JP2003304515A - Voice output method, terminal device, and two-way interactive system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a voice output method or the like provided with a structure capable of realizing an interactive environment full of presence in the interaction with a remote place implemented through a prescribed transmission means. <P>SOLUTION: A display position (O<SB>2</SB>) of an image of an opposite interlocutor (800a, 800b) displayed on a monitor screen (8) is specified, a deviation amount (L1) from a display reference position (O<SB>1</SB>) on the monitor screen (8) is calculated and a volume of the voice of the opposite interlocutor stereophonically outputted from speakers (920a, 920b) is adjusted depending on the deviation amount (L1). <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlocutor voice output method and the like applicable to a two-way interactive system for realizing remote dialogue via a terminal device connected by a predetermined transmission means. .

[0002]

2. Description of the Related Art In recent years, a two-way interactive system has been constructed which realizes a remote dialog for transmitting and receiving text data and video data between remote sites via transmission means such as English conversation learning and counseling. In such a remote dialogue, not only the exchange of text data and the image of the other party's interlocutor, but also the more intimate contact in the state where the interlocutors indirectly see each other through the image of the other party's interlocutor is displayed. As a system for realizing a dialogue environment, for example, Japanese Patent No. 307467
No. 7 proposes a two-way interactive system that enables remote communication while keeping the line of sight.

[0003]

DISCLOSURE OF THE INVENTION As a result of detailed examination of a conventional interactive dialog system, the inventors have found the following problems. In other words, in a one-on-one remote dialogue that is performed while looking at the image of the other party
The interlocutor displays the image of the other party's interlocutor at any position on the monitor screen that he / she faces, while the speaker (headphone or earphone speaker may be installed) is installed in a predetermined direction in advance to provide a predetermined volume balance. The voice of the other party's interlocutor was being output. In this way, the output direction of the voice is constant regardless of the change in the display position of the other-side interlocutor image on the monitor screen, so that the interlocutor facing the other-side interlocutor image is There was a problem that the user felt discomfort during the conversation accompanying the movement and could not concentrate on the conversation.

Also, when a plurality of partner dialog images are displayed on the monitor screen (the display positions of the partner dialog images are different on the monitor screen), the speaker whose output direction is fixed in advance is fixed. Since a large amount of voice is output, even in such a one-to-many remote location dialogue, there is a problem that each interlocutor feels discomfort during the dialogue and cannot concentrate on the dialogue.

The present invention has been made to solve the above problems, and enables a more realistic dialogue environment to be realized in a remote dialogue performed through a predetermined transmission means. Audio output method with a structure for
An object of the present invention is to provide a display device that realizes it, a two-way interactive system including the display device, a computer program that executes the display method, and a recording medium on which the computer program is recorded.

[0006]

A voice output method according to the present invention provides a more realistic presence in a two-way interactive system for realizing a remote dialogue between terminal devices connected via a predetermined transmission means. Create a rich dialogue environment. here,
At least one of the terminal devices in the two-way interactive system includes a display unit for displaying the image of the other party's interlocutor on the monitor screen, and at least a pair of voice outputs for stereo-outputting the voice of the other party's interlocutor. And a control unit for individually controlling the volume control of each of the audio output units.

In particular, the control unit specifies the display position of the image of the other party's interlocutor displayed on the monitor screen of the display unit, and the display position of the specified image of the other party's interlocutor on the monitor screen. Calculate the amount of deviation from the predetermined display reference position,
Then, the volume distribution of the other party interlocutor voice output from each of the audio output units is adjusted according to the detected amount of deviation of the display position of the other party interlocutor image.

The voice output section includes a speaker arranged so as to be substantially symmetrical with respect to the image of the other party's interlocutor displayed on the monitor screen of the display section. At this time, the speaker may be arranged in any of the upper, lower, left and right directions with respect to the image of the other party's interlocutor, and includes the speaker built in the display unit. The audio output unit may include a headphone speaker or an earphone speaker.

