JP2000322069A - Sound field space information transmission/reception method, sound field space information transmission device and sound field reproduction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the reality or feeding of presence of a voice reproduced on the reception side. SOLUTION: This method is so composed that, on the transmission side, a sound field simulation of space corresponding to a scene or the position of a listener is executed and space information on a sound field obtained by the simulation is transmitted together with a sound signal to the reception side, and that, on the reception side, a convolutional operation of the received sound signal is executed based on the received space information on the sound field to generate a regenerative signal and the regenerative signal is supplied to a speaker or a headphone.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for receiving and reproducing sound transmitted along with a video or only a sound on a receiving side, with the reproduced sound having the same level of reality and realism as a real scene. The present invention relates to a device that can be dynamically reproduced as sound corresponding to the position of a listener.

[0002]

2. Description of the Related Art A stereo system is well known as a technique for reproducing a realistic sound field. The stereo method is a method of preparing at least two speakers and arranging them at the front left and right of a listener to reproduce three-dimensional sound, and gives a higher sense of realism as compared with the monaural speaker method. be able to.

One of the techniques for reproducing a more realistic sound field in a two-channel stereo system is a so-called dummy head sound pickup system. The dummy head sound pickup system is a sound pickup system that imitates the human head, a microphone that is placed at the position of the eardrum of a so-called dummy head, and attempts to reproduce the sound field with reality by reproducing with headphones. Is what you do. This method is equivalent to a method of performing a convolution operation on an input signal using a transfer function that takes into account sound wraparound and diffraction effects due to the presence of a human head, which is a head-related transfer function.

On the other hand, OSS (Orth
o Stereophonic System). This means that when the sound picked up by the dummy head is reproduced by speakers arranged in front and left and right of the listener, the reproduced sounds from the left and right speakers are completely separated and are not input to the left and right ears of the listener. In order to make up for the drawback, this is a technique for improving the separation characteristics of sounds emitted from the left and right speakers. In the OSS, signal processing is performed to generate a sound wave in phase opposite to an unnecessary reproduction sound from the speaker at the left and right listening points, and the unnecessary reproduction sound from the speaker is canceled by the interference of the anti-phase sound wave.
The sound from the right (left) speaker is heard only by the right (left) ear.

[0005] Systems using these methods include:
Roland's RSS (Roland Sound Space) and Q developed by Archer Communications
There is sound.

As a technique for realizing a more realistic sound field reproduction in the stereo system, there is a so-called surround system in which sound is generated from other than the front two-channel speakers. The surround method employs a simple method of outputting a signal obtained by delaying the main signal from surround speakers other than the front two channels, and an AC method employing a high-efficiency encoding method corresponding to a multi-channel audio system such as a recent theater movie. -3 method.

Further, several kinds of spatial information of the sound field of a specific hall or stadium are preset, and based on these spatial information selected according to the listener's preference, the reproduced sound of a CD or the like already recorded is convoluted. A sound effect device and an amplifying device capable of enhancing the sense of realism by generating a reproduced signal in response to such a signal have been commercialized by Yamaha Corporation and the like.

[0008]

The two-channel stereo system described above is intended to reproduce the sense of reality at the sound pickup site, but the sense of presence is merely the sense of presence at the sound pickup point. It is not possible to reproduce the realism of points other than points.

[0009] For example, in the recording of a broadcast drama performed using a set in a studio, it is not possible to record a sound with a sense of reality in a real acoustic space as in so-called location recording. For this reason, after recording, for example, if it is a cave scene, it is usual to make a sound by adding a reverb with a long sound to the recorded sound while trial and error, and the receiving side responded to each scene It was not possible to faithfully reproduce the acoustic characteristics existing in the actual acoustic space.

[0010] The surround sound system can provide a high sense of realism due to the spread of sound. However, the surround sound system cannot reproduce the realism of points other than the sound collection point, and also has a sense of realism that does not exist at the sound collection site. The point that cannot be reproduced is the same as the two-channel stereo system.

