JP3447074B2 - Sound insulation performance simulation system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus capable of simulating sound insulation by changing a noise level for each location environment when reproducing a noise source. About. 2. Description of the Related Art Conventionally, a sound insulation performance experience apparatus capable of actually confirming the sound insulation performance of a wall of a house in order to support sound insulation design in a house design has been known. For example, as shown in FIG. 4, the interior space includes four walls having different sound insulation performances, and four exterior spaces each of which is regarded as an exterior wall. Exterior space is corridor 21 ・ 22 ・ 23.2
4, the sound of the piano played in the music room 20 depends on the sound insulation performance of the wall, the presence of windows and doors,
A sound insulation performance experience device is provided, which allows the user to experience how much they can hear at 22, 23, and 24 at the actual noise level. [0003] However, in the above-mentioned prior art, although the sound insulation performance of the wall can be actually confirmed, the corridors 21, 22, 23.
Because the transmitted sound of the piano is heard at 24, the transmitted sound is intuitively increased, and when the size of the windows and doors is changed, or when the location of the house is changed, the transmitted sound is reduced to the noise level. I couldn't experience how it affected me. For example, in FIG. 3, when a piano, audio, or the like is used as a main sound source and the influence of the sound on a neighboring land as noise is checked, a person h on the boundary of the neighboring land is checked.
Will hear the transmitted sound of the piano and the background noise such as road noise and noise. At this time, assuming the night time in a quiet residential area, the background noise is very low and the transmitted sound sounds loud intuitively. Is performed, the background noise becomes very loud, so that the transmitted sound of the same level can be perceived as being small. As described above, the noise level of the transmitted sound is affected by the background noise depending on the location condition and the time zone, and it is very important for the soundproofing design to take the influence of the background noise into consideration. Therefore, the present invention reproduces the background noise that matches the location conditions and time zone simultaneously with the transmitted sound, allows the user to experience the noise level under various location conditions, and flexibly responds to the design plan. The purpose is to configure a performance simulation system. [0004] The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. The noise of the noise source and the darkness of each location and environment
A recording medium for separately recording noise;
The noise of the noise source recorded in the wall, floor, ceiling, sash and
Reduced by the amount of transmission loss according to the specifications of each target part of the door
The digital filter F
The noise of the noise source after being attenuated by the filter F is transmitted sound.
Speakers that play as
A speaker that simultaneously reproduces the background noise of the surrounding noise
Transmission noise and background noise attenuated by the transmission loss
At different times to experience noise levels in different locations.
It is a well-constructed one. Next, the operation will be described. The noise source is attenuated by the amount of transmission loss of the target part and played back as transmitted sound, and at the same time, by playing background noise that matches the location conditions and time zone, it is possible to give a sense of realism, and the noise level to the user You can have them evaluate the performance of the target site through the actual experience. Also, check each target site,
The specification of walls, floors, ceilings, sashes and doors can be determined, and it can be flexibly handled according to the design plan. Next, an embodiment will be described. FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flowchart showing the same, and FIG. 3 is a diagram showing a state of occurrence of transmitted sound and background noise. In FIG. 1, the configuration of the sound insulation performance simulation system of the present invention will be described. A level meter L is connected to the controller C, and a microphone M is connected to the level meter L. Further, the controller C is connected to a selector S. The selector S is connected to a first deck D1, a second deck D2, a digital filter F, and the level meter L, and a part set by the controller C. Information such as specifications and specifications is input to the selector S, and from the selector S, the first deck D1, the second deck D2, the digital filter F, and the level meter L are set so as to have desired portions and specifications. The first deck D1 and the second deck D2 can faithfully reproduce digitally recorded sound, and the recording medium is a magnetic tape, a magnetic floppy disk, a CD, or the like. The first deck D1 and the second deck D2
Is connected to a digital filter F. The digital filter F enables attenuation for each frequency, and the output is connected to an amplifier A. The amplifier A has
The first speaker P1 and the second speaker P2 are connected, and the first speaker P1 and the second speaker P2 are