A voice output method (a voice output method according to the present invention) realized by a terminal device having the above-mentioned configuration is such that the display position of the image of the other party's interlocutor displayed on the monitor screen of the display unit is displayed. The calculated amount of deviation of the specified display position of the other party's interlocutor image from a predetermined display reference position on the monitor screen corresponds to the detected amount of deviation of the display position of the other party's interlocutor image. Then, the volume distribution of the other party interlocutor voice output from each of the pair of voice output units is adjusted.

The audio output method as described above may be a program executed by a computer or the like. In this case, the program may be distributed via a network whether wired or wireless. It may be stored in a recording medium such as a CD, a DVD, or a flash memory.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a voice output method, a terminal device and the like according to the present invention will be described in detail below with reference to FIGS. In the description of the drawings, the same parts will be denoted by the same reference symbols and redundant description will be omitted.

A terminal device for realizing the voice output method according to the present invention realizes a remote dialogue between the terminal devices connected via a predetermined transmission means, for example, Japanese Patent No. 30746.
It is applicable to the interactive system described in No. 77.

First, the bidirectional interactive system to which the voice output method and a terminal device that implements the voice output method are applicable will be described. Note that this two-way interactive system is a system that realizes remote dialogue in a state where the line-of-sight matches, but the voice output method and the terminal device that realizes it have a configuration in which the line-of-sight cannot be matched between the interlocutors. However, a two-way interactive system that displays the image of the interlocutor can be applied.

FIG. 1 is a logical configuration diagram showing the entire interactive interactive system that enables line-of-sight matching between interlocutors at remote locations. This system realizes a two-way dialogue between an interlocutor 3A (first interlocutor) at point A (first point) and an interlocutor 3B (second interlocutor) at point B (second point). It is a system that does. In particular, this system is a counseling system that establishes intimate relationships of trust even with interlocutors in remote areas and enables close communication, and a system that aims at home learning. , Is supposed to be a counselor such as a psychologist. Therefore, this system has various functions and configurations so that these counselors can provide information necessary for counseling and an ideal counseling environment.

Specifically, at the point A, (a) a chair 4A (having a height adjusting mechanism 40A) on which an interlocutor 3A (for example, a counselor) sits, and (b) a table 2A to which the interlocutor 3A faces. (C) The terminal device 20A having a mechanism for matching the line of sight between the interlocutors via the transmission means 27 is installed, and the interlocutor 3A is isolated by the partition 22A. On the other hand, at point B, (a) Interlocutor 3B
A chair 4B on which (for example, a client who receives counseling) sits (having a height adjusting mechanism 40B), (b) a table 2B to which the interlocutor 3B faces, and (c) a transmission means 27.
A terminal device 20B having a mechanism for matching the line of sight between the interlocutors is installed via the interlocutor, and the interlocutor 3B is isolated by a partition 22B. Here, the transmission means 27 uses the terminal device 20A at the point A and the terminal device 2 at the point B.
Optical fiber transmission line 31 that enables large-capacity transmission in order to enable transmission / reception of image information and audio information to / from 0B.
It includes a (main transmission line) and a satellite communication transmission line 32 (a backup transmission line). The transmission means 27 may be wired or wireless. In addition, the transmission means includes a network such as a telephone line network that has already been laid, and further has an electronic bulletin board system (BBS: B
ulletin Board System) is also included.

At point A, the chair 4A described above functions to define the position of the interlocutor 3A. This chair 4A is preferably fixed in order to keep a constant distance from the display unit 21A of the terminal device 20A. However, even if the chair 4A is not fixed, the chair 4A can be installed by installing the table 2A on the interlocutor 3A and the display unit 21A.
It becomes possible to maintain a constant distance from the display unit 21A (the fact that the existence of the table 2A serves as a reference for the psychological distance of the interlocutor 3A has been confirmed). The configuration of the terminal device 20B at the point B where the other party's interlocutor 3B (for example, a person who receives counseling) is the same.

