JP2020064142A - Sound sensing method and sound sensing system - Google Patents

Abstract

To enable hearing of real noise from a room which becomes a noise source by collecting sound in the same room while preventing inclusion of sound propagated to an adjacent room.SOLUTION: An external force is applied from a second room 2 to a boundary 3 toward a box-like anechoic space 4 installed in a first room 1 and having an opening 41 closed at the boundary 3 with the adjacent second room 2, sound propagated from the boundary 3 in the anechoic space 4 is collected by a sound collection unit 5 and recorded by a recording unit (not shown), and controlled by an arithmetic unit (not shown), and the recorded sound is transmitted from a sound source unit 6 in the second room 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to, for example, a sound sensation method and a sound sensation system that artificially reproduce noise of adjacent rooms in an apartment house.

  Traditionally, noise control in each room has been an important issue for multi-family housing. For example, a wall or floor made of a material having a high sound absorbing property or a sound insulating property has been expected to have an effect of making it difficult to hear sounds in adjacent rooms. However, depending on the lifestyle and time of day, it is not easy for residents in the other room to determine whether the noise is noise. Therefore, a mechanism has been proposed in which the resident himself or herself listens to the sound generated by his / her own behavior, and feels whether or not it is noise.

  For example, in Patent Document 1, a sound generated in a room is attenuated and reproduced based on the sound insulation performance of a partition member of a room and the sound absorption performance of a partition member of an adjacent room, thereby reproducing the sound as if it were in an adjacent room. It is disclosed that you can listen to it. The document also discloses that noise is attenuated in consideration of the distance between the noise source during recording and the wall and the distance between the wall during listening and the position where the noise is heard.

JP, 10-39731, A

  However, the technique disclosed in Patent Document 1 causes a difference between the noise recorded in the room and the noise during reproduction. That is, since the noise generated in the room reverberates on the walls and ceiling of the room, the recorded noise includes reverberation. For this reason, the noise subjected to the attenuation processing is different from the noise actually heard from the adjacent room, and therefore Patent Document 1 has a drawback as a noise simulation.

  As described above, in order to reproduce the noise of the room, the environment for collecting the noise is important. On the other hand, when recording the sound of a song or performance, a living room with sound absorbing panels spread over the surface is used. That is, by utilizing the sound absorbing panel living room when collecting the noise of an apartment or the like, an environment for collecting the realistic noise can be constructed, so that a realistic noise environment can be experienced. The inventors have reached the point where they can do it.

  Therefore, an object of the present invention is to collect sound propagating to an adjacent room in the same room so that reverberant sound is not included, and to audition realistic noise from the room that is the source of noise. An object is to provide a sound sensation method and a sound sensation system.

  That is, the sound sensation method according to the present invention is installed from the second room to the boundary toward the box-shaped anechoic space which is installed in the first room and whose opening is closed at the boundary with the adjacent second room. It is characterized by including applying an external force, collecting the sound propagating from the boundary in the anechoic space, and transmitting the sound in the second room.

  It is preferable that the above-described sound sensation method includes collecting and recording the sound and transmitting the sound recorded in the second room.

  In addition, the sound sensation method according to the present invention is installed in the first room and moves from the second room to the boundary toward the box-like anechoic space whose opening is closed at the boundary with the adjacent second room. A first external force is applied, a physical quantity related to the first external force is measured, sound propagating from the boundary in the anechoic space is collected and recorded, and the sound based on the physical quantity related to the first external force is collected. A physical quantity relating to the second external force and a physical quantity relating to the second external force are measured based on the physical quantity relating to the second external force and the physical quantity relating to the sound. It is characterized by including generating a sound correction sound and transmitting the correction sound in the second room.

In the sound sensation method described above, the first room corresponds to the lower floor and the second room corresponds to the upper floor,
It is desirable that the boundary part corresponds to the ceiling of the first room and the floor of the second room.

  In addition, the sound sensation system according to the present invention is installed in the first room and is installed in the box-like anechoic space part whose opening is sealed at the boundary between the adjacent second room and the anechoic space part. A sound source connected to the sound collecting unit and installed in the second room; and the sound collecting unit is provided with the external force applied from the second room to the boundary. The sound propagating in the reverberation space part is collected, and the sound source part emits the sound.