It is arranged in the noise experience room 10 together with the microphone M. [0007] The first deck D1 includes, for example, a music performance sound by a piano or the like recorded on a recording medium as a noise source, a bathing sound, a toilet draining sound, a kitchen washing sound, or
The noise of roads, railways, and airfields is stored. The second deck D2 stores the noise of night roads, quiet residential areas, and residential areas with many shops recorded on the recording medium as background noise. ing. The digital filter F is
The noise source is attenuated by the amount of transmission loss for each soundproofing performance that has been compiled into a database for each target site such as a wall, floor, ceiling, sash, and door. Referring to FIG. 2, a description will be given of an operation procedure of the sound insulation performance simulation system according to the present invention. First, when the type of the noise source and the type of the background noise, which are the main sound sources desired by the user, are input to the controller C by the operator O (step 1), the first deck D1 and the second deck D2 are passed through the selector S. Information is sent. When the target site and its specification (eg, wall thickness, window size, etc.) determined by the user are input to the controller C (step 2), information is sent to the digital filter F through the selector S. . Then, when the information is input and the prediction is started (step 3), the tape is reproduced. The noise source is attenuated by the digital filter F by an amount corresponding to the transmission loss for each frequency and is emitted from the first speaker P1, and the background noise is not increased or decreased by the digital filter F unless the level is changed. Emitted from the speaker P2. The user listens to them simultaneously in the noise experience room 10, evaluates them (step 4), and determines the specifications. That is, when the specification of the target part is not desirable, the specification is changed (step 5), and when it is desirable, another part is examined (step 6) or ended (step 7). Then, a check is performed for each target part, and the specifications of the wall, floor, ceiling, sash, and door are determined. As described above, the noise source is attenuated by the transmission loss amount of the target portion and reproduced as transmitted sound, and at the same time, the background noise suitable for the location conditions and time zone is reproduced, thereby giving a sense of realism. Then, the user can evaluate the performance of the target part through the actual experience of the noise level. In addition, the transmission loss amount is automatically calculated as the sum of the total transmission loss and the attenuation due to the distance, and the soundproof performance is stored in a database for each target portion so as to be able to correspond to each design plan, Various combinations are possible. That is, when the size of the sash is changed or the prediction point is changed, the predicted noise level also increases or decreases, and it is possible to flexibly respond to the design plan. It is to be noted that the present invention simulates a state in which the user hears the background sound simultaneously with the transmitted sound outside, as in the case of the person h on the adjacent land boundary shown in FIG. On the other hand, it is also possible to experience by simulating how much the transmitted sound of the external noise can be heard in the room with respect to the external noise. The present invention is configured as described above, and has the following effects. In other words, the noise source is attenuated based on the soundproofing performance data for each specification of the target part, and reproduced at the same time as the background noise, so that the user can actually experience the noise level for various location conditions. It can respond flexibly according to the plan and can support optimal soundproofing design in various location conditions.

[Brief description of the drawings] FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is also a flowchart. FIG. 3 is a diagram showing a state of occurrence of transmitted sound and background noise. FIG. 4 is a plan view showing a conventional example. [Explanation of symbols] C controller D1 first deck D2 2nd deck F Digital filter P1 first speaker P2 Second speaker S selector 10 Noise experience room

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-221987 (JP, A) JP-A-4-221986 (JP, A) JP-A-2-287770 (JP, A) JP-A-5-287 282282 (JP, A) Fully open 63-29731 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G09B 9/00 G09B 19/00 E04H 1/12 G01H 3/00

Claims (1)

(57) [Claims] [Claim 1] Noise from a noise source and background noise for each location and environment
Are separately recorded on a recording medium, and recorded on the recording medium.
Record the noise from the recorded noise source on the wall, floor, ceiling, sash, and door.
Attenuated by the amount of transmission loss according to the specifications of each target part
The digital filter F
The noise of the noise source after attenuation by the
Speakers to reproduce sound,
Speakers that simultaneously reproduce the background noise
Transmitted sound and background noise attenuated by the amount of transmission loss
To reproduce the noise level in different location conditions
A sound insulation performance simulation system characterized by being configured .