JPH1039731A - Noise stimulation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a correct transmission sound nearer to a reality to be heard by reproducing a noise while attenuating attenuations equivalent to a baffle performance in a partition member partitioning a room and other room to be assumed and the sound absorption performance of the other room. SOLUTION: In a baffle and sound absorption performance inputting part 3 inputting the transmission loss of a partition member partitioning first and second rooms and determining a attenuation quantity of noise equivalent to the transmission loss and the sound sbsorption quantity of the second room and setting a baffle performance and a sound absorption performance, filter coefficients are calculated based on attenuation quantities to be inputted every frequency bands. Then, after a work part 2 sets the calculated filter coefficients into an N-th order acoustic digital filter, the part 2 applies attenuation work processings based on attenuation quantities for every frequency bands with respect to a noise signal to be supplied from a sound recording part 1 to output it to an amplifier 4 as a worked noise singnal. The worked noise signal is amplified in the amplifier 4. Thereafter, a speaker 5 converts the worked noise signal in to a voice to output a transmission sound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simulation apparatus for simulating how noise generated in a room emitting noise is heard in the room receiving noise.

[0002]

2. Description of the Related Art Generally, in a living environment, noise is constantly present. And even when they are in the room, they often experience such noise. Therefore, a noise simulation apparatus capable of actually experiencing the degree of sound insulation performance of a wall, floor or ceiling of a house is disclosed in, for example, JP-A-6-230.
No. 711.

[0003]

However, the above-described noise simulation apparatus has the following problems. Current consumers should be aware of the noise of the house, on the part of the victim who suffers from the noise from the adjacent room, and on the perpetrator's side, who cares about how much noise they have emitted is leaking into the adjacent room. There are many. In particular, residents of urban apartments are strongly aware of the latter because they want to protect their privacy. Therefore, there is a demand for a device that allows a perpetrator who emits noise to experience the position of the victim who receives the noise, that is, what exactly the noise that he emits leaks into the adjacent room. However, in the above-mentioned device, the sound absorbing performance of the room receiving the noise is not taken into consideration. Even if the amount of energy of the noise that penetrates through is the same, there is a large relationship between the sound absorption performance and the magnitude of the noise, such that the noise is high in a room with low sound absorption performance and the noise is low in a room with high sound absorption performance. . For this reason,
In the above-described conventional technology, it was difficult to accurately reproduce the magnitude of noise due to the difference in sound absorption performance.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide an apparatus which enables a user to more accurately experience how much noise is heard in an adjacent room. It is in.

[0005]

According to a first aspect of the present invention, there is provided a noise simulation apparatus for recording noise generated from a noise source in a room, and connecting the room with another assumed room. The sum of the sound insulation performance of the partitioning member and the sound absorption performance of the other room is attenuated and reproduced. According to a second aspect of the present invention, there is provided a noise simulation apparatus which includes a recording unit for recording a noise generated from a noise source as a signal, and a first room on the noise emitting side and a second room on the noise receiving side. Sound insulation / sound absorption performance input means for inputting the sound insulation performance of the partition member and the sound absorption performance of the second room, processing means for attenuating the performance input by the sound insulation / sound absorption performance input means, and the processing means Reproduction means for reproducing the signal subjected to the attenuation processing as noise as noise. Here, the partition member that partitions the first room on the noise emitting side and the second room on the noise receiving side includes a wall, a ceiling, a floor, and the like.

[0006]

According to the noise simulation apparatus of the first and second aspects, the noise generated from the noise source is reproduced by attenuating the sound insulation performance of the partition member and the assumed sound absorption performance of the other room. You can listen as if you were in a different room. In addition, when performing the noise attenuation processing, the sound absorbing performance of the room on the side that receives the new noise is taken into consideration, so that when the user experiences the noise in the adjacent room, it becomes more accurate.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. 1 is a schematic diagram of a noise simulation apparatus according to the present invention.

In FIG. 1, the noise simulation apparatus includes a recording unit 1 for recording noise generated by an experienced person and reproducing the recorded noise as an electric signal, and a room (first room) on which noise is generated.
Information on the sound insulation performance of the wall that divides the room receiving the noise and the room on the side receiving the noise (the second room) and the sound absorption performance of the second room, and sets the sound insulation / sound absorption performance input unit 3, a processing unit 2 for attenuating the noise supplied from the recording unit 1 based on the information input to the sound insulation / sound absorbing performance input unit 3, and an amplifier for amplifying the processed noise signal with a predetermined amplification factor 4, a speaker 5 which is a reproduction means which is attached to the experience room 7 and converts the processing noise signal supplied from the amplifier 4 into sound and radiates it as a transmitted sound, and a microphone 6 which is similarly attached to the experience room 7 and picks up noise. It is schematically composed of A indicates an experienced person.

The recording unit 1 uses, for example, a mini-disc device to record noise picked up by a microphone 6 attached to the experience room. Recording may be performed using a computer and a hard disk. In addition, a reproducing device for adding background noise may be separately provided, or main noise and background noise may be synthesized using a computer.

