JP2009147814A - Acoustic system and acoustic control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an acoustic system improved in operability, the acoustic system providing an individual acoustic environment for an individual space provided within a prescribed space. <P>SOLUTION: The acoustic system provides an individual acoustic environment for an individual space provided within a prescribed space by performing acoustic processing upon the individual space. The system includes: an operation accepting section for accepting from a listener partition information for partitioning neighboring individual spaces from each other; a display section for displaying thereon the partition information accepted by the operation accepting section together with an image picture corresponding to the prescribed space; and an acoustic control section which sets an individual space on the basis of the partition information accepted by the operation accepting section, and performs acoustic processing upon the set individual space. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an acoustic system and an acoustic control method.

In a vehicle such as an airplane, a railroad, and an automobile, an acoustic system that can provide a different acoustic environment for each seat is known. However, when the listener does not use a headset, leakage sound or noise from other seats becomes a problem. Thus, as a technique for solving such a problem, for example, a technique using a technique (ANC: Active Noise Control) for eliminating noise or the like by superimposing sounds with opposite phases is known (for example, Patent Document 1). reference). According to this technique, it is possible to listen to different sound sources in the same space.
Japanese Patent Laid-Open No. 05-344484 JP 2006-053435 A JP 2007-116363 A Japanese Patent Laid-Open No. 10-32890 Japanese Patent Laid-Open No. 10-32898 Japanese Patent Laid-Open No. 10-32899 Japanese Patent Laid-Open No. 10-32900

  A technique (ANC) is known that eliminates noise and the like by superimposing sounds with opposite phases. According to this technique, it is possible to listen to different sound sources in the same space. On the other hand, when listening to different sound sources in the same space (for example, vehicle space), it is preferable that the acoustic control of each seat can be executed with a simple operation. In particular, in the vehicle space, since the driver of the vehicle may perform the operation, it is preferable that the acoustic control of each seat can be executed with a simple operation from the viewpoint of safety.

  In view of the above problems, an object of the present invention is to provide an acoustic system that provides an individual acoustic environment for an individual space provided in a predetermined space, and that is excellent in operability.

  In the present invention, in order to solve the above-described problem, an acoustic system that provides an individual acoustic environment for an individual space by executing acoustic processing on the individual space provided in a predetermined space is adjacent to the acoustic system. The partition information for partitioning the individual spaces is received, the individual space is set based on the received partition information, and the acoustic process is executed on the set individual space. In addition, the partition information is displayed on the display unit. Thereby, according to this invention, an individual acoustic environment can be provided with respect to an individual space by simple operation of inputting the partition information for partitioning adjacent individual space. Further, since the partition information is displayed on the display unit, the listener can intuitively grasp the current situation in the predetermined space.

More specifically, the present invention is an acoustic system that provides an acoustic environment for a plurality of individual spaces by performing acoustic processing on the plurality of individual spaces provided in a predetermined space. A display unit that displays an image corresponding to the predetermined space, and an operation reception unit that receives partition information for partitioning the space from the listener in the image image corresponding to the predetermined space displayed on the display unit. And an acoustic control unit that sets a plurality of individual spaces in the predetermined space based on the partition information received by the operation receiving unit, and executes acoustic processing on the set plurality of individual spaces, Prepare.

  According to the acoustic system of the present invention, an individual acoustic environment can be provided to an individual space provided in a predetermined space by a simple operation of inputting partition information for partitioning the space. That is, for example, it is possible to make a listener (driver or passenger) listen to different sound sources in a closed space such as a vehicle space. In addition, the set individual space is subjected to acoustic processing such as a technique for eliminating noise or the like by superimposing sounds with opposite phases, which is a concern when listening to different sound sources in the same space. , The effects of sound leakage and noise can be reduced.