Further, a conventional technique for improving the sense of realism by convoluting a reproduced sound of an already recorded CD or the like based on spatial information of several preset sound fields,
Although it is possible to reproduce the sense of reality that does not exist at the sound pickup site, the sense of presence is the sense of presence at a specific sound pickup point of a preset hall or stadium, and it is not possible to dynamically change the sound pickup point in real time, Naturally, it was not possible to reproduce sound fields other than presets.

[0012] In a so-called virtual reality (VR), which can perceive an imaginary world constructed using CG technology as if it were real, the operator operates a joystick or the like to reflect a three-dimensional object reflecting the operator's intention. When performing visual observations or the like, it is possible to perform a stereoscopic view according to the movement of the operator for video, but it is not possible to reproduce a dynamic sound field according to the movement of the operator for sound. The same is true for a reproduction sound of a computer game or the like in which a computer reproduces a video reflecting the intention of an operator based on data recorded on a recording medium.

[0013] An object of the present invention is to provide a method for receiving and reproducing sound transmitted along with a video or only a sound at a receiving side, so that the reproduced sound has the same degree of reality and realism as a scene or a listener. To provide a sound field spatial information transmitting / receiving method, a sound field spatial information transmitting apparatus, and a sound field reproducing apparatus which can be dynamically reproduced as a sound corresponding to the position of the sound field.

[0014]

In order to achieve the above object, the sound field spatial information transmitting / receiving method of the present invention performs a sound field simulation of a space corresponding to a scene or a position of a listener on a transmitting side. The spatial information of the sound field obtained by the simulation is transmitted to the receiving side together with the audio signal, and the receiving side convolves the received audio signal based on the spatial information of the received sound field to calculate the reproduced signal. The reproduction signal is generated and supplied to a speaker or headphones.

Further, the sound field spatial information transmitting apparatus of the present invention includes a first transmitting means for transmitting an audio signal, a storing means for storing spatial information of a plurality of sound fields corresponding to each scene in a table form, and At least a second transmitting means for selecting and transmitting spatial information corresponding to a specific scene from the plurality of stored spatial information is provided.

Further, the sound field reproducing apparatus according to the present invention comprises a first receiving means for receiving an audio signal, a second receiving means for receiving spatial information of a selected and transmitted sound field, and a second receiving means. Convolution operation means for performing a convolution operation between the reflected sound time series generated based on the received spatial information and the audio signal received by the first reception means, and the output of the convolution operation means is supplied to reproduce the sound field And at least a speaker or headphones.

Further, the sound field spatial information transmitting apparatus of the present invention is a first transmitting means for transmitting an audio signal, and a storage for storing in a table form spatial information of a plurality of sound fields corresponding to each position of a listener. Means, and at least a second transmitting means for selecting and transmitting spatial information corresponding to the position information of the listener sent from the receiving side from the plurality of stored spatial information, and transmitting the selected spatial information. Is what you do.

The sound field reproduction device according to the present invention further comprises: transmitting means for transmitting the position information of the listener input by the operator to the transmitting side;
The first receiving means for receiving the audio signal, the second receiving means for receiving the spatial information corresponding to the position information of the listener sent from the transmitting side, and the spatial information received by the second receiving means. At least a convolution operation means for performing a convolution operation of the reflected sound time series generated and the audio signal received by the first reception means, and a speaker or a headphone to which an output of the convolution operation means is supplied to reproduce a sound field. It is characterized by the fact that

Further, the sound field spatial information transmitting apparatus of the present invention comprises a first transmitting means for transmitting an audio signal, and simultaneously or time-sequentially transmitting a plurality of sound field spatial information corresponding to each scene in a table form. And at least a third transmitting means for transmitting a spatial information switching signal corresponding to a scene.

Further, the sound field spatial information transmitting apparatus of the present invention comprises a first transmitting means for transmitting an audio signal, and simultaneous or temporal information in a form in which spatial information of a plurality of sound fields corresponding to the position of a listener is tabulated. It is characterized by comprising at least a second transmitting means for transmitting in a sequence.