  According to the sound sensation method and the sound sensation system of the present invention, the sound propagating to the adjacent rooms is collected in the same room so as not to include reverberant sound, and a realistic noise is generated from the room that is the source of the noise. You can listen to. That is, one or a plurality of users in the room that is the source of the noise can experience the realistic noise for users in the adjacent room while being in the room that is the source of the noise. Furthermore, the sound sensation method and sound sensation system of the present invention can be applied not only to field tests and performance evaluations of the material at the boundary between the first room and the second room, but also to exhibitions, museums, amusement parks, etc. relating to buildings. Can also be used.

It is a figure which shows notionally an example at the time of (a) sound collection and sound recording of the sound sensation method in one embodiment of this invention, and (b) reproduction. It is a functional block diagram explaining a part of said sound sensation method. It is a figure which shows notionally an example of (a) sound collection and recording, (b) correction, and (c) reproduction | regeneration at the sound sensation method in one Embodiment of this invention. It is a functional block diagram explaining a part of said sound sensation method.

Hereinafter, an example of a sound sensation method (hereinafter, also referred to as “actual sound sensation method”) according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
In addition, in these figures, there is a part where only one part is numbered for a plurality of the same parts. For convenience of explanation, there are some portions in which a predetermined portion and this lead line are indicated by a broken line or an imaginary line (two-dot chain line).

  First, a structure and various devices used for executing the present sound sensation method will be described with reference to FIGS.

As shown in FIG. 1 (a), in the present sound sensation method, for example, a first room 1 located on the lower floor of the housing complex and a second room 2 located on the upper floor of the first room 1 A box-shaped anechoic space portion 4 that seals the opening 41 at the boundary portion 3 is used. The boundary 3 corresponds to the ceiling 31 of the first room 1 and the floor 32 of the second room.
A commercial facility or a vehicle may be used as long as the structure has two adjacent rooms. The first room 1 and the second room 2 may be living rooms that are adjacent to each other on the same floor or that are adjacent to each other in the same room. Each room can be of any size and floor plan. The boundary portion 3 may be, for example, a partition wall of each room, a door for opening each room, or a viewing window in each room. The size and material of the boundary portion 3 may be any.

The anechoic space part 4 is a cubical space with a size that can be stored in the first room 1 and is lined with sound absorbing panels, and has a rectangular opening 41 at the upper end. In other words, the anechoic space part 4 does not have a ceiling. In a state where the anechoic space portion 4 is placed on the floor of the first room 1, the upper edge of the anechoic space portion 4 contacts the boundary portion 3 and the opening 41 is closed. The anechoic space section 4 is installed near the wall of the first room 1.
The anechoic space section 4 may be formed by laying sound absorbing panels inside the living room in the first room. The anechoic space part 4 may have a size that matches the size and layout of the first room. For example, when the first room is 3 LDK, the position and size of the anechoic space part 4 is one of the living rooms. It may be similar in position and size. The anechoic space part 4 may have a door through which a person can enter and exit. The opening 41 may be a through hole provided in the sound absorbing panel forming the anechoic space 4. The anechoic space section 4 may be assembled in the first room 1 or an existing one may be installed in the first room 1.

  The sound collection unit 5 is a microphone installed in the center of the anechoic space unit 4.

The sound source unit 6 is a speaker installed near the ceiling of the second room 2.
In order to improve the sound quality, the sound source unit 6 may be provided at a position other than directly above the anechoic space unit 4 or at a position farthest from the anechoic space unit 4 in the first room 1. Good.

  As shown in FIG. 2, the recording unit 7 is a recording device connected to the sound collection unit 5 and the calculation unit 8 or a general-purpose computer device with a recording function. The recording unit 7 converts the analog data of the recorded sound into digital data such as MP3, or performs calculation via a storage medium such as a CD-R / DVD-R / USB memory storing various digital data or various memory chips. Providing to part 8.

  The calculation unit 8 is a general-purpose computer device connected to the recording unit 7 and the sound source unit 6. The arithmetic unit 8 controls so that the digital data of the recorded sound is converted into analog data automatically after a predetermined time has elapsed or according to an electronic command such as a switch signal and the sound source unit 6 transmits the analog data.