At the point A, the terminal device 20A (1)
A monitor TV arranged on the table 2A for displaying the image of the interlocutor 3B based on the image information transmitted from the terminal device 20B at the point B via the transmission means 27.
A display unit 21A provided with 1A, (2) an image pickup unit 6A for taking in the image of the interlocutor 3A picked up by the CCD camera 5A as image information, and transmitting it to the terminal device 20B at the point B, (3 ) A voice output unit 23A for outputting the voice of the interlocutor 3B based on the voice information transmitted from the terminal device 20B at the point B via the transmission means 27.
(Speaker), and (4) a voice input unit 24A (microphone) for collecting the voice of the interlocutor 3A as voice information and transmitting it to the terminal device 20B at the point B. In addition, this system, as a counseling system, realizes more detailed communication.
Input a character or a graphic, display the input character or graphic on the display unit 21A, and transmit the character or graphic information to the terminal device 20B at the point B as a character or graphic information (keyboard, pointing, An image processing device 26A (including a control unit) which is provided between each component and the transmission means 27 and which performs signal processing, transmission control, video data editing work, etc. With. The terminal device 20B at the point B is also configured in the same manner as the terminal device 20A at the point A, and specifically, the display unit 21B and the CCD.
Imaging device 600 including camera 5B and imaging unit 6B
B, a voice output unit 23B, a voice input unit 24B, a character / graphics input unit 25B, and a video processing device 26B.

Further, the terminal devices 20 at the points A and B
In A and 20B, the configurations of the imaging devices 600A and 600B (imaging means) will be described. For convenience of description, when referring to components common to the terminal devices 20A and 20B at points A and B, for example, the imaging device 60
The description will be made by omitting the letters A and B that distinguish each point like 0. In addition, unless specifically described, the terminal device 20A at the point A is described in principle, and the terminal device 20 at the point B having a common configuration is described.
Overlapping description of B is omitted.

The image pickup device 600 includes a micro CCD camera 5 (5A) which is an image pickup section, and a support mechanism 10 (FIG. 2) for installing the CCD camera 5 at a predetermined position in a supported state.
Reference unit) and an image pickup unit 6 (6A) for controlling the CCD camera 5. The monitor TV 1 (1A) is placed on the table 2 (2A), and the interlocutor 3
(3A) is a chair 4 (4) provided with a height adjusting mechanism 40 (40A) placed at a distance L (m) from the monitor TV 1.
Sitting in A). This distance L (LA) is set to 0.5 m or more and 5 m or less. An outer diameter of 20 mm or less and a length of about 100 mm between the interlocutor 3 and the monitor TV 1 to be photographed.
A cylindrical microminiature CCD camera 5 is provided. Further, the CCD camera 5 is installed so that its imaging direction is directed to the interlocutor 3 who is imaged. Then, the image of the interlocutor 3 imaged by the camera 5 is transmitted as image information from the imaging unit 6 to the other interlocutor side (transmitted to the terminal device 20B at the point B via the transmission means 27).
Depending on the interlocutor, the space between the display unit 21 and the interlocutor may be weakened. Therefore, in order to cope with such a situation, it is preferable that the CCD camera 5 has a deep focal depth.

Next, a specific installation position of the microminiature CCD camera 5 will be described with reference to FIG.

First, the image pickup unit 6 of the image pickup apparatus 600 is installed on the display section 21 for displaying the transmitted image of the other interlocutor. An image of the interlocutor himself / herself taken by the camera 5 is captured in the body of the imaging unit 6 (captured by the imaging unit 6 via the camera cable 50)
In addition to the changeover switch 6a, various adjustment switches 6b are provided for switching between the display of 1) and the display of the transmitted image of the interlocutor 3B. The switch 210 includes a power switch for turning on / off the power of the monitor TV 1. The CCD camera 5 is installed by a support mechanism 10 (robot arm) at a predetermined position in front of the monitor screen 8 on which the transmitted image 9 of the interlocutor 3B is displayed. The monitor screen 8 can be sufficiently used if it has a size of about 4 inches.