Further, the sound field reproducing apparatus of the present invention comprises a first receiving means for receiving an audio signal, a second receiving means for receiving spatial information of a plurality of sound fields in a tabulated form, and a second receiving means. Storage means for storing the spatial information received by
Based on the spatial information switching signal transmitted from the transmitting side corresponding to the scene or the position information of the listener input by the operator, predetermined spatial information is stored from a plurality of spatial information stored in the storage means. Selection means for selecting, convolution operation means for performing a convolution operation of the reflected sound time series generated based on the selected spatial information and the audio signal received by the first reception means, and output of the convolution operation means And at least a speaker or a headphone for reproducing a sound field.

Further, the sound field reproducing apparatus of the present invention comprises a first reproducing means for reproducing an audio signal, a second reproducing means for reproducing spatial information of a plurality of sound fields in a tabular form, and a second reproducing means. Storage means for storing the spatial information reproduced by
A predetermined space is selected from a plurality of pieces of space information stored in the storage means based on a spatial information switching signal reproduced from the third reproducing means corresponding to a scene or a listener's position information input by the operator. Selection means for selecting information, convolution operation means for performing a convolution operation of a reflected sound time series generated based on the selected spatial information and an audio signal reproduced by the first reproduction means, and output of the convolution operation means , And at least a speaker or headphones for reproducing a sound field.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on embodiments of the present invention with reference to the accompanying drawings. As described above, according to the present invention, on the transmitting side, a sound field simulation of a space corresponding to a scene or a position of a listener is performed, and spatial information of the resulting sound field is transmitted to a receiving side together with an audio signal. On the receiving side, a convolution operation is performed on the audio signal based on the spatial information of the received sound field to generate a reproduced signal corresponding to the configuration of the sound field reproducing device on the receiving side. By supplying the sound to headphones, it is possible to dynamically reproduce a realistic sound field corresponding to a scene or the like.

FIG. 1 shows that a transmitting side transmits spatial information of a sound field corresponding to each scene such as a drama to a receiving side, and the receiving side performs a convolution operation on an audio signal based on the received spatial information. 1 is a flowchart illustrating an embodiment of a sound field spatial information transmitting / receiving method according to the present invention, which enables a highly realistic sound reproduction linked to a scene.

The method of the present invention will be described step by step with reference to the flowchart shown in FIG. On the transmitting side: The acoustic characteristics of the virtual space corresponding to the scene (the shape of the space,
Materials) are prepared as input data (S1).

2. Using the above input data, some kind of sound field simulation (for example, Japanese Patent Application Laid-Open No. 9-1664)
No. 82, “High-accuracy sound ray tracing device and high-accuracy sound ray tracing method” is executed (S2), and spatial information of a sound field corresponding to each scene is created in advance (S3). This spatial information is stored in the storage device on the transmission side in a form in which a group of data such as the position of the sound source and the listening point from the direction of arrival of each reflected sound to the information of the sound pressure level is tabulated as parameters (S4). ).

3. A spatial information table of a sound field corresponding to the scene is selected from the storage device (S4, S5, S5).
6) Transmit to the receiving side together with the continuous audio signal (S7, S8).

On the receiving side: The spatial information table of the sound field corresponding to the scene transmitted from the transmitting side and the audio signal continuously transmitted are received (S9, S10). From the spatial information table of the received sound field, the number of reflected sound time series corresponding to the number of channels to be reproduced on the receiving side is generated as described below. In the present embodiment, as an example, the reproduction of the sound field on the receiving side is assumed to be reproduced by four speakers as shown in FIG. 2, and an example of the generated reflected sound time series is shown in FIG. Here, the reflected sound time series is generated by dividing the horizontal plane into four directions based on the arrival direction and delay time of the reflected sound described in the spatial information table of the transmitted sound field (FIG. 2). Generate another reflected sound time series (S1).
1).

