JPH11266312A - Voice communication conference method and system device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the voice communication conference method and the system device in which acoustic characteristics of all connected places are freely corrected from one place integrally, centrally and remotely. SOLUTION: In the voice communication conference system device 9a where plural places A, B are connected by a voice line 1, each place A (B) has a measurement signal generator 4a (4b) and an acoustic characteristic measurement device 5a (5b). An acoustic characteristic controller 6 at the place A controls the devices 4a, 4b, 5a, 5b and the measurement result through the use of a control line 13 to correct the acoustic characteristic of all the points B and the transmission reception characteristic is measured by measuring the measurement signal generated at the point B or A by the other point A or B, and the acoustic characteristics of the entire voice communication conference system device 9a is automatically corrected by correcting the voice lines 1 of all the points based on the measurement result.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voice communication conference method capable of connecting a plurality of points via a communication line and making a telephone call, and a system device directly used for implementing the method.

[0002]

2. Description of the Related Art A conventional voice communication conference system apparatus has independent acoustic characteristic measuring means and acoustic correcting means at each point, and measures and corrects acoustic characteristics only at each point. FIG. 11 shows an example of one channel and two points of a conventional audio conference system device capable of measuring acoustic characteristics (wraparound characteristics) between a speaker and a microphone at each point and correcting the measured looparound characteristics.

The system unit 9 connects two points (points A and B) with a voice line 1. The voices emitted in the audio communication conference rooms at the point A and the point B are transmitted to the microphone 2
Sounds are collected at a and 2b and transmitted to other points A and B, and the transmitted audio signals are reproduced by the speakers 3a and 3b. To measure the wraparound characteristic at point A,
First, the measurement signal generated from the measurement signal generator 4a is radiated from the speaker 3a into the audio communication conference room.

[0004] Note that "a" and "b" after the numbers indicate which of the points A and B are installed when the apparatus is located at a plurality of points A and B at the same time. Next, sound is collected by the microphone 2a, and the signal is input to the acoustic characteristic measuring device 5a. To correct based on the measurement result, the controller 6a calculates a characteristic to be given to the acoustic signal corrector based on the measurement result, and changes the characteristic to the reproduction acoustic characteristic corrector 7a or the characteristic of the sound collection acoustic characteristic corrector 8a. Thus, the acoustic characteristics of the audio communication conference room at the point A are corrected.

[0005] The connection of three or more points A, B, and C is also based on the system device 9 of FIG. FIG. 1 shows an example of the configuration of the three points A, B, and C connections. Multiple points A, B, C
Each of the two points is connected to the two-point connection system device 9 shown in FIG.

[0006] FIG. 13 shows two lines (points A and B) in voice line 1.
Of the conventional voice communication system 9 which is connected, has one microphone 2a, 2b and one speaker 3a, 3b in the voice communication conference room of each point A, B, and has a function of correcting transmission / reception characteristics. Here is an example. For example, when correcting the transmission / reception characteristics from the point B to the point A, the measurement signal generated from the measurement signal generator 4 at the point B is radiated from the measurement signal generation speaker 10 into the voice communication conference room at the point B. You.

The measurement signal emitted from the measurement signal generation speaker 10 is picked up by the microphone 2b at the point B, passes through the voice line 1, and is radiated into the audio communication conference room at the point A by the speaker 3a at the point A. Is done. The emitted measurement signal is collected by the measurement microphone 11 and measured by the acoustic characteristic measuring device 5. Based on the measurement result, the sound transmission / reception sound characteristic is corrected by correcting the reproduced sound characteristic corrector 7a at the point A or the sound collection sound characteristic corrector 8b at the point B.

In order to correct the transmission / reception characteristics from the point A to the point B, a measurement signal generator and a speaker for generating a measurement signal are installed at the point A, and a measurement microphone and an acoustic characteristic measurement device are installed at the point B. Thus, measurement and correction can be performed by the same means. Also in the case where connections at three or more points A, B, and C are made, similar to the device that measures and corrects the wraparound characteristics,
It is configured by connecting the system devices 9 between the points A and B as shown in FIG.

[0009]

In the conventional system device 9 as shown in FIG. 11, since the acoustic characteristics are measured and corrected at each point, the acoustic characteristics of all the connected points can be freely adjusted at one point. The centralized correction cannot be performed. In order to perform the correction in the connected state, the first problem is that the measuring instrument and the compensator must be manually operated at all points at the same time.

In the conventional system device 9 as shown in FIG. 11, there is a second problem that it is necessary to arrange persons at all points and to measure the wraparound characteristics. In the conventional system device 9 as shown in FIG. 11, it is necessary to operate the acoustic characteristic corrector at all points based on the measurement result in order to correct the wraparound characteristic and prevent howling. There was a problem.

[0013] As shown in FIG. 13, the conventional audio communication system 9 cannot control the measurement signal generator 4 and the acoustic characteristic measurement device 5 installed at different locations through the audio line 1. When measuring the transmission / reception characteristics through the line 1, there is a fourth problem that humans are required at both points. The conventional voice communication system 9 automatically operates the voice line 1
The fifth problem is that there is no means for automatically correcting the transmission / reception characteristics while connected to the voice line 1 because transmission / reception characteristics cannot be measured.

Here, the main objects to be solved by the present invention are as follows. That is, a first object of the present invention is to provide a voice communication conference method and a system device that can freely centralize and remotely correct the acoustic characteristics of all connected points at a certain point.

It is a second object of the present invention to provide a voice communication conference method and a system device which enable measurement and correction of the wraparound characteristics of all points at one point.