Specifically, the CCD camera 5 is at a position forward w (cm) from the monitor screen 8, and the monitor screen 8
It is arranged near the head 9a of the interlocutor image 9 displayed in FIG.
The central axis of the cylindrical CCD camera 5 is located at a position h (cm) above the eye position of the interlocutor image 9 shown by the dotted line.

As described above, since the microminiature CCD camera 5 is located near the head above the eye position of the interlocutor image 9 displayed on the screen 8 of the large monitor TV 1, it is particularly suitable for two-way dialogue. No trouble will occur. For example, the CCD camera 5 is provided above the eye position (the position shown by the dotted line in the figure) of the interlocutor image 9 displayed on the screen 8 at h = about 10 (cm), and between the monitor TV 1 and the interlocutor 3. In the case of the system configuration in which the distance L is set to about 2.5 (m), the parallax angle is 2.3 °.
It is possible to sufficiently fall below the detection limit parallax angle of 3 ° (the interval w between the monitor screen 8 and the CCD camera 5 is 10 (c
Even if there is about m), there is no particular effect on the variation of the parallax angle). That is, if the eyes of the other party (the eyes of the image of the other interlocutor 3B displayed on the monitor screen 8) can be clearly seen at the time of line-of-sight matching, even if the microminiature camera 5 is provided near the head, the monitor It has been confirmed that if the screen 8 of the TV 1 is large, there is almost no hindrance to the interactive dialogue. As a result of the experiment, the size of this screen 8 is 35 cm in width and 26 cm in height.
It has also been confirmed that good two-way dialogue can be realized if the size is at least a certain level. It should be noted that if mutual interlocutors are acquaintances, there is a result that there is a tendency that there are few psychological obstacles even if the size of the screen is small, and it is advisable to properly use the screen size according to the application.

Further, the parallax angle will be described with reference to FIG. In this specification, the parallax angle means, as shown in FIG. 3, the line of sight of the interlocutor 3 to be photographed, which is directed to the interlocutor image 9 displayed on the monitor screen 8, and the direction of the CCD camera 5. The angle θ formed by the line of sight of the interlocutor 3 is defined. In other words, it means the shift angle of the installation position of the CCD camera 5 with respect to the line of sight of the interlocutor 3. In addition, the line-of-sight matching here means the 4th Japan Electrical Engineers Union Meeting (N)
o. 1998), it means that the unnaturalness due to the installation position of the CCD camera 5 is below the allowable limit. Quantitatively, the parallax angle is 4.5 ° or less in the left and right direction (both temple sides of the image 9 with respect to the eye center A of the interlocutor image 9), and 12 ° directly above (with respect to the image center A, The head 9b side of the image 9) and 8 ° below (the body side of the image 9 with respect to the image center A) or less are within the line-of-sight matching range. Of course, the smaller the parallax angle, the better, and the detection limit is 3 ° or less in the horizontal and vertical directions. Therefore, the area in which the CCD camera 5 can be installed is the conical area shown in FIG. In addition,
This conical area is the center point A of the interlocutor image 9 displayed on the monitor screen 8 and the eye 30 of the interlocutor 3 (in this embodiment, the center of both eyes of the interlocutor image 9 is the center point of the interlocutor image 9). Defined as A), the line of sight 31 of the interlocutor 3 connecting
It is defined by the line-of-sight matching region 9b on the monitor screen 8 and the position of the eye 30 of the interlocutor 3 when the monitor is separated by a predetermined distance L (m). If the size of the interlocutor image 9 displayed on the monitor screen 8 is small, the CCD camera 5 and the head of the interlocutor image 9 do not necessarily have to overlap each other. Rather, the head of the interlocutor 9 is hidden by the CCD camera 5 and becomes difficult to see. As described above, the condition for line-of-sight matching is that the CCD camera 5 and the eyes of the interlocutor image 9 are present in the area with a parallax angle of 3 °, and specifically, about 3 cm at a position 50 cm away from the screen.
The degree (h in FIG. 2). Therefore, within this range, the line-of-sight matching state is maintained even if the CCD camera 5 and the head of the interlocutor image 9 are displaced. This interlocutor image 9 and CC
The D camera 5 can be displaced by, for example, adjusting the image display position on the monitor screen 8 or adjusting the support portion of the CCD camera 5 to change the position of the CCD camera 5 itself.