As shown in FIG. 2, when the reflected sound A having a small time delay and a large level comes from between the two speakers 1, 2, the angle between the reflected sound direction and the speaker 1 is α, and the reflected sound direction is α. Assuming that the angle between the sound direction and the speaker 2 is β, among the levels of the reflected sound A, the speaker 1 receives a signal of β / (α + β) times and the speaker 2 receives a signal of α / (α + β) times. Become. In the case where the reflected sounds B and C having a large time delay and having lowered levels also arrive from the directions shown in the figure, similarly to the reflected sound A, the time delay and the levels of the reflected sounds B and C and the respective arrival directions are obtained. Are generated as the reflected sound time series of the four speakers 1 to 4 respectively receiving the signals in consideration of the above. As a result, the reflected sound time series corresponding to speakers 1 to 4 are respectively shown in FIG.
(A), (b), (c), and (d) are obtained.

5. The audio signal received and continuously transmitted in S10 (see FIG. 1) is convolved with the reflected sound time series generated in the above-described direction (S12), and the convolved signal is supplied to an amplifier (amplifier). The sound field is reproduced from a speaker prepared through the speaker (S13). According to the above,
By selecting and sending the spatial information related to the sound field of the scene for each scene, a sound having a higher sense of reality can be obtained.

In the above, the first embodiment of the method of the present invention has been described with reference to the flowchart shown in FIG. 1. However, by replacing each signal processing on the transmitting side and the receiving side with hardware, the sound field space of the present invention can be obtained. An information transmitting device and a sound field reproducing device can be realized. This is the same for the second embodiment described below.

FIGS. 4 (a) and 4 (b) to 7 (a),
(B), (c), and (d) show a second embodiment to which a sound field spatial information transmitting / receiving method, a transmitting device, and a sound field reproducing device for reproducing a sound field according to the present invention are applied.

In this embodiment, as shown in FIG.
A network is a system that allows an operator in another space to experience a dynamic change in the sound field corresponding to the movement of a sound source or a listener in three continuous spaces A, B, and C as if they were in that space. This is a method implemented via a transmission unit. FIG. 5 shows a flowchart of this embodiment. Here, the listening point means a listener in the virtual space, and the operator distinguishes the two as a person who operates in the real space and listens to the sound. In the following description, as in the description of the first embodiment, the flowchart shown in FIG.
This embodiment (the second embodiment) is based on the flow of the blocks having the same functions as in FIG. 1).
4 (a), 4 (b), 6 (a),
(B) and FIGS. 7 (a), (b), (c) and (d).

On the transmitting side: The sound source signal, the position of the sound source, the position of the listening point, and the acoustic characteristics of the virtual space (space shape, material, etc.) are prepared as input data. In this example, for the sake of simplicity, as shown in FIG. 4A, the types of space are three types of spaces A, B, and C, and the number of sound sources (indicated by ●) is two in A space and two in B space. , C space, the sound source position is fixed, and the listening points are represented by seven points indicated by x, and the space corresponding to each listening point is defined as a zone (S1). Note that, in FIG. 4A, crosses indicate representative points of the zone.

2. Using the above input data, some kind of sound field simulation (for example, Japanese Patent Application Laid-Open No. 9-1664)
No. 82, "High-accuracy ray tracing device and high-accuracy ray tracing method" (S2), and spatial information relating to the reflected sound from the sound source to the listening point is created (S3).
The spatial information related to the reflected sound is stored and stored in a simulation execution / storage device (server machine) in a form in which a group of data from the direction of arrival of each reflected sound to the information of the sound pressure level is tabulated as a group. (S
4). In space A, there are six simulations from sound source 2 and zone 3, in space B there are four simulations from sound source 2 and zone 2, and in space C there are two simulations from sound source 1 and zone 2.

The spatial information on the plurality of reflected sounds stored in the form of a table is selected according to the information on the position of the listening point (generated at S14 in FIG. 5) sent from the receiving side (S15). . Transmission processing S on the transmission side
7, S8 and the receiving processes S9, S10 on the receiving side are the same as in the first embodiment.

On the receiving side: The listening point moves around in three spaces A, B and C on the client machine which is the receiving terminal. In this example, in order to express these spaces three-dimensionally, V in the HTML browser is used.
It is displayed on an RML (Virtual Reality Modeling Language) viewer (S14), and the listening point is moved (walk-through) in the above three virtual spaces (spaces A, B, and C) with a VRML viewer using a mouse or a joystick.
Has been realized.