  Here, in the present invention, the partition information may be information related to a partition line provided between adjacent individual spaces. In addition, when there is a partition line between adjacent individual spaces, the acoustic control unit is set by setting the individual spaces provided on both sides of the partition line as a reference and different individual spaces. You may make it perform an acoustic process with respect to an individual space. According to the present invention, it is possible to set an individual space with a very simple operation of providing a partition line between the individual spaces. The partition line may be a line that separates adjacent individual spaces, and may be a straight line or a curved line.

  In addition, the area | region divided with the partition line can be handled as one separate space. Therefore, the same sound source can be provided to the individual spaces as the regions partitioned by the partition lines.

  Further, in the present invention, the operation receiving unit and the display unit are touch panels, and the partition information is received by a listener's touch on the touch panel, and the listener's touch trajectory is displayed on the touch panel. As an alternative, the image may be displayed together with the image. According to the present invention, by setting the operation accepting unit and the display unit as a touch panel, it is possible to set an individual space or the like with a simpler operation. In addition, partition information may be displayed on the display unit together with the image, so that the listener can check the current situation in the predetermined space, that is, whether the next passenger is listening to the same sound source. Can be grasped intuitively.

  The acoustic processing includes leakage sound reduction processing for reducing sound leaking from one individual space among adjacent individual spaces to virtual sound source processing for generating a virtual sound source in front of the listener. , At least one of them can be included.

  By performing the leakage sound reduction process on the individual space, it is possible to reduce the leakage sound from the adjacent individual space and provide a higher quality sound. In addition, by executing virtual sound source processing on the individual space, it is possible to provide an individual environment space with a sense of reality in the individual space.

  In the present invention, the predetermined space may be a vehicle space, and the individual space may be provided for each seat in the vehicle space. As described above, the acoustic system of the present invention can set an individual space by a very simple operation. In the vehicle space, it is preferable that the driver and the listener are included, and the acoustic control of each seat can be executed with a simple operation from the viewpoint of safety. Therefore, the acoustic system of the present invention can be suitably used as an acoustic system mounted in a vehicle space.

In addition, this invention is good also as a method of implement | achieving one of the functions mentioned above. That is, the present invention is an acoustic control method for providing an individual acoustic environment for a plurality of individual spaces by performing acoustic processing on the plurality of individual spaces provided in the predetermined space, A display step for displaying an image corresponding to the space, an operation reception step for receiving partition information for partitioning the space from a listener in the image corresponding to the predetermined space displayed in the display step, An invention relating to a method comprising: an acoustic control step of setting a plurality of individual spaces in the predetermined space based on partition information received in the operation receiving step, and executing an acoustic process on the set plurality of individual spaces. It can be. Furthermore, the present invention may be a program for realizing any of the functions described above or a recording medium on which the program is recorded.

  ADVANTAGE OF THE INVENTION According to this invention, it is an acoustic system which provides an individual acoustic environment with respect to the separate space provided in a predetermined space, Comprising: The acoustic system excellent in operativity can be provided.

  Next, an embodiment of an acoustic system of the present invention will be described based on the drawings. In the present embodiment, a case where the acoustic system of the present invention is applied to a vehicle, more specifically, a case where it is incorporated in a vehicle navigation system will be described as an example. However, the present invention is not limited to this, and the sound system of the present invention may be applied to each seat of a movie theater, a concert hall, a train, a bus, and the like.

<Outline configuration>
FIG. 1 shows a schematic configuration of an acoustic system 100 of the present embodiment. The acoustic system 100 according to this embodiment includes an interface (I) that includes an audio reproduction unit 1 that can reproduce CD / DVD, MD, FM / AM, TV, and the like, a DSP 2 (Digital Signal Processor), a display unit 31, and an operation reception unit 32. / F) 3, a control unit 4 including a CPU 41 and a memory 42, a microphone amplifier (MIC amplifier) 5, and a main amplifier 6. The acoustic system 100 according to the present embodiment provides an individual acoustic environment for each sheet, that is, for each individual space. Therefore, in order to realize provision of the individual acoustic environment, in the acoustic system 100 of the present embodiment, the error microphones 7 arranged on each seat of the vehicle 200 are connected to the microphone amplifier 5. The main amplifier 6 is connected to speakers 8 arranged on each seat of the vehicle.