FIG. 5 is a diagram showing the configuration of the terminal device according to the present invention. This terminal device includes a display unit 21 such as a monitor.
(Corresponding to the display units 21A and 21B in the interactive interactive system shown in FIG. 1) and the video processing unit 26 (the video processing device 26 in the interactive interactive system shown in FIG. 1).
A, 26B), an external recording device 700, a pointing device 800 such as a mouse, and a pair of speakers 910a and 910b (audio output unit) as audio output means.
Headphones 900 having In particular, the video processing unit 26 receives the image information from the image pickup unit 6 included in the image pickup unit and transmits / receives the image information of the other party's interlocutor via the transmission unit 27.
(I / O in the figure), a control unit 263 for performing an image display operation and a volume control operation (a voice output method according to the present invention), image information to be transmitted and received, and the interlocutor himself prepared in advance. Database 262 (D / B in the figure) for storing character data, video data, etc., display unit 21
A drawing unit 264 that displays a predetermined pattern in accordance with an instruction from the control unit 263, and the acquisition of position information from a pointing device 800 such as a mouse or the external recording device 7.
Data input / output unit 265 that enables data exchange with 00
(I / O in the figure) and a pair of speakers 910a and 910
A sound source controller 266 for outputting sound corresponding to the image information is provided to each of b. The external recording device 700 includes, for example, a magnetic tape, a CD, an optical disk, a hard disk, a DVD, a flash memory and the like.

Specifically, the I / O 2 is transmitted via the transmission means 27.
When 61 receives the image data and the voice data of the other party's interlocutor, the control unit 263 carries out the voice output method according to the present invention together with the display operation of the other party's interlocutor image. That is, the control unit 263 first causes the drawing unit 264 to display a window on the monitor screen 8 of the display unit 21 at a position previously designated by the mouse 800 or the like.
Display control of the received image of the other party's interlocutor is performed. In the display control by the control unit 263, the display position is set so that the head above the eyes of the other-side interlocutor image and the CCD camera (imaging unit) 5 previously installed in front of the monitor screen of the display unit 21 overlap. Is adjusted, and the line-of-sight matching state via the transmission means 27 is secured.

The display state of the image of the other party's interlocutor is
It is shown in FIG. A pair of speakers 920 are provided on both sides of the display unit 21 to enable stereo output of sound.
When a and 920b are arranged, the reference display position of the window 800a in which the image of the interlocutor is displayed must be on the reference line CL on the monitor screen 8.
In other words, the center O _{1 of the} window 800a is the reference line C.
It is located on L. At this time, the control unit 263 does not cause a deviation in the X-axis direction on the monitor screen 8 between the reference line CL and the window center O ₁ , so that the left-side speaker 920a and the right-side speaker 920b with respect to the sound source controller 266. It is instructed to output the sound to each speaker with the volume ratio of 50% and 50%.