4. The HTML browser acquires the coordinates and orientation information of the listener's position in the virtual space (VRML) at the time of the walk-through, and transmits this to the transmitting side as table selection information. The transmitting side extracts the zone information of the listening position based on the transmitted information, and selects one from the prepared sound field spatial information table group (S15, S4). Specifically, first, it is determined which zone the listening position belongs to, and a spatial information table having a representative point (indicated by X in FIG. 4A) of the zone to which the listening position belongs as a listening point is selected (S15). ). In FIG. 4A, point 1 is in zone B-1 and point 2 is in zone C-2.
In addition, point 3 belongs to zone A-3. If this zoning is subdivided as shown in FIG. 4B, the sound field information corresponding to the position can be selected more accurately.

Further, the relative positional relationship between the sound source and the listening point and the distance attenuation value of the direct sound emitted from the sound source are calculated.
Here, the attenuation of the direct sound is determined when the distance between the sound source and the listening position is one.
The attenuation value is determined in inverse proportion to the square of the distance based on the value of m. Then, the selected spatial information table including the distance attenuation value is transmitted to the receiving side together with the continuous audio signal (S7, S8).

5. In HTML browsers,
Each time the listening point moves based on the operation of the operator, it is received (S
9) Based on the above-described information, the number of reflected sound time series corresponding to the number of channels to be reproduced is generated (S11).

When the operator changes the direction in the reproduction space of the sound field, it is not necessary to perform the processing for the direction. However, depending on which direction the listener in the virtual space is facing,
The direction of arrival of the reflected sound also changes relatively. Therefore, when the operator always faces the front and changes the direction in which the listener is facing, the relative angle between the direction of the incoming reflected sound and the direction in which the listener is facing is calculated, It is necessary to determine the level distribution of the level to be output to each speaker.

FIGS. 6A and 6B and FIGS.
(B), (c), and (d) show an example of a method for generating a reflected sound time series for each direction when a sound field is reproduced by four speakers. Here, the direction in which the listener faces in the virtual space is counterclockwise θ, and the direction in which the operator faces in the sound field reproduction space is θ = 0 °.

In the cases shown in FIGS. 6A and 6B, since the listener is oriented in the direction of θ, the reflected sound component from the loudspeaker in the reproduction space is calculated from the direction in which the reflected sound is rotated by −θ. It is equivalent to coming. Also, FIGS. 7 (a), (b),
In the cases (c) and (d), the reflected sound represents a virtual space.
In the case of (a) and (c), assuming that the listener arrives from the upper left in the figure, the listener can set the direction of θ = 90 ° (FIG. 7).
(A), (b)) and the direction of θ = 180 ° (FIG. 7)
(C), (d)) shows the output distribution from each speaker when facing each. FIG. 7 (a),
In (b), the speaker 2 receives a signal of β / (α + β) times, and the speaker 3 receives a signal of α / (α + β) times. 7C and 7D, the speaker 3 is used.
Is a signal of β / (α + β) times, and speaker 4 is α / (α +
β) times each signal.

6. The continuously transmitted audio signal received in S10 (see FIG. 5) is convolved with the reflected sound time series for each direction generated as described above (S12), and the convolved signal is amplified by an amplifier. To reproduce the sound field from the speaker (S13).

In the above-described second embodiment of the present invention, the sound source is fixed and does not move.
The present invention can be extended to (1) when only the listening position moves, (2) when only the sound source moves, and (3) when both the listening position and the sound source move.

Here, in the second embodiment of the present invention, the information of the operator on the reproducing side is transmitted to the transmitting side, and the transmitting side reflects the intention of the operator and, for example, displays the video at that time. The spatial information of the sound field obtained by the sound field simulation of the corresponding space is transmitted to the receiving side together with the video and audio information. Then, on the receiving side, the received audio signal is convoluted based on the spatial information of the received sound field to generate a reproduced signal according to the configuration of the sound field reproducing device on the receiving side, and the reproduced signal is output to a plurality of speakers or headphones. By supplying to
The sound field with a sense of reality corresponding to the video can be reproduced dynamically.