A third object of the present invention is to provide a voice communication conference method and a system device which enable measurement and correction of transmission / reception characteristics between all points at one point.

[0015] A fourth object of the present invention is to provide a voice communication conference method and a system apparatus which can perform high-speed sound correction while balancing each point by automatically controlling the correction of sound characteristics at a plurality of points. It will not be provided.

Another object of the present invention is to provide a specification, drawings,
In particular, it will be obvious from the description of each claim in the claims.

[0017]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the method of the present invention controls a sound characteristic of each point using a control line when a voice communication conference in which a plurality of points are connected by a communication line is performed. By controlling the measurement and the measurement result at one point, a method was adopted that allowed the acoustic characteristics of all points to be corrected at one point.

Further, by measuring the measurement signal generated at one point at the other point, it is possible to measure the transmission and reception characteristics, and by correcting the acoustic characteristics of all communication lines at all points from the measurement result, We implemented a method to automatically correct the acoustic characteristics of the entire voice communication conference system.

In the apparatus of the present invention, means for measuring and correcting acoustic characteristics between a speaker and a microphone are installed at each point, and the measurement result is transmitted / received at one location through a control line, or one correction means is provided. By installing a means that can be operated by the user, the sound correction value is calculated from the result concentrated in one place, and the correction is performed in all places. Therefore, it is possible to start the measuring device remotely, to be able to send and receive measurement results, to calculate the correction characteristics from the measurement results at all points, and to make corrections between the speakers and microphones at all points at one place. We took steps to do that.

In addition, in the audio communication conference room at each point, a loop-back characteristic is measured by connecting a measurement signal generator to the communication line receiving side and connecting an acoustic characteristic measuring device to the communication line transmitting side. Since the measurement signal generator and the acoustic characteristic measuring device at each point can perform control analysis at one place, it is possible to measure the wraparound characteristic at each point at one place. Therefore, measures were taken to control the measurement signal generator at each location and receive the measurement results at one location.

In addition, for the voice communication conference room at each point,
Based on the wraparound characteristics of all the points concentrated in one place, an appropriate wraparound characteristic correction value is calculated, and the correction value is transmitted to the acoustic characteristic correction means of each point through a control line, so that all the points can be collected in one place. Can be corrected. Therefore, measures were taken to control the acoustic characteristic correction means at all points at one point.

Further, a speaker for generating a measurement signal which is connected to the output of the signal generator for measurement and emits the signal for measurement, and a measurement for collecting the signal for measurement and inputting the signal to the acoustic characteristic measuring device are provided in the audio communication conference room. Install a microphone. By using the measurement signal generation speaker, radiating a measurement signal into a voice communication conference room at a certain point, and collecting the measurement signal transmitted through a voice line with the measurement microphone at another point Measures were taken to measure the transmission and reception sound characteristics between the two points.

Therefore, since the measurement signal generator and the acoustic characteristic measuring device at all points can be controlled, the measurement of the transmission / reception characteristics between all the connected points is performed at one place, and the result is obtained. Can be aggregated. For this reason, measures were taken to control the measurement signal generator and the acoustic characteristic measurement device at all points in one place, and to measure the transmission and reception characteristics using the measurement signal generation speaker and the measurement microphone.

In addition, an appropriate transmission / reception characteristic correction value is calculated based on the transmission / reception characteristics concentrated in one place, and the correction value is transmitted to the acoustic characteristic correction means at each point through a control line, The transmission / reception characteristics of all points can be corrected in one place.
For this reason, measures were taken to control the acoustic characteristic correction means at all points at one point.

Therefore, according to the present invention employing the above-described method and means, since the acoustic characteristic measurement results of all the points and the correction values for the correction can be transmitted and received, the acoustic characteristic corrections of all the points can be synchronized. Can be performed. Also,
By automatically calculating the correction value, it is possible to automatically correct the acoustic characteristics of all the points at one place, and it is possible to suppress howling and perform the sound correction at high speed. By these effects, the sound correction of the audio communication conference system connected to a plurality of points can be automatically performed at high speed.

More specifically, to solve the above-mentioned problems, the present invention achieves the above object by adopting novel characteristic solutions and means from the upper concept to the lower concept, which are enumerated below. To be done.

That is, the first feature of the method of the present invention is that when conducting a voice communication conference by connecting a plurality of dispersing points with a voice line, measurement and analysis of acoustic characteristics of each of the plurality of points from one point are performed. An object of the present invention is to adopt a configuration of a voice communication conference method in which correction of acoustic characteristics is centrally and remotely controlled using the results of measurement and analysis of transmission / reception characteristics of each voice line.

A second feature of the method of the present invention resides in the adoption of the configuration of the voice communication conference method in which the one point is one of the plurality of points in the first feature of the method of the present invention.

A third feature of the method of the present invention resides in the adoption of a configuration of a voice communication conference method in which the one point in the first feature of the method of the present invention is different from the plurality of points.

A fourth feature of the method according to the present invention is that the correction of the acoustic characteristic in the first or second characteristic of the method of the present invention is a correction of the acoustic characteristic of all the plurality of points. In hiring.

According to a fifth aspect of the method of the present invention, the correction of the acoustic characteristics in the first or second aspect of the method of the present invention is a correction of the acoustic characteristics of all the audio lines at all of the plurality of points. It consists in adopting the configuration of the teleconference method.

A sixth feature of the method of the present invention is that the measurement of the transmission / reception characteristic in the first, second, third, fourth or fifth feature of the method of the present invention is performed by using one of the plurality of points. The present invention resides in adoption of a configuration of a voice communication conference method performed by measuring a measurement signal generated at a point at another of the plurality of points.

