibration-acoustic analysis using the measured impact force as excitation conditions, calculate the resulting sound, and then output the calculated sound as actual sound A noise simulation method configured to perform 18. A vibration-acoustic analysis method using an impact force as an excitation condition calculates solid sound using at least one of a finite element method, a boundary element method, a statistical energy analysis method, and a driving point impedance method. The noise simulation method according to claim 17. 19. The noise simulation method according to claim 17, wherein the measurement of the impact to be experienced, the layout of the room to be experienced, the information on the partition member and the information on the room are input in advance and stored in a database. 20. The calculation of the sound pressure level at the sound receiving position includes, for each of all the paths of the sound from the noise position to the sound receiving position, how much the noise attenuates each time the sound passes through the partition member. The sound pressure level at the sound receiving position is calculated based on the information on the sound insulation performance of the partition member, and the sound pressure level at the sound receiving position in all the routes is added and calculated. 3, 5-8, 10, 11, 1
The noise simulation method according to any one of Items 3 to 15, 17 to 19.