According to this, in a virtual reality (VR) or a computer game in which the operator performs a stereoscopic vision reflecting the intention of the operator using a joystick or the like, as well as the video, the audio of the operator is also used. Dynamic sound field reproduction according to the operation can be realized.

In each of the first and second embodiments, the number of speakers in the sound field reproduction space is four. However, the number of speakers is not limited to four. A simulation is performed, a spatial information table of the sound field is created based on the simulation, and the receiving side generates a reflected sound time series corresponding to the number of speakers in the sound field reproduction space. The present invention can be implemented by arranging an arbitrary number of loudspeakers.

In the second embodiment, the VRML viewer is used to display the sound field space on the receiving side. However, other than this, for example, XML (eXteX
nsible Markup Language) can be used on any network.

Although the flow charts shown in FIGS. 1 and 5 do not show that the video signal is transmitted from the transmitting side to the receiving side, the present invention does not provide the sound field reproduction according to the present invention. This also includes the case where the present invention is applied to an audio signal attached to an image or various image media.

In the first and second embodiments of the present invention described above, the spatial information of the sound field required on the receiving side is both selected on the transmitting side. Conversely, the spatial information of all simulation results may be transmitted from the transmitting side to the receiving side simultaneously or in time series, and the receiving side may select the spatial information corresponding to the scene or the position of the listener. . In order to select spatial information corresponding to a scene on the receiving side, it is necessary to transmit a spatial information switching signal corresponding to the scene from the transmitting side.

In the above description, the present invention can be applied to a recording / reproducing system by replacing transmission with recording and receiving with reproduction.

In this case, based on the data recorded on the recording medium, in the case of audio reproduction by a computer in which the computer reproduces an image reflecting the intention of the operator,
It is preferable that the selection of the spatial information of the sound field corresponding to the video to be reproduced is performed by a reproducing device for extracting data from a recording medium.

[0054]

According to the present invention, apart from the conventional audio signal, the sound source, the position information of the listening point and the spatial information of the sound field are transmitted from the transmitting side to the receiving side and, if necessary, from the receiving side to the transmitting side. , It is possible to reproduce the sound field corresponding to the scene on the receiving side or to reconstruct the sound field space corresponding to the user's own movement. Also, this has nothing to do with the number of speakers.

In addition, the present invention can be expected to be applied to the following various fields where high presence sound is required. For example: a. A virtual collaborative studio system in which co-stars can be performed as if by themselves even if they are away from each other b. Amusement system represented by games with great power and high presence c. Teleconferencing system d. System for providing sound information that is easy for people such as visually impaired e. Image training system.

[Brief description of the drawings]

FIG. 1 shows a first method of transmitting and receiving sound field spatial information according to the present invention.
Is shown in the form of a flowchart in the embodiment.

FIG. 2 also shows an example of a speaker arrangement and a method of arriving reflected sounds in the case of reproducing a sound field with four speakers in the first embodiment.

FIG. 3 also shows an example of a reflected sound time series for each speaker when the sound field is reproduced by four speakers in the first embodiment.

FIG. 4 shows a second embodiment of the sound field spatial information transmitting / receiving method according to the present invention.
1 shows a case where the present invention is applied to three continuous spaces.

FIG. 5 is a flowchart showing a processing flow in the second embodiment.

FIG. 6 is a diagram illustrating a relationship between a listener and a direction of arrival of a reflected sound in a virtual space, and a relationship between an operator and a direction of arrival of a reflected sound in a reproduction space, in generating a reflected sound time series for each speaker in the second embodiment. Shows the relationship.

FIG. 7 shows a specific example when θ is 90 ° and 180 °.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroyuki Okubo 1-10-11 Kinuta, Setagaya-ku, Tokyo Japan Broadcasting Corporation Research Institute (72) Inventor Masamichi Otani 1-10 Kinuta, Setagaya-ku, Tokyo 11 Japan Broadcasting Corporation Broadcasting Research Institute (72) Inventor Kazuho Ono 1-10-1 Kinuta, Setagaya-ku, Tokyo Japan Broadcasting Research Institute (72) Inventor Settsu Komiyama 1-kinuta, Setagaya-ku, Tokyo No. 10-11 Japan Broadcasting Corporation Broadcasting Research Institute (72) Inventor Hiroshi Asayama 2-4-10 Higashinakanobu Shinagawa-ku, Tokyo Timeware Co., Ltd.