A seventh feature of the method according to the present invention is that the centralized remote control according to the first, second, third, fourth, fifth or sixth feature of the method according to the present invention comprises the steps of: The present invention resides in adopting a configuration of a voice communication conference method performed through a control line to be connected.

According to an eighth aspect of the method of the present invention, the correction of the acoustic characteristic in the seventh aspect of the present invention is performed by the control of the control line through the receiving side voice line or the transmitting side voice line. The present invention resides in the adoption of a configuration of a voice communication conference method that works on a voice line.

A ninth feature of the method of the present invention is that the measurement signal in the sixth, seventh or eighth feature of the method of the present invention adopts a configuration of a voice communication conference method in which the frequency characteristic is a flat signal. is there.

A tenth feature of the method of the present invention is the method of the first, second, third, fourth, fifth, sixth, seventh, eighth or ninth feature of the method of the present invention. The point lies in the adoption of the configuration of the voice communication conference method having the voice communication conference room.

The eleventh feature of the method of the present invention resides in that the method of the present invention is the fourth, fifth, sixth, seventh, eighth, ninth or tenth.
In the configuration of the audio communication conference method, the acoustic characteristics of the plurality of all points in the above characteristics are the acoustic characteristics of each audio communication conference room at the plurality of all points.

A twelfth feature of the method of the present invention is that the method of the present invention is the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, or eleventh. The audio communication conference in which the correction of the acoustic characteristic in the characteristic of the above is performed by setting a value obtained by subtracting an acoustic characteristic measurement value of a certain point from the plurality of points from an average value of the acoustic characteristic measurement value as a correction value of the certain point. It consists in adopting the configuration of the method.

A first feature of the apparatus of the present invention is that in a voice communication conference system apparatus in which a plurality of dispersed points are connected by a voice line so that mutual voices can be communicated simultaneously, a measurement signal for generating a sound signal for measurement is provided. Signal generation means, acoustic characteristic measurement means for measuring acoustic characteristics by the acoustic signal generated by the measurement signal generation means, transmission and reception characteristics correction means for correcting the transmission and reception characteristics of each voice line, and Control signal for controlling the start and stop of the measurement signal generating means, the acoustic characteristic measuring means, the transmission / reception characteristic correction means, the measurement data measured by the acoustic characteristic measurement means, and the correction used by the transmission / reception characteristic correction means Data and data transmission / reception means for transmitting / receiving data to / from each of the plurality of points; Activate the step and the acoustic characteristic measuring means to measure the acoustic characteristic, concentrate the measurement data at each of the plurality of points, analyze the data at each concentrated point, and correct the transmission / reception characteristics required for each point. Calculate the data,
Distributing the calculated correction data to the respective points, and activating the transmission / reception characteristic correction means and correcting the transmission / reception characteristics of the respective voice lines, a multi-point voice characteristic control means is provided at one point, respectively. The present invention lies in the configuration of the voice communication conference system.

A second feature of the present invention apparatus is a voice communication conference system wherein the plurality of points in the first feature of the present invention apparatus each have a voice communication conference room mutually connected by voice lines. The configuration of the device is adopted.

A third feature of the device of the present invention resides in that the audio communication conference room in the second feature of the device of the present invention individually connects the measurement signal generating means to a receiving side of the voice line, An audio communication conference system apparatus which is connected to the transmitting side of the voice line to connect the acoustic characteristic measuring means to measure the acoustic characteristic and can measure the loop characteristic from the receiving side of the audio line to the transmitting side. Configuration adoption.

A fourth feature of the present invention is that the multi-point acoustic characteristic control means in the third feature of the present invention apparatus controls the data transmission / reception means so that the wraparound characteristics of all measured points are obtained. While concentrating on one point, calculate the correction value of the acoustic signal of all points, by the data transmission and reception means, distribute the calculated correction data to each point, activate the transmission and reception characteristics correction means, The present invention resides in adoption of a configuration of a voice communication conference system device having a system control function capable of freely correcting a wraparound characteristic at all points.

A fifth feature of the apparatus of the present invention resides in that the multi-point acoustic characteristic control means in the third or fourth feature of the present invention is provided with a speaker for radiating an output of the measurement signal generating means into a room. And a microphone for collecting sound in the room and inputting the sound to the acoustic characteristic measuring means. The measuring signal generating means at one of a plurality of points having the audio communication conference room, and another point. By activating the acoustic characteristic measuring means, the system has a system control function capable of measuring the transmission / reception audio characteristic of the voice line connected between the certain point and the another point as the measurement of the acoustic characteristic. The present invention lies in the configuration of the voice communication conference system.

A sixth feature of the device of the present invention resides in that the multi-point sound control means in the fifth feature of the device of the present invention comprises:
The transmission / reception sound characteristics measured by controlling the data transmission / reception means are concentrated at one point, and the correction values of the audio signals at all points are calculated, and the calculated correction data is calculated by the data transmission / reception means. The configuration of a voice communication conference system device having a system control function capable of distributing to each point, activating the transmission / reception characteristic correction means, and correcting the transmission / reception sound characteristic between all points to a preset characteristic. In hiring.

A seventh feature of the device of the present invention resides in that the multi-point acoustic characteristic control means in the second, third, fourth, fifth or sixth feature of the device of the present invention is such that: The present invention resides in adoption of a configuration of an audio communication conference system device provided at one of the audio communication conference rooms or at a third location other than any of the plurality of locations.

An eighth feature of the device of the present invention resides in that the data transmitting / receiving means in the second, third, fourth, fifth, sixth or seventh feature of the device of the present invention is provided in each voice communication conference room. The present invention resides in the adoption of a configuration of a voice communication conference system device which is provided and centrally connected to a data transmission / reception means directly connected to the multi-point acoustic characteristic control means via a control line.