  The audio reproduction unit 1 corresponds to the sound source of the present invention, and reproduces various audio information in response to a listener's request. That is, the audio reproduction unit 1 of the present embodiment can output different audio signals for each sheet. For example, the audio reproduction unit 1 outputs an AM broadcast audio signal or an audio signal related to audio guidance from the navigation device to the driver's seat, and an audio signal such as music stored on a CD or DVD on the rear seat. Can be output.

  The audio signal output from the audio reproduction unit 1 is converted into a digital signal by an A / D converter (not shown), and the audio signal converted into the digital signal is subjected to acoustic processing by the DSP 2 and is not shown. Is converted into an analog signal, and the audio signal is amplified by the main amplifier 6 and output from a predetermined speaker 8. The acoustic processing executed by the DSP 2 is leakage sound control for reducing the sound leaking from the speaker at the other seat. Such acoustic processing is performed based on the leakage sound of other seats acquired by the error microphone 7 arranged on each seat. Therefore, before describing the specific configuration of the DSP 2, the error microphone 7 and the speaker 8 installed in each seat will be described.

FIG. 2 shows a schematic configuration of a vehicle 200 on which the acoustic system 100 of the present embodiment is mounted. As shown in the figure, the vehicle 200 is provided with a closed space 300 (corresponding to a predetermined space of the present invention), and in this space 300, a driver corresponding to the listener of the present invention is provided. Inclusive passengers are allowed to stay. Speakers 8 are installed on each seat in the vehicle 200, and different acoustic environments, that is, individual acoustic spaces can be provided for the individual spaces corresponding to the respective seats.

  In each of the seats such as the driver seat 201, the passenger seat 202, the rear seat left 203, and the rear seat right 204, the speaker 8 is installed near the listener's head toward the listener. The speaker 81 in the driver's seat 201 will be described as an example. The speaker 81 in the driver's seat is composed of a left speaker 81a and a right speaker 81b that are installed toward the listener. The left speaker 81 a and the right speaker 81 b are installed on the seat back portion of the driver seat 201. The speaker 8 is an audio signal supplied from the audio reproduction unit 1 and outputs an audio signal subjected to acoustic processing by the DSP 2 to provide an individual acoustic space for the individual space to the room 300 of the vehicle 200.

  Further, an error microphone 71 of the driver seat 201 is installed in front of the speaker 81 of the driver seat 201. The error microphone 71 includes a left error microphone 71a and a right error microphone 71b. In FIG. 2, the error microphone 7 installed in each seat is provided near the side of the listener's ear, but actually, like the speaker 8, the front side of the seat of the driver's seat 201, for example, Installed in the seat shoulder, headrest, etc. For example, the error microphone 71 installed in the driver's seat acquires leakage sound from other seats (for example, the rear seat), and acoustic processing by the DSP 2 is executed based on this.

  Similarly to the driver's seat 201, the passenger's seat 202, the rear seat at the rear of the driver's seat (hereinafter referred to as the rear seat right 204), and the rear seat at the rear of the passenger seat 202 (hereinafter referred to as the rear seat left 203), respectively. In the vicinity of the listener's head, the left speaker 82a and the right speaker 82b are set toward the listener. In addition, a left error microphone 72a and a right error microphone 72b are installed in front of the left speaker 82a and the right speaker 82b, respectively. As a result, in the acoustic system 100 of the present embodiment, it is possible to provide an individual acoustic space for each sheet (each individual space).

  Next, the DSP 2 will be described. The acoustic processing performed by the DSP 2 is performed by the control unit 4 to reflect the viewer's instruction received from the interface 3. The details of the configuration of the display unit 31 and the operation receiving unit 32 configuring the interface 3 will be described later.