Claims (9)

[Claims] 1. A transmitting side performs a sound field simulation of a space corresponding to a scene or a position of a listener, and transmits spatial information of the sound field obtained by the simulation to a receiving side together with an audio signal. Wherein a convolution of the received audio signal based on the spatial information of the received sound field generates a reproduced signal, and the reproduced signal is supplied to a speaker or headphones. Space information transmission and reception method. 2. A first transmission unit for transmitting an audio signal, a storage unit for storing spatial information of a plurality of sound fields corresponding to each scene in a tabulated form, and a plurality of spatial information stored in the storage unit. A sound field spatial information transmitting device comprising at least a second transmitting means for selecting and transmitting spatial information corresponding to a specific scene. 3. A first receiving means for receiving an audio signal; a second receiving means for receiving spatial information of a selected and transmitted sound field; and a spatial information received by the second receiving means. Convolution operation means for performing a convolution operation between the reflected sound time series generated in the above and the audio signal received by the first reception means,
And a speaker or headphone to which the output of the convolution operation means is supplied to reproduce the sound field. 4. A first transmitting means for transmitting an audio signal, a storing means for storing spatial information of a plurality of sound fields corresponding to respective positions of a listener in a table form, and a plurality of the stored spatial information A sound field spatial information transmitting device, comprising: at least a second transmitting means for selecting and transmitting spatial information corresponding to the position information of a listener sent from a receiving side from among the above. 5. A transmitting means for transmitting position information of a listener input by an operator to a transmitting side, a first receiving means for receiving an audio signal, and a position corresponding to the position information of the listener transmitted from the transmitting side. A second receiving unit that receives the spatial information, and performs a convolution operation on the reflected sound time series generated based on the spatial information received by the second receiving unit and the audio signal received by the first receiving unit. Convolution means,
And a speaker or headphone to which the output of the convolution operation means is supplied to reproduce the sound field. 6. A first transmission means for transmitting an audio signal, a second transmission means for transmitting spatial information of a plurality of sound fields corresponding to each scene in a tabulated form simultaneously or in time series, and A sound field spatial information transmitting device comprising at least a third transmitting means for transmitting a corresponding spatial information switching signal. 7. A first transmitting means for transmitting an audio signal and a second transmitting means for transmitting spatial information of a plurality of sound fields corresponding to the positions of listeners in a table form simultaneously or in time series. A sound field spatial information transmitting device characterized by at least comprising: 8. A first receiving means for receiving an audio signal, a second receiving means for receiving spatial information of a plurality of sound fields in a tabulated form, and storing spatial information received by the second receiving means. Storage means for performing a predetermined operation from a plurality of pieces of spatial information stored in the storage means based on a spatial information switching signal sent from the transmitting side corresponding to a scene or a position information of a listener input by an operator. Selecting means for selecting spatial information, convolution operation means for performing a convolution operation between a reflected sound time series generated based on the selected spatial information and the audio signal received by the first receiving means, and convolution operation means A sound field reproduction device comprising at least a speaker or headphones that is supplied with the output of (1) and reproduces a sound field. 9. A first reproducing means for reproducing an audio signal, a second reproducing means for reproducing spatial information of a plurality of sound fields in a tabular form, and storing the spatial information reproduced by the second reproducing means. A spatial information switching signal reproduced from the third reproducing means corresponding to a scene or a plurality of spatial information stored in the storing means based on a listener's position information input by the operator. Means for selecting predetermined spatial information from the information, convolution operation means for performing a convolution operation between the reflected sound time series generated based on the selected spatial information and the audio signal reproduced by the first reproduction means, and convolution A sound field reproduction apparatus comprising at least a speaker or headphones to which an output of a calculation means is supplied to reproduce a sound field.