A ninth feature of the present invention is the transmission / reception characteristic correction means in the first, second, third, fourth, fifth, sixth, seventh or eighth feature of the present invention. Is in the configuration and adoption of a voice communication conference system apparatus including a reproduction acoustic characteristic correction unit and a sound collection acoustic characteristic correction unit.

A tenth feature of the device of the present invention resides in that, in the ninth feature of the device of the present invention, the audio communication conference room includes a speaker provided at each receiving end of one or more of the receiving voice lines. A microphone provided at each transmitting end of the one or more transmitting voice lines, the reproducing sound characteristic correcting means inserted into the receiving voice line, and the sound collecting acoustic characteristics inserted into the transmitting voice line. Correction means, the measurement signal generation means for emitting a measurement sound signal, the acoustic characteristic measurement means for measuring the sound of the measurement signal, the reproduction acoustic characteristic correction means and the sound collection acoustic characteristic correction means An audio communication conference system apparatus is provided which includes at least the data transmission / reception means for centrally connecting the measurement signal generation means and the acoustic characteristic measurement means.

An eleventh feature of the device of the present invention resides in that, in the ninth feature of the device of the present invention, the audio communication conference room includes a speaker provided at each receiving end of one or more of the receiving voice lines. A microphone provided at each transmitting end of the one or more transmitting voice lines, the reproducing sound characteristic correcting means inserted into the receiving voice line, and the sound collecting acoustic characteristics inserted into the transmitting voice line. Correction means, the measurement signal generation means connected to the reception side audio line between the reproduction sound characteristic correction means and the speaker, and connection to the transmission side audio line between the sound collection acoustic characteristic means and the microphone. The data transmission / reception means for centrally connecting the acoustic characteristic measurement means, the reproduced sound characteristic correction means, the sound collection acoustic characteristic correction means, the measurement signal generation means, and the acoustic characteristic measurement means. Bei and in the configuration adopted voice communication conference system device comprising.

A twelfth feature of the device of the present invention resides in that, in the ninth feature of the device of the present invention, the voice communication conference room includes a speaker provided at each receiving end of one or more of the receiving voice lines. A microphone provided at each transmitting end of the one or more transmitting voice lines, the reproducing sound characteristic correcting means inserted into the receiving voice line, and the sound collecting acoustic characteristics inserted into the transmitting voice line. Correction means, connected to a measurement speaker, the measurement signal generation means for emitting a measurement sound signal, connected to a measurement microphone, the acoustic characteristic measurement means for measuring the sound of the measurement signal, A voice communication conference system device including at least a reproducing sound characteristic correcting unit, the sound collecting sound characteristic correcting unit, the measurement signal generating unit, and the data transmitting / receiving unit for centrally connecting the acoustic characteristic measuring unit. A configuration the adoption of the.

A thirteenth feature of the present invention apparatus is the multi-point acoustic characteristic control means provided in the voice communication conference room according to the eighth, ninth, tenth, eleventh or twelfth feature of the present invention apparatus. However, the reproduced sound characteristic correction means inserted into one or more of the receiving voice line, and the sound collection acoustic characteristic correction means each inserted into one or more of the transmitting voice line,
The measurement signal generating means for emitting an acoustic signal for measurement,
The acoustic characteristic measurement unit that measures the sound of the measurement signal, the data transmission and reception unit connected to the control line,
In a voice communication conference system device in which all means are centrally connected.

A fourteenth feature of the present invention apparatus is the multi-point acoustic characteristic control means provided in the voice communication conference room according to the eighth, ninth, tenth, eleventh or twelfth feature of the present invention apparatus. However, the reproduced sound characteristic correction means inserted into one or more of the receiving voice line, and the sound collection acoustic characteristic correction means each inserted into one or more of the transmitting voice line,
The measurement signal generating means connected to the receiving voice line between the speaker provided at each receiving end and the reproduced sound characteristic correcting means, and the measuring signal generating means connected between the microphone provided at each transmitting end and the sound collecting acoustic characteristic correcting means. An audio communication conference system apparatus is provided in which all means of the acoustic characteristic measuring means connected to the transmitting voice line and the data transmitting / receiving means connected to the control line are centrally connected.

A fifteenth feature of the present invention apparatus is the multi-point acoustic characteristic control means provided in the audio communication conference room according to the eighth, ninth, tenth, eleventh, or twelfth feature of the present invention apparatus. However, the reproduced sound characteristic correction means inserted into one or more of the receiving voice line, and the sound collection acoustic characteristic correction means each inserted into one or more of the transmitting voice line,
Said measurement signal generating means connected to a measurement speaker,
The acoustic characteristic measurement unit connected to the measurement microphone, the data transmission and reception unit connected to the control line,
In a voice communication conference system device in which all means are centrally connected.

[0054]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; Hereinafter, typical examples of the apparatus and examples of the method of the present invention will be described, but the present invention is not necessarily limited only to the means of the following examples of the apparatus and the method of the example of the method. The present invention achieves the object of the present invention and can be carried out with appropriate modifications within a range having the effects described below.

(Example 1 of Apparatus) FIG. 1 is a block diagram of the most basic system configuration of this example of apparatus. This device example 9
a is a voice communication conference room at point A connected with voice line 1 and B
Deployed over the audio conference room at the location.