  The recording unit 7, the calculation unit 8, and other various devices may be installed in the first room 1, the second room 2, or a room other than these. The sound collecting unit 5 and the recording unit 7, the recording unit 7 and the calculating unit 8, or the sound collecting unit 5, the recording unit 7 and the calculating unit 8 may be integrally provided. The sound collection unit 5, the recording unit 7, the calculation unit 8, and the sound source unit 6 are connected to the Internet, intranet, extranet, LAN, CATV communication network, VPN, telephone line, mobile communication network, satellite communication. A communication device may be provided for performing communication by network, IEEE 1394, power line carrier, telephone line, IrDA, Bluetooth (registered trademark), 802.11 wireless, mobile phone network, satellite line, terrestrial digital network, or the like.

  The above-mentioned general-purpose computer device corresponds to, for example, an electronic terminal device such as a personal computer or a smart phone, and includes a CPU that performs arithmetic processing of various operations such as execution of an OS / application, a program related to various operations, characters / images, and the like. ROM for storing data, RAM for loading programs and data, input devices such as keyboard, mouse and touch panel, output devices such as screens and audio output speakers, magnetic disks and optical disks for writing and reading electronic data A drive for removable media such as a magneto-optical disk and a semiconductor memory, and a bus for connecting these may be provided.

Next, the flow of the present sound sensation method will be described with reference to FIGS. 1 and 2.
The anechoic space section 4, the sound collection section 5, and the sound source section 6 described above are installed in advance in the first room 1 and the second room 2, and the recording section 7 and the calculation section 8 are provided in the first room 1. And the room other than the second room 2.

First, as shown in FIG. 1A and FIG. 2, the user A in the second room 2 is directly above the anechoic space section 4 toward the anechoic space section 4 in the first room 1. Then, the floor 32 of the second room 2 is stepped on with its legs making a "don don" sound and an external force is applied. The sound caused by the external force propagates through the boundary portion 3 into the anechoic space portion 4 from the ceiling 31 of the first room 1. The sound propagated in the anechoic space section 4 does not reverberate, and the sound collecting section 5 and the recording section 7 collect and record only the propagated sound. The recording unit 7 provides the recorded sound to the calculation unit 8. The calculation unit 8 is in a state in which the sound of the recording unit 7 can be transmitted from the sound source unit 6.
Then, as shown in FIGS. 1B and 2, when the user A moves to a position directly below the sound source unit 6 and presses a switch (not shown), the arithmetic unit 8 controls the sound source unit 6 according to an electrical command from the switch. To do. The sound source unit 6 transmits the sound of the recording unit 7 so that the user A can listen to the noise.
The external force on the floor 32 of the second room 2 may be a shock caused by an object dropped by the user A. The sound collection and recording shown in FIG. 1A and the reproduction shown in FIG. 1B may be performed by two or more users.

  According to such a real sound sensation method, the user A generates the noise generated in the first room 1 on the lower floor by the external force applied to the floor 32 of the second room 2 on the upper floor by the second room. You can actually experience it while you are in 2. That is, since the noise propagating from the ceiling 31 of the first room 1 does not reverberate in the anechoic space 4 and reverberation does not occur, the sound collecting unit 5 and the recording unit 7 can clearly collect and record only the noise. . Further, since the calculation unit 8 controls the recorded noise to be transmitted from the sound source unit 6 with a time difference, the user A can audition only the noise from the sound source unit 6. Therefore, the user A can experience the realistic noise generated by himself / herself in the adjacent room while recognizing the noise source (direction) without moving between the rooms.

Next, with reference to FIG. 3 and FIG. 4, regarding another example of the sound sensation method, only the parts different from the above-described example will be described, and the parts not described have the same structure and operational effects.
It should be noted that components having the same or similar or similar structure and function as those of the parts or parts shown in FIGS. 1 and 2 have a uniform 100 added in FIGS. 3 and 4 for easy reference. Have numbers.

As shown in FIG. 3A, the floor 132 of the second room 102 is provided with a measuring unit 109 that measures a physical quantity related to an external force applied to the boundary 103. The physical quantity relating to the external force is an exciting force (unit: N) that vibrates the boundary portion 103 or a vibration acceleration (unit: m / s ² ) of the boundary portion 103 due to the external force. The measuring unit 109 is a vibrometer or an accelerometer.