  Here, FIG. 3 shows a functional block diagram centering on the DSP 2. FIG. 3 shows an example in which acoustic processing is performed on the audio signal supplied to the speaker 81 of the driver seat 201. As shown in the figure, the DSP 2 includes a leakage sound reduction filter 21, a virtual sound source filter 22, a rear sound source inverse filter 23, and an auxiliary filter 24. In order to effectively reduce the sound leaked from the speakers 83 and 84 of the rear seats 203 and 204 to the listener of the driver's seat 201, between the speakers 83 and 84 of the rear seats 203 and 204 and the error microphone 71 of the driver's seat 201. The leak sound transfer function P (z) and the error path transfer function C (z) between the speaker 81 of the driver's seat 201 and the error microphone 71 of the driver's seat 201 are dynamically estimated, and the individual sound with a sense of presence is present. In order to provide the environment, the sound output from the speaker 81 of the driver's seat 201 is localized in front of the listener as indicated by the virtual sound sources 81a1 and 81b1.

  As described above, by dynamically estimating the error path transfer function C (z) that easily changes according to the environmental change, the operation system of the leakage noise reduction filter 21 can be improved. The virtual sound source filter 22 generates a sound having a sound image in front of the listener, and the rear sound source inverse filter 23 produces a sound image based on the position of the speaker 81 of the driver's seat 201 close to the listener's ear position. By localizing to the position of the error microphone 71, an individual acoustic environment with a sense of reality can be provided.

The leak sound reduction filter 21 uses the leak sound transfer function P (z) and the error path transfer function C (z) estimated on the basis of the output of the auxiliary filter 24, and outputs from the speakers 83 and 84 of the rear seats 203 and 204. It is a filter that generates a control sound that cancels the leakage sound. The leakage sound reduction filter 21 is configured as an ADF (Adaptive Digital Filter). Note that the audio signal supplied to the leakage sound reduction filter 21 is output from the audio reproduction unit 1.

Here, the calculation procedure of the leakage noise reduction filter 21 will be briefly described. When the leakage sound reduction filter 21 is “Hl (z)”, the auxiliary filter 24 is “S (z)”, the leakage sound transfer function is “P (z)”, and the error path transfer function is “C (z)”, These relationships are represented by Equation 1. The control sound (cancellation sound) generated by the leakage sound reduction filter 21 is expressed as Hl (z) C (z).
S (z) = P (z) + Hl (z) C (z) Equation 1

In Equation 1, two initial values (S1 (z), H1 (z), S2 (z), Hl2 (z)) are input to S (z) and Hl (z), and the cancellation error is minimized. By updating S1 (z) and S2 (z) so as to be, optimal P (z) and C (z) can be estimated. The optimum Hl (z) can be expressed by Equation 2.
Hl (z) = − P (z) / C (z) Equation 2

  The virtual sound source filter 22 is a filter (Q (z)) that receives the audio signal output from the audio reproduction unit 1 and generates a virtual sound field having a virtual sound image in front of the listener of the driver seat 201. Note that the virtual sound field generated by the virtual sound source filter 22 processes the sound signal from the sound reproduction unit 1 as if the sound source is in front of the listener as shown in the virtual sound sources 81a1 and 81b1 in FIG. It is a thing. Further, since the virtual sound source filter 22 is a transfer function obtained in advance based on the previous measurement result, it is possible to obtain a realistic sound field without applying a processing load. Here, in this pre-measurement, sound is output from two speakers installed in front of a dummy head simulating a listener, and an impulse response at the ear position is measured by a microphone installed at the ear position of the dummy head. Is done by. Then, a target transfer function of the target sound field is obtained based on the measurement result, and the obtained target transfer function is defined as Q (z).