The voice communication conference room at the point A has a voice line 1
, A microphone 2a provided at the transmitting end of the voice line 1, a measuring signal generator 4a for emitting a measuring acoustic signal, and acoustic characteristics for measuring the sound of the measuring signal. A measuring device 5a, a reproduced sound characteristic corrector 7a inserted on the receiving side of the audio line 1, a sound collection acoustic characteristic device 8a inserted on the transmitting side of the audio line 1, and a data transceiver provided at the end of the control line 13. 12a and a signal generator 4a for measurement
And a sound characteristic measuring device 5a, a reproduced sound characteristic corrector 7a, a sound collecting sound characteristic corrector 8a, and an acoustic characteristic controller 6 for centrally connecting and integrally controlling the data transceiver 12a.

The voice communication conference room at point B has a voice line 1
, A microphone 2b provided at the transmitting end of the voice line 1, a measuring signal generator 4b that emits a measuring sound signal, and acoustic characteristics for measuring the sound of the measuring signal. A measuring device 5b, a reproduced acoustic characteristic corrector 7b inserted on the receiving side of the audio line 1, a sound collection acoustic characteristic corrector 8b inserted on the transmitting side of the audio line 1, a measurement signal generator 4b, and an acoustic characteristic Measuring device 5b and playback acoustic characteristic corrector 7b
And the pickup sound characteristic compensator 8b are connected collectively to the control circuit 13
And a data transceiver 12b provided at the end.

(Method Example 1) A method example 1 of the present embodiment applied to the apparatus example 1 will be described with reference to FIG. The acoustic characteristic controller 6 is connected to the measurement signal generator 4a at the point A, the acoustic characteristic measuring device 5a, the reproduced acoustic characteristic corrector 7a, and the sound collection acoustic characteristic corrector 8a, and is controllable.

The data transmitter / receiver 12 at both points A and B
a and 12b are connected by a control line 13. As a result, the measurement result of the acoustic characteristic measuring device 5b at the point B is transmitted to the controller 6
And the correction value from the controller 6 can be sent to the sound collection sound characteristic correctors 8a and 8b and the reproduced sound characteristic correctors 7a and 7b at the points A and B to be controlled.

The acoustic characteristic controller 6 can activate the measuring signal generators 4a and 4b at both points A and B to generate a measuring signal, and can also control the acoustic characteristic measuring devices 5a and 5b at both points A and B. It can start up, measure, and receive the results.
Thus, the acoustic characteristics of both points A and B can be measured at one point A. Similarly, the acoustic characteristic controller 6 can control the reproduced acoustic characteristic correctors 7a and 7b and the sound collection acoustic characteristic correctors 8a and 8b at both points A and B, and can correct the acoustic characteristic at the point A to an arbitrary acoustic characteristic. It is possible.

In order to configure the audio communication conference system device 9a 'having two or more channels, as shown in a modification of the multi-channel (n-channel) device example 1 of FIG.
Microphones 2a, 2b, speakers 3a, 3b, reproduction acoustic characteristic correctors 7a, 7b, and sound collection acoustic characteristic correctors 8a, 8
b and the number of voice lines 1 (n). In FIG. 2, "1-n" and "2a"
A "-n" after the number of each component, such as -n, indicates that the component operates for the nth channel.

Further, in order to configure a voice communication conference system apparatus having two or more channels and three or more points, the configuration 9a 'of the voice communication conference system apparatus having a plurality of channels and two points as shown in FIG. This can be realized by configuring between each point in the same manner as described above. However, in that case, all 2
The controller 6 of the configuration 9a 'of the voice communication conference system at the point is connected to each other, or the controller 6 is installed only in the configuration 9a' of the voice communication conference system of the two points, and the other configuration and data are connected. By connecting the transmitting and receiving means 12a and 12b, the acoustic characteristics between all the points are collected in the voice communication conference system device at the points, thereby making it possible to finely correct the acoustic characteristics corresponding to the characteristics between the points. .

(Embodiment 2) FIG. 3 is a block diagram of the basic configuration of the system of Embodiment 2 of the present invention. This is an example of a configuration in which a voice line 1 is connected to each of two channels for transmission and reception.

The difference between the device example 2 of the present invention and the device example 1 shown in FIG. 1 is that the measurement signal generators 4a and 4b in the voice communication conference room at the point A and the voice communication conference room at the point B use the reproduced sound. A point connected to the audio line 1 between the characteristic correctors 7a and 7b and the speakers 3a and 3b;
With the sound pickup acoustic characteristic correctors 8a and 8b and the microphone 2
This is a point connected to the voice line 1 between the terminals a and 2b. Others are the same and have the same reference numerals.

When the second embodiment of the present invention is implemented with a plurality of channels, the configuration of the transformation example shown in FIG. 4 is used. Both locations (for example,
All speakers (3a-n) at the respective points are switched by switching the reception channel output from the measurement signal generators 4a, 4b of A, B) and the transmission channel input to the acoustic characteristic measurement devices 5a, 5b. , (3b-n)
And the microphones (2a-n) and (2b-n) can be measured.

Further, in order to configure the audio communication conference system of the present embodiment 2 with two or more channels and three or more points, as in the case of the first embodiment, as shown in FIG. Configuration 9b 'of communication conference system device
Can be realized by configuring between points as in FIG.

(Method Example 2) A method example 2 of this embodiment applied to the apparatus example 2 will be described with reference to FIG. In order to measure the acoustic characteristic (wraparound characteristic) between the speaker 3a at the point A and the microphone 2a, the acoustic characteristic controller 6
Activate the measurement signal generator 4a at the point to generate the measurement signal,
The sound is radiated from the speaker 3a on the receiving side to the voice communication conference room space at the point A, and is picked up by the microphone 2a on the transmitting side at the same point A. The collected signal is input to the acoustic characteristic measuring device 5a. The acoustic characteristic controller 6 can measure the wraparound characteristic at the point A by reading the measurement result.