On the other hand, FIG. 6B shows a state in which the window 800b for displaying the image of the other party's interlocutor is arranged on the right speaker 920b side rather than on the reference line CL. In such a display state, the control unit 263 first calculates the distance between the displayed window 800b and the reference line CL, that is, the distance between the center O _{2 of the} window 800b and the reference line CL as the deviation amount L1, The volume distribution of the right speaker 920b and the left speaker 920a is determined according to the amount of deviation. For example, as shown in FIG. 6B, when the window 800b displaying the image of the other party's interlocutor is displayed from the right speaker 920b, the control unit 263.
To the sound source controller 266, the left speaker 92
A volume adjustment instruction is given so that the volume of the right speaker 920b becomes louder than 0a (for example, 70% for the right speaker 920b and 30% for the left speaker 920a).

As described above, the control unit 263 controls the drawing unit 2
The left and right speakers 920a and 920 are displayed according to the window display position of the image of the interlocutor on the other side displayed on the monitor screen 8 by 64.
b The sound source controller is controlled to adjust the volume of each.

In the above-mentioned volume adjusting operation, a one-to-one interactive dialogue has been described, but the voice output method according to the present invention can be sufficiently applied to a one-to-many interactive dialogue. FIG. 7 is a diagram for explaining another volume adjusting operation in the audio output method according to the present invention. In FIG. 7, two other party interlocutors who are engaged in simultaneous dialogue are displayed on the monitor screen 8 as windows. Also in this case, a pair of speakers 920a and 92a are provided on both sides of the display unit 21.
0b is arranged, and CL is a reference line on the monitor screen 8 in which the volume distribution of each speaker is set to 50%.

The control unit 263 first determines the first partner interlocutor.
The window 800c in which the image is displayed and the reference line CL
, The center O of the window 800c₃And criteria
The amount of deviation L2 from the line CL is calculated, and the second opponent
Window 800d displaying the image of the interlocutor and the reference line
Distance from CL, that is, center O of window 800d _Four
The deviation amount L3 between the reference line CL and the reference line CL is calculated. And control
The unit 263 informs the sound source controller 266 of these information.
The sound volume is distributed according to the deviation amounts L2 and L3.
Instruct to output voice. For example, the window shown in FIG.
When the window is displayed,
Control unit 263, the controller 263
On the other hand, regarding the voice of the first other party's interlocutor, the left speaker 9
The volume distribution of 20a is made larger than that of the right speaker 920b.
(For example, the volume of the left speaker 920a is adjusted.
Is set to 70% and the volume of the right speaker 920b is set to 30%.
Fixed). On the other hand, the control unit 263 controls the second partner dialogue
2nd phase to the sound source controller 266 if
About the voice of the hand side interlocutor Volume of the right speaker 920b
Adjust distribution to be greater than left speaker 920a
(For example, the volume of the right speaker 920b is 70%,
The volume of the side speaker 920a is set to 30%).

The volume control operation described above has been described for an embodiment in which a pair of speakers 920a 920b are arranged on both sides of the display section 21 as shown in FIGS. 6 and 7. The arrangement is not limited to this. For example, the pair of speakers may be a headphone speaker or an earphone speaker, as shown in FIG. Further, it may be a speaker built in the display unit 21 itself. In the case of built-in speakers, if they are substantially symmetrical with respect to the reference line CL, they may be arranged side by side below the monitor screen 8, for example. Further, they may be arranged above and below with the monitor screen 8 interposed therebetween. The arrangement is not particularly limited as long as it is arranged so that an interlocutor located in front of the monitor screen 8 can perceive it as stereo sound.

[0033]

As described above, according to the present invention, the deviation amount of the display position of the image of the other party's interlocutor displayed on the monitor screen from the display reference position on the monitor screen is calculated, and the deviation is calculated. Since the volume of the voice of the other party's interlocutor output from each speaker for stereo output is adjusted according to the amount, the interlocutor facing the monitor screen can listen to and listen to the sound that matches the display position of the image of the other party's interlocutor. This has the effect of making it possible and providing a more realistic remote dialogue.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a two-way interactive system that realizes line-of-sight matching between remote places via transmission means.