As shown in FIG. 4, the measurement unit 109 is connected to the calculation unit 108 and provides a physical quantity related to the measured external force. The calculation unit 108 measures the impulse response, which is a physical quantity related to the sound of the recording unit 107, with a dedicated application based on the excitation force or the vibration acceleration that is a physical quantity related to an external force. Further, the calculation unit 108 generates a corrected sound of the sound of the recording unit 107 based on the physical quantity relating to the new external force and the physical quantity relating to the measured sound. Specifically, the correction sound is generated by a synthetic product (so-called convolution) of a new excitation force or vibration acceleration of the external force and the measured impulse response.
The material of the floor 132 of the second room 102 may be any material.

  Next, the flow of the present sound sensation method will be described with reference to FIGS. 3 and 4.

First, as shown in FIGS. 3A and 4, the measurement unit 109 measures the excitation force or vibration acceleration of the first external force applied by the user B to the floor 132 of the second room 102 in advance. . The calculation unit 108 measures the impulse response of the sound propagated in the anechoic space 104 collected and recorded by the sound collection unit 105 and the recording unit 107 based on the excitation force or the vibration acceleration of the first external force. After that, the anechoic space 104 does not exist in the first room 101.
Next, as shown in FIGS. 3B and 4, the measurement unit 109 measures the excitation force or vibration acceleration of the second external force that the user A newly applies to the floor 132 of the second room 102. To do. The calculation unit 108 generates a correction sound by convolving the excitation force or vibration of the second external force with the measured impulse response.
Then, as shown in FIG. 3C, the user A auditions the corrected sound from the sound source 106.
It should be noted that, instead of the user B, an external force may be applied by a bang machine, a tapping machine or the like.

  According to such a real sound sensation method, the first room 101 can be effectively used. That is, the impulse response of the sound propagated to the anechoic space 104 by the external force applied to the floor 132 of the second room 102 and the external force applied to the floor 132 of the second room 102 in the absence of the anechoic space 104. On the basis of the excitation force or the vibration acceleration of, the correction sound extremely close to the sound that would have propagated to the anechoic space part 104 at that time can be generated ex post facto, so that there is no sound in the first room 101. It is not necessary to permanently install the reverberation space section 104.

1, 101 First room 2, 102 Second room 3, 103 Boundary section 4, 104 Anechoic space section 5, 105 Sound collecting section 6, 106 Sound source section 7, 107 Recording section 8, 108 Arithmetic section 109 Measuring section A and B users

Claims (5)

It is installed in the first room, and an external force is applied to the boundary from the second room toward the box-shaped anechoic space whose opening is sealed at the boundary with the adjacent second room,
Collecting sound propagating from the boundary in the anechoic space,
A sound sensation method comprising: transmitting the sound in the second room. Collecting and recording the sound,
The method according to claim 1, further comprising: transmitting the sound recorded in the second room. It is installed in the first room, and a first external force is applied to the boundary from the second room toward the box-like anechoic space whose opening is sealed at the boundary with the adjacent second room,
Measuring a physical quantity relating to the first external force,
While collecting and recording the sound propagating from the boundary in the anechoic space, measuring the physical quantity of the sound based on the physical quantity of the first external force,
Applying a second external force from the second chamber to the boundary,
Measuring the physical quantity of the second external force,
A corrected sound of the sound is generated based on a physical quantity related to the second external force and a physical quantity related to the sound,
A sound sensation method comprising: transmitting the correction sound in the second room. The first room corresponds to the lower floor and the second room corresponds to the upper floor,
The sound sensation method according to any one of claims 1 to 3, wherein the boundary portion corresponds to a ceiling of the first room and a floor of the second room. A box-shaped anechoic space part installed in the first room and having an opening sealed at the boundary with the adjacent second room,
A sound collecting section installed in the anechoic space section,
A sound source unit connected to the sound collecting unit and installed in the second room;
The sound collecting unit collects the sound propagated in the anechoic space by an external force applied to the boundary from the second room,
The sound sensation system, wherein the sound source section emits the sound.

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