In order to measure the wraparound characteristic at the point B, the acoustic characteristic controller 6 controls the data transmitting / receiving units 12a and 12a.
signal generator 4 for measurement at point B through b and control line 13
Activate b, and radiate a measurement signal into the voice communication conference room space at point B. The signal picked up by the microphone 2b at the point B is input to the acoustic characteristic measuring device 5b at the point B. The acoustic characteristic controller 6 can measure the wraparound characteristic at the point B by reading the measurement result through the data transceivers 12a and 12b and the control line 13.

From the wraparound characteristics of all the points concentrated on the acoustic characteristic controller 6, each of the reproduced acoustic characteristic correctors 7a,
7b, a correction value to be given to the sound pickup acoustic characteristic correctors 8a, 8b is calculated, and the correction value is set through the data transceivers 12a, 12b and the control line 13.

Next, a specific correction control method is as follows. The measurement signal generator 4a at the point A generates a measurement signal having a flat frequency characteristic as shown in FIG.
This characteristic is defined as N (f). f indicates that this characteristic is dependent on frequency. A measurement signal radiated from the speaker 3a into the audio communication conference room at the point A and collected by the microphone 2a is measured by the acoustic characteristic measuring device 5a.

It is assumed that the result can be represented by a characteristic Ha (f) as shown in FIG. 6, for example. Similarly, the measurement result measured at the point B is Hb as shown in FIG.
(F). In these cases, the controller 6 sets the correction value Ea (f) = − Ha for the point A as shown in FIG.
(F) + C and correction Eb for point B as shown in FIG.
(F) = − Hb (f) + D is calculated. C and D are constants. For example, C may be an average value of Ha (f), and D may be an average value of Hb (f).

The calculated result Ea (f) is sent to the reproduction acoustic characteristic corrector 7a or the sound collection acoustic characteristic corrector 8a at the point A, and is set as a correction value. The calculated result E
b (f) is sent from the data transmitter / receiver 12a to the data transmitter / receiver 12b at the point B via the control line 13, and the reproduced sound characteristic corrector 7b or the sound pickup sound characteristic corrector 8b at the point B
Is set as the correction value. As described above, the acoustic characteristics of all the points at the point A can be corrected.

Similarly, in the case of a plurality of points and a plurality of channels, it can be realized by the acoustic characteristic controller 6 calculating and setting the correction value of each point from the measured value of each point. According to the second example of the present apparatus and the second example of the present method, it is possible to measure the acoustic characteristics and correct the acoustic characteristics at all points at a certain point.
Also, the acoustic characteristic controller 6 is installed on the control line 13 side, and the acoustic characteristic controller 6 is transmitted to the data transceivers 12 at all points.
Is configured to transmit and receive data, it is possible to make the configuration of the system device at all points the same.

(Example 3 of Device) FIG. 8 is a block diagram of the system configuration of this example of the device, which is an example of the configuration when one channel is connected at two points. The difference between this device example 3 and the device example 1 shown in FIG. 1 is that the measurement signal generators 4a and 4b in the audio communication conference rooms at the points A and B are provided with the microphone 2
A speaker 10 for generating a signal for measurement facing the a and 2b
a, 10b are connected, and the acoustic characteristic measuring devices 5a, 5b
And the measurement microphones 11a and 11b facing the speakers 3a and 3b. Others are the same and have the same reference numerals.

FIG. 10 shows a modification of the third embodiment of the present invention for realizing two points and a plurality of channels. Regardless of the number of channels, the number of measurement signal generation speakers 10a and 10b and measurement microphones 11a and 11b can be measured even by one. However, a more detailed measurement result can be obtained by switching the connection between the measurement signal generators 4a and 4b and the acoustic characteristic measurement devices 5a and 5b by using a plurality of audio communication conference rooms and the like and switching the connection between the measurement signal generators 4a and 4b and the acoustic characteristic measurement devices 5a and 5b. Also when connecting a plurality of points, it can be realized by the same connection as in FIG.

FIG. 10 shows a configuration example in which the transmission / reception characteristics of both points A and B are corrected by the system device 9c 'having two or more channels. As in the case of the transformation example of the device example 1 shown in FIG. 2, the audio line 1, the microphone 2, the loudspeaker 3, the reproduced acoustic characteristic corrector 7, and the collected acoustic characteristic corrector 8
And the data transmitters and receivers 12a and 12b can control the reproduction acoustic characteristic correctors 7a-n and 7b-n and the sound collection acoustic characteristic correctors 8a-n and 8b-n for all channels. It is possible.

Even when the number of channels increases, the measurement signal generators 4a and 4b, the acoustic characteristic measurement devices 5a and 5b, the measurement signal generation speakers 10a and 10b, and the measurement microphone 1
1a and 11b need only one at each point. Furthermore,
Also, as in the case of the above-described device example 1, by installing the device connected at two points between each ground as shown in FIG.
The configuration of the device is also possible in the case of three or more points.

For example, to measure the transmission / reception characteristics from the point B to the point A, the acoustic characteristic measuring device 5a at the point A is connected to the output of the measurement microphone 11a as shown in FIG. The generator 4b is connected to the measurement signal generation speaker 10b.

The acoustic characteristic controller 6 includes a data transceiver 12a at the point A, a control line 13, and the data transceiver 1 at the point B.
The measurement signal generator 4b at the point B is activated through 2b to generate a measurement signal. As the signal for measurement, a signal having a flat frequency characteristic as shown in FIG. The generated measurement signal is radiated from the measurement signal generation speaker 10b to the voice communication conference room at the point B, is similarly picked up by the microphone 2b at the point B, and is transmitted through the voice line 1 to the speaker 3a at the point A.
Radiated into the voice communication conference room.