The rear sound source inverse filter 23 is a filter defined as an inverse function of the error path transfer function C (z) between the speaker 81 of the driver seat 201 and the error microphone 71 of the driver seat 201, and the speaker 81 of the driver seat 201. A process of localizing the virtual sound field with reference to the position of the error microphone 71 in the driver's seat 201 is performed. As a result, it is possible to correct the rear localization of the sound image caused by the speaker 81 of the driver's seat 201 being installed behind the listener. If the rear sound source inverse filter 23 is “Hb (z)”, Hb (z) can be expressed by Equation 3. Note that a static error path transfer function estimated in advance is used as C (z) in Equation 3.
Hb (z) = 1 / C (z) ... Equation 3

  The auxiliary filter 24 is a filter that receives the outputs of the sound reproduction unit 1 and the error microphone 71 of the driver's seat 201 and performs processing for estimating the leakage transfer function P (z) and the error path transfer function C (z). The output of the auxiliary filter 24 is used for adaptive control of the leakage sound reduction filter 21.

Next, the interface 3 including the display unit 31 and the operation receiving unit 32 will be described. FIG. 4 is a diagram illustrating an example of the interface 3. The interface 3 of the present embodiment is a so-called touch panel, and various operations can be performed by directly touching the display unit 31. That is, the display unit 31 also has the function of the operation reception unit 32. In FIG. 4, the space 31 of the vehicle 200 and the position of the listener are displayed on the display unit 31. In the present embodiment, the touch panel type interface 3 is used, but the present invention is not limited to this. A cursor may be displayed on the display unit, and operation keys for operating the cursor may be provided in the vicinity of the display unit.

(Processing flow)
Next, the process performed by the acoustic system 100 of this embodiment mentioned above is demonstrated. FIG. 5 shows a processing flow performed in the acoustic system 100. The processing described below is realized by the CPU 41 executing a predetermined program stored in the memory 42.

  In step S01, the personal acoustic mode is activated. The personal acoustic mode is activated to provide an individual acoustic environment for an individual space. Specifically, the personal sound mode setting screen is displayed by selecting the personal sound mode from the menu screen. The display example shown in FIG. 4 described above corresponds to this. When the personal acoustic mode is activated, the process proceeds to step S02.

  In step S02, an individual space is set. The setting of the individual space is performed based on a listener's instruction input via the interface 3. That is, the setting of the individual space is executed by the CPU 41 reading information regarding the position of the partition line input to the interface 3. FIG. 6 shows an example of the setting state of the individual space. In the example shown in FIG. 6, the space 300 of the vehicle 200 is partitioned by a linear partition line 90 between the front and the rear. That is, the driver seat 201 and the passenger seat 202 are selected as one individual space, and the rear seat left 203 and the rear seat right are further selected as one individual space. Therefore, the CPU 41 recognizes that the partition line 90 is set between the driver seat 201 and the passenger seat 202 and the rear seats 203 and 204, and the individual spaces arranged on both sides with respect to the partition line 90 are defined. Recognize as different individual spaces. Different sound sources are provided in each individual space. As described above, according to the acoustic system 100 of the present embodiment, the individual space can be set with a very simple operation. When the setting of the individual space is completed, the process proceeds to step S03.

  In step S03, the sound source is set for each of the set individual spaces. The sound source is set by being selected by the listener from the sound source list displayed on the interface 3. That is, the sound source setting is executed by the CPU 41 acquiring a sound source selected via the interface 3. Here, FIG. 7 shows an example of the setting state of the sound source. In the example shown in FIG. 7, AM radio broadcasting is selected as a sound source for the individual space ahead including the driver's seat 201 and the passenger seat 202. On the other hand, the CD is selected as the sound source for the individual space behind the rear seats 203 and 204. Therefore, the CPU 41 sets AM radio broadcasting as a sound source for the front individual space composed of the driver seat 201 and the passenger seat 202, and sets a CD as a sound source for the rear individual space composed of the rear seat 0. . When the sound source setting is completed, the process proceeds to step S04.