The sound insulation / sound absorption performance input unit 3 inputs the transmission loss of the partition member that partitions the first and second rooms, and determines the amount of noise attenuation corresponding to the transmission loss and the sound absorption volume of the second room. And an input setting unit 31 and a filter coefficient calculating unit 3 for setting the sound insulation performance and the sound absorption performance.
Consists of two. The input setting unit 31 provides information on the sound insulation performance of the wall that partitions the first and second rooms and the sound absorption performance of the specification and interior of the wall of the second room, that is, the sound absorption power on the sound receiving side or the noise source and the noise source. The distance and the distance between the wall and the position where the noise is heard are input. The first and second rooms may be provided with doors, windows, sashes, and the like. In addition, a keyboard for inputting these information by keys is provided.

The filter coefficient calculation unit 32 calculates a filter coefficient to be set in an Nth-order acoustic digital filter, which will be described later, based on the input information on the performance, that is, the attenuation input for each frequency band. Supply to section 2. The processing unit 2 includes an Nth-order acoustic digital filter. The filter coefficient calculated by the filter coefficient calculation unit 32 is set in the Nth-order acoustic digital filter. Attenuation processing is performed on the basis of the amount of attenuation, and output as a processing noise signal.
If necessary, the original sound can be output as it is without processing.

The amplifier 4 amplifies the processing noise signal output from the processing section 2 with a predetermined amplification factor. The loudspeaker 5 is a reproducing means for converting the processed noise signal supplied from the amplifier 4 into a sound and reproducing the sound, and is attached to the experience room 7. The experience room 7 is defined by a soundproof structure such as a soundproof wall, a soundproof ceiling, and a soundproof floor in order to prevent mixing of external noise other than the noise used for the experiment. Further, a television, a stereo, a telephone, or the like may be provided inside the experience room 7 as in the actual room. The microphone 6 is attached to the experience room 7 and picks up noise generated by the experience person.
A noise signal is supplied to the recording unit 1.

Next, the operation of the noise simulation apparatus having such a configuration will be described. First, the microphone 6 picks up noise generated in the daily life, such as the noise emitted by the experience person A in the experience room 7, such as the voice of a speaker, the voice of a telephone, or the sound of a television or a stereo. Then, noise is supplied to the recording unit 1. The recording unit 1 records this noise.

In the sound insulation / sound absorption performance input unit 3, the filter coefficient calculation unit 32 performs an Nth-order acoustic digital filter of the processing unit 2 based on the amount of attenuation input to the input setting unit 31 for each frequency band in advance. Is calculated. Here, the sound insulation / sound absorption performance input unit 3 is an input setting unit 3
1 and a filter coefficient calculator 32.

Next, the processing unit 2 includes a filter coefficient calculating unit 3
After setting the filter coefficient calculated in step 2 to an Nth-order acoustic digital filter, the noise signal supplied from the recording unit 1 is subjected to attenuation processing based on the amount of attenuation for each frequency band, and the processed noise signal is processed. Is output to the amplifier 4.

The processing noise signal is amplified by the amplifier 4 at a predetermined amplification degree. Thereafter, the speaker 5 converts the processing noise signal supplied from the amplifier 4 into a sound, and outputs a transmitted sound. In this way, the experience person A can have a simulated experience of how his or her noise is heard in the adjacent room.

In this embodiment, the experienced person listens to the transmitted sound in the experience room. That is, the experience room and the room for listening to the transmitted sound are the same. However, it is not necessary to make them identical, and a room for listening to the transmitted sound may be separately provided in addition to the experience room, and the transmitted sound may be heard there. Further, the processed noise signal output by the processing unit 2 may be recorded by a recording device, for example, a mini disk device, and may be listened to by headphones or reproduced at another place. In this embodiment, the experience room is provided and the noise is recorded there. However, the noise may be recorded in a recording medium in advance and prepared. Furthermore, a noise simulation may be performed on virtual reality without providing an experience room.

[0018]

According to the noise simulation apparatus of the first and second aspects, by processing the noise, it is possible to experience how the noise is heard by a person in an adjacent room. In particular, the sound absorption performance of the second room as well as the sound insulation performance of the partition member that partitions the first and second rooms was taken into consideration.
Therefore, the experienced person can hear an accurate transmitted sound that is closer to reality. In addition, not only the sound insulation performance of the partition member that partitions the first and second rooms, but also the sound absorption performance of the partition member such as the wall, floor or ceiling, and the interior of the second room,
An assessment can be made. Further, it can be used as a housing partition member or a house sales promotion tool for customers, and can flexibly respond to the determination of the specifications of the second room and the partition member especially.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a noise simulation device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Recording part 2 Processing part 3 Sound insulation / sound absorption performance input part 31 Input setting part 32 Filter coefficient calculation part 4 Amplifier 5 Speaker (reproduction means) 6 Microphone 7 Experience room A Experiencer

Claims (2)

[Claims] 1. A noise generated from a noise source is recorded in a room, and a sound insulation performance component of a partition member for partitioning the room from another assumed room and a sound absorption performance component of the other room are defined. A noise simulation device for attenuating and reproducing the total amount. 2. A recording means for recording a noise generated from a noise source as a signal, and (2) a partition for partitioning a first room on the noise emitting side and a second room on the noise receiving side. Sound insulation / sound absorption performance input means for inputting the sound insulation performance of the member and the sound absorption performance of the second room; (3) processing means for attenuating the performance component input by the sound insulation / sound absorption performance input means; 4) A noise simulation device comprising: a reproduction unit that reproduces, as noise, a signal that has been subjected to attenuation processing by the processing unit.