The measurement signal radiated at the point A is picked up by the measurement microphone 11a. The collected measurement signal is measured by the acoustic characteristic measuring device 5a and the result is sent to the audio characteristic controller 6 to measure the transmitting and receiving acoustic characteristics from the point B to the point A at the point A. Is possible.

The acoustic characteristic measuring device 5b at the point B, the measuring microphone 11b, and the measuring speaker 10a at the point A
And a sound signal controller 6 using the measurement signal generator 4a
By connecting and controlling each of them by the data transceiver 12a and the control line 13, it is possible to measure the transmission / reception sound characteristics from the point A to the point B.

The acoustic characteristic controller 6 calculates a correction value for acoustic correction based on the transmission and reception audio characteristics measured as described above. The calculated correction value is directly sent to the point A, and to the point B, the data transceiver 12a, the control line 13,
A correction value can be set to the reproduction acoustic characteristic correctors 7a and 7b and the sound collection acoustic characteristic correctors 8a and 8b at both points A and B through the data transceiver 12b at the point B.

A specific correction control method is as follows. It is assumed that the transmission / reception characteristics from the point A to the point B measured in the connected state can be represented by H (f) in FIG. In these cases,
The voice characteristic controller 6 calculates a correction value E (f) as shown in FIG.
= -H (f) + C is calculated.

C is a constant. For example, C may be an average value of H (f). The calculated result E (f) is sent to the sound collection sound characteristic corrector 8a at the point A and the reproduced sound characteristic corrector 7b at the point B, and is set as a correction value.

When correcting the transmission / reception characteristics from the point B to the point A, a correction value is calculated from the measurement result in the same manner, and the reproduction sound characteristic corrector 7a at the point A and the sound collection sound characteristic correction at the point B are corrected. Is set as a correction value of the detector 8b. As described above, the acoustic characteristics of all the points at the point A can be corrected.

[0086]

As described above, according to the present invention, the acoustic characteristic correction of the voice communication conference system device which has been conventionally adjusted at each point is performed intensively at one point, and the acoustic characteristic of the point is measured and analyzed. Performs measurement and analysis of transmission and reception characteristics through a voice line, and corrects the acoustic characteristics using the results. This enables even unskilled persons to easily correct and adjust the acoustic characteristics. There are advantages.

[Brief description of the drawings]

FIG. 1 is a system configuration block diagram illustrating a first example of an apparatus in the case of one channel and two points according to an embodiment of the present invention.

FIG. 2 shows an example 1 of the device in the case of the same, multi-channel, two points
It is a system configuration block diagram which shows the example of a metamorphosis.

FIG. 3 shows an example 2 of the device in the case of one channel and two points;
FIG. 2 is a block diagram showing a system configuration.

FIG. 4 Same as above, multi-channel, two-point device example 2
It is a system configuration block diagram which shows the example of a metamorphosis.

FIG. 5 is a frequency characteristic diagram of a measurement signal used in Method 2 of the above.

FIG. 6 is a diagram showing a measurement result and a correction value diagram at a point A in Method 2 of the same as above.

FIG. 7 is a diagram showing a measurement result and a correction value diagram at a point B in Method 2 of the same as above.

FIG. 8 shows an example 3 of the apparatus in the case of one channel and two points.
FIG. 2 is a block diagram showing a system configuration.

FIG. 9 is a diagram illustrating a measurement result of transmission / reception characteristics and a correction value in Method Example 3;

FIG. 10 is a system configuration block diagram showing a modification example of the device example 3 in the case of multi-channel, two points in the above.

FIG. 11 is a block diagram showing a configuration of a conventional voice communication conference system apparatus having a means for correcting acoustic characteristics from a speaker to a microphone.

FIG. 12 is a schematic view of the configuration of a three-point connection system device.

FIG. 13 shows a conventional voice communication conference system device having a transmission / reception characteristic correction unit.

[Explanation of symbols]

"A" and "b" after the numbers indicate the points when the system device is present at a plurality of points at the same time. DESCRIPTION OF SYMBOLS 1 ... Audio line 2a, 2b ... Microphone 3a, 3b ... Speaker 4a, 4b ... Measurement signal generator 5a, 5b ... Acoustic characteristic measuring device 6 ... Audio characteristic controller 6a, 6b ... Controller 7a, 7b ... Reproduction acoustic characteristic Compensators 8a, 8b: Sound collection acoustic characteristic correctors 9a, 9b, 9c: Two-point connected voice communication conference system devices 9a ', 9b', 9c ': Multi-channel, two-point connected voice communication conference system devices 10a, 10b: speaker for generated signal for measurement 11a, 11b: microphone for measurement 12a, 12b: data transceiver 13: control line

Claims (27)