In step S04, it is determined whether or not to perform acoustic processing. The determination of whether or not to perform acoustic processing is performed based on the listener's instruction input via the interface 3. In the present embodiment, the CPU 41 determines whether or not to perform acoustic processing based on whether or not an instruction indicating that acoustic processing is not performed is input to the interface 3. Therefore, unless an instruction for not performing acoustic processing is input to the interface 3, acoustic processing is executed for each individual space. Here, FIG. 8 shows an example of a state in which an instruction not to perform acoustic processing is input to the interface 3. In the example shown in FIG. 8, a cross is input in the area indicating the individual space ahead. When the x mark is input to the selected individual area, the CPU 41 determines that acoustic processing is not performed, and switches the display unit of the interface 3. FIG. 9 shows a display state after a setting has been made so that acoustic processing is not performed for the front individual space. As shown in FIG. 9, in FIG. 9, the setting of the individual space ahead (indicated by hatching in FIG. 8) is cancelled. Note that a reset button 33 is provided in the interface 3 of the present embodiment. Therefore, an instruction not to perform acoustic processing may be performed by pressing the reset button 33. When the setting of whether or not to perform acoustic processing is completed, the process proceeds to step S05.

  In step S05, acoustic processing is executed for each of the front individual space and the rear individual space. That is, the CPU 41 controls the leakage sound reduction filter 21, the virtual sound source filter 22, the rear sound source filter 0, and the auxiliary filter 24 to execute processing for reducing leakage sound, processing for localizing a sound source, and the like. As a result, an optimum individual acoustic environment is provided in each individual space.

<Modification>
In the above-described embodiment, the front and rear of the vehicle 200 are separated in setting the individual space. However, the setting of the individual space is not limited to this. FIG. 10 shows a setting state of the individual space of the modification. In the example shown in this modification, in order to set the rear seat left 203 as one individual space, it is partitioned by an L-shaped partition line. Thus, by setting the partition line to be L-shaped, one sheet can be set as one individual space. Therefore, the setting of the individual space is such that the CPU 41 recognizes whether the partition line 90 exists between the sheets, and when the partition line 90 exists between the sheets, the adjacent sheets are separated from each other. What is necessary is just to set as space. In the example shown in FIG. 10, a dot area is displayed in the individual space of the rear seat left 203, and a hatched area is displayed in the other individual spaces, and inter-acoustic processing is executed for each. Therefore, the listener can grasp the state of the space 300 of the vehicle 200 at a glance.

  Moreover, FIG. 11 shows the setting state of the individual space of another modification. In the example shown in this modification, in order to set the driver's seat 201 and the passenger seat 202 as one individual space, the driver's seat 201 and the passenger seat 202 are surrounded by an elliptical partition line. In this way, by setting the partition line 90 to be oval or circular, an arbitrary sheet can be set as one individual space. Even in this case, the CPU 41 recognizes whether there is a partition line between the sheets, and if there is a partition line between the sheets, the CPU 41 recognizes that the adjacent sheets are separated from each other. It can be set as a space (shown as a hatched area in FIG. 11). In the other modification shown in FIG. 11, unlike the above-described embodiment, the acoustic processing is set to be executed only in the region surrounded by the elliptical partition line. FIG. 12 shows a display state after setting only the driver seat 201 and the passenger seat 202 as one individual space. As shown in the figure, a sound source list is displayed so that only the area surrounded by the elliptical partition line 90 is subjected to acoustic processing.

<Effect>
According to the acoustic system 100 of the present embodiment described above, the setting of the individual space in the space 300 of the vehicle 200 can be performed with a very simple operation. Further, when a plurality of individual spaces are set in the space 300 of the vehicle 200, the setting status is displayed on the interface 3, so that the listener can grasp the setting status of the individual space at a glance.

Although preferred embodiments of the present invention have been described, the acoustic system of the present invention is not limited to these, and can include combinations of these as much as possible. In addition, the shape of the partition line at the time of setting individual space is not limited above. Further, by coloring the selected area, it is possible to make the display easier to understand. Furthermore, in the above-described embodiment, the leakage sound reduction processing is adaptive control that is controlled based on the sound acquired by the error microphone. However, the present invention is not limited to this, and the leakage sound reduction process may be performed using a leakage sound reduction function or an error path transfer function acquired in advance by experiments or the like. That is, instead of ADF (adaptive filter), a leak sound reduction filter may be configured using an impulse response measured in advance.