FIG. 2 is a diagram showing the image pickup device shown in FIG. 1, and a diagram for explaining a method of installing a CCD camera for line-of-sight matching.

FIG. 3 is a diagram illustrating a parallax angle.

FIG. 4 is a diagram showing an area where a CCD camera is to be installed.

FIG. 5 is a block diagram showing a configuration of a terminal device according to the present invention.

FIG. 6 is a diagram for explaining a volume adjusting operation in the audio output method according to the present invention.

FIG. 7 is a diagram for explaining another volume adjusting operation in the audio output method according to the present invention.

[Explanation of symbols]

8 ... Monitor screen, 21 (21A, 21B) ... Display section, 3
(3A, 3B) ... Interlocutors A, B, 5A, 5B ... CCD camera, 6 (6A, 6B) ... Imaging unit, 600 (60)
0A, 600B) ... Imaging device, 26 (26A, 26B)
... video processing device, 262 ... D / B, 263 ... control unit, 8
00 ... Mouse (pointing device), 900 ...
Headphones, 910a, 910b, 920a, 920b
… Speaker.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroo Matsuda             Sumitomoden 1 Taya-cho, Sakae-ku, Yokohama-shi, Kanagawa             Ki Industry Co., Ltd. Yokohama Works (72) Inventor Hisao Maki             Sumitomoden 1 Taya-cho, Sakae-ku, Yokohama-shi, Kanagawa             Ki Industry Co., Ltd. Yokohama Works F term (reference) 5C064 AA01 AC02 AC06 AC12 AC16                       AC22                 5D062 CC02

Claims (8)

[Claims] 1. A terminal device comprising at least a pair of audio output units prepared for stereo-outputting the voice of the other party's interlocutor transmitted through a predetermined transmission means together with the image of the other party's interlocutor. A voice output method for outputting the voice together with the image of the other party dialogue person, wherein the display position of the image of the other party dialogue person displayed on the monitor screen of the display unit is specified, and the identified other party dialogue A displacement amount of the display position of the person image with respect to a predetermined display reference position on the monitor screen is calculated, and in correspondence with the detected displacement amount of the display position of the other party dialogue person image, from each of the voice output units. A voice output method for adjusting the volume distribution of the voice of the other party's interlocutor to be output. 2. The voice output method according to claim 1, wherein each of the pair of voice output units outputs from the pair of voice output units in accordance with a shift amount of a display position of the interlocutor image of the other party displayed on the monitor screen of the display unit. A terminal device comprising a control unit for adjusting the volume distribution of the voice of the other party's interlocutor output. 3. A terminal device in a two-way interactive system that realizes a remote dialogue by transmitting and receiving the image of the other party's interlocutor through a predetermined transmission means, and the image of the other party's interlocutor is displayed. A display unit for displaying on the monitor screen, at least a pair of voice output units for stereo-outputting the voice of the other-side interlocutor, and the other-side interlocutor image displayed on the monitor screen of the display unit. The display position of the other party interlocutor image is detected by calculating the displacement amount of the specified display position of the other party interlocutor image with respect to a predetermined display reference position on the monitor screen. And a control unit that adjusts the volume distribution of the other party's interlocutor's voice output from each of the voice output units according to the amount of deviation. 4. The voice output unit includes a speaker arranged so as to be substantially symmetrical with respect to the image of the other party's interlocutor displayed on the monitor screen of the display unit. The terminal device according to 2 or 3. 5. The terminal device according to claim 2, wherein the audio output unit includes a headphone speaker or an earphone speaker. 6. A two-way interactive system that realizes remote dialogue by transmitting and receiving the image of the other party's interlocutor between the terminal devices via a predetermined transmission means, wherein at least one of the terminal devices comprises: A two-way interactive system having the same structure as the terminal device according to claim 2. 7. A computer program for executing the method of claim 1 by a computer. 8. A recording medium on which a computer program for executing the method according to claim 1 is recorded by a computer.