[Claims] When performing a voice communication conference by connecting a plurality of dispersed locations with a voice line, measurement and analysis of acoustic characteristics of each of the plurality of locations from one location;
A method for centrally and remotely controlling the correction of acoustic characteristics using the result of measurement and analysis of the transmission and reception characteristics of each voice line. 2. The audio communication conference method according to claim 1, wherein the one point is one of the plurality of points. 3. The audio communication conference method according to claim 1, wherein the one point is a different point from the plurality of points. 4. The audio communication conference method according to claim 1, wherein the correction of the acoustic characteristics is a correction of the acoustic characteristics of all of the plurality of points. 5. The audio communication conference method according to claim 1, wherein the correction of the acoustic characteristics is a correction of the acoustic characteristics of all of the voice lines at all of the plurality of points. 6. The transmission / reception characteristic is measured by measuring a measurement signal generated at one of the plurality of points at another of the plurality of points. The voice communication conference method according to claim 1, 2, 3, 4, or 5. 7. The voice communication conference method according to claim 1, wherein the centralized remote control is performed through a control line connecting each of the plurality of points. 8. The voice communication according to claim 7, wherein the correction of the acoustic characteristic is performed on the voice line on the receiving side or the voice line on the transmitting side at each point via the control line. Meeting method. 9. The voice communication conference method according to claim 6, wherein the measurement signal is a signal having a flat frequency characteristic. 10. The system according to claim 1, wherein each of the plurality of points has a voice communication conference room.
10. The voice communication conference method according to 8 or 9. 11. The sound characteristic of the plurality of all points is an acoustic characteristic of each of the plurality of all points in each audio communication conference room. 1
0. The voice communication conference method according to item 0. 12. The sound characteristic correction, wherein a value obtained by subtracting a sound characteristic measurement value of a certain point from the plurality of points from an average value of the sound characteristic measurement value is set as a correction value of the certain point. Claims 1, 2, 3, 4, 5, 6, 7,
The voice communication conference method according to 8, 9, 10 or 11. 13. A voice communication conference system device for connecting a plurality of dispersing points by a voice line so that voices can be mutually communicated simultaneously. A measurement signal generating means for generating a measurement sound signal; Acoustic characteristic measuring means for measuring acoustic characteristics based on the acoustic signal generated by the use signal generating means, transmitting and receiving characteristics correcting means for correcting the transmitting and receiving characteristics of each voice line, the measuring signal generating means and the sound Control data for controlling the start and stop of the characteristic measuring means and the transmission / reception characteristic correction means, measurement data measured by the acoustic characteristic measurement means, and correction data used by the transmission / reception characteristic correction data, and data for transmitting and receiving the data. Transmitting and receiving means to each of the plurality of points; transmitting and receiving the various data in a state where the plurality of points are connected to each other; Activating the means and measuring the acoustic characteristics, concentrating the measurement data at each of the plurality of points, analyzing the data at each of the concentrated points, calculating the correction data of the transmission / reception characteristics required for each of the points, and calculating Distributing the corrected data to the respective points, and arranging the multi-point voice characteristic control means for activating the transmission / reception characteristic correction means and correcting the transmission / reception characteristics of the respective voice lines at one point, respectively. A voice communication conference system device characterized by the above-mentioned. 14. The audio communication conference system apparatus according to claim 13, wherein said plurality of points each have an audio communication conference room connected to each other by an audio line. 15. The audio communication conference room individually connects the measurement signal generating means to the receiving side of the voice line, and connects the acoustic characteristic measuring means to the transmitting side of the voice line, 15. The audio communication conference system apparatus according to claim 14, wherein the measurement of the acoustic characteristics is an indoor environment in which a loop characteristic from the voice line receiving side to the transmitting side can be measured. 16. The multi-point acoustic characteristic control means controls the data transmission / reception means to concentrate the measured wraparound characteristics of all points at one point and to correct the correction values of the acoustic signals at all points. Calculated, and the data transmission / reception means distributes the calculated correction data to each point,
The audio communication conference system apparatus according to claim 15, further comprising a system control function capable of activating the transmission / reception characteristic correction means and correcting a loop-around characteristic at all points. 17. The multi-point acoustic characteristic control unit includes: a speaker that radiates an output of the measurement signal generation unit into a room; and a microphone that collects sound in the room and inputs the sound to the acoustic characteristic measurement unit. By activating the measurement signal generating means at a certain point among the plurality of points having the provided voice communication conference room and the acoustic characteristic measuring means at another point, the measurement of the acoustic characteristic is performed as described above. 17. The audio communication conference system device according to claim 15, further comprising a system control function capable of freely measuring transmission / reception audio characteristics of the voice line connecting the point and the different point. 18. The multi-point sound control means concentrates the transmission / reception sound characteristics measured by controlling the data transmission / reception means at one point, and calculates correction values of sound signals at all points. The data transmission / reception means distributes the calculated correction data to each point, activates the transmission / reception characteristic correction means, and controls the system so that transmission / reception sound characteristics between all points can be freely corrected to predetermined characteristics. The voice communication conference system device according to claim 17, having a function. 19. The multi-point acoustic characteristic control means is provided at one of the plurality of points in the audio communication conference room or at a third point other than any of the plurality of points. 14, 15, 16, 17 or 1
9. The audio communication conference system device according to 8. 20. The data transmission / reception means provided in each audio communication conference room and centrally connected to a data transmission / reception means directly connected to the multi-point acoustic characteristic control means via a control line. Claims 14, 15, 16, 17, 18
Or the audio communication conference system device according to 19. 21. The transmission / reception characteristic correction means, comprising: reproduction sound characteristic correction means and sound collection sound characteristic correction means.
21. The audio communication conference system device according to 7, 18, 19 or 20. 22. A speaker provided at each receiving end of at least one of the receiving voice lines, and a microphone provided at each transmitting end of the at least one transmitting voice line. And the reproduced sound characteristic correcting means inserted into the receiving voice line; the collected sound characteristic correcting means inserted into the transmitting voice line; and the measuring signal generating means for emitting a measuring sound signal. The acoustic characteristic measuring means for measuring the sound of the measurement signal; the reproduction acoustic characteristic correction means, the sound collection acoustic characteristic correction means, the measurement signal generation means, and the acoustic characteristic measurement means being