The schematic structure of the acoustic system of this embodiment is shown. The schematic structure of the vehicle by which the acoustic system of this embodiment is mounted is shown. The functional block diagram centering on DSP is shown. It is a figure which shows an example of an interface. The processing flow performed by an acoustic system is shown. An example of the setting state of an individual space is shown. An example of the setting state of a sound source is shown. An example in which an instruction not to perform acoustic processing is input to the interface is shown. The display state after the setting which does not perform an acoustic process about an individual space ahead is made. The setting state of the individual space of a modification is shown. The setting state of the individual space of another modification is shown. The display state after setting only the driver's seat and the passenger seat as one individual space is shown.

Explanation of symbols

1 ... Reproduction processing unit 2 ... DSP
DESCRIPTION OF SYMBOLS 3 ... Interface 4 ... Control part 5 ... Microphone amplifier 6 ... Main amplifier 7 ... Error microphone 8 ... Speaker 21 ... Leakage sound reduction filter 22 ... Virtual sound source filter 23 ... Back sound source reverse filter 24 ... Auxiliary filter 100 ... Acoustic system 200 ... Vehicle 201 ... Driver seat 202 ... Passenger seat 203 ... Passenger seat rear rear seat 204 ... Driving Seat rear seat 300 ... space

Claims (8)

An acoustic system for providing an individual acoustic environment for the plurality of individual spaces by performing acoustic processing on the plurality of individual spaces provided in a predetermined space,
A display unit for displaying an image corresponding to the predetermined space;
In the image corresponding to the predetermined space displayed on the display unit, an operation receiving unit that receives partition information for partitioning the space from a listener;
An acoustic control unit configured to set a plurality of individual spaces in the predetermined space based on the partition information received by the operation receiving unit, and to perform acoustic processing on the set plurality of individual spaces;
An acoustic system comprising: The partition information is information related to a partition line provided between adjacent individual spaces,
When there is a partition line between adjacent individual spaces, the acoustic control unit sets the individual spaces provided on both sides of the partition line as a reference as different individual spaces, and sets the individual spaces The sound system according to claim 1, wherein sound processing is performed on the sound system.   The acoustic system according to claim 1, wherein the same sound source is provided in the individual space as an area partitioned by the partition line.   The operation accepting unit and the display unit are touch panels, accepting the partition information by a listener's finger touch on the touch panel, and using the touch image of the listener as a partition information on the touch panel together with the image image The acoustic system according to claim 1, wherein the acoustic system is displayed. For the acoustic processing,
Leakage noise reduction processing for reducing sound leaking from one individual space of adjacent individual spaces to another individual space;
Virtual sound source processing for generating a virtual sound source in front of the listener;
The acoustic system according to any one of claims 1 to 4, wherein at least one of them is included.   The acoustic system according to any one of claims 1 to 5, wherein the predetermined space is a vehicle space, and the individual space is provided for each seat in the vehicle space. An acoustic control method for providing an individual acoustic environment for a plurality of individual spaces by performing acoustic processing on the plurality of individual spaces provided in a predetermined space,
A display step of displaying an image corresponding to the predetermined space;
In the image corresponding to the predetermined space displayed in the display step, an operation receiving step of receiving partition information for partitioning the space from a listener;
An acoustic control step of setting a plurality of individual spaces in the predetermined space based on the partition information received in the operation receiving step, and executing an acoustic process on the set individual spaces;
An acoustic control method comprising: The partition information is information related to a partition line provided between adjacent individual spaces,
In the acoustic control step, when there is a partition line between adjacent individual spaces, the individual spaces provided on both sides thereof are set as different individual spaces with reference to the partition line, and the set individual spaces The sound control method according to claim 7, wherein sound processing is performed on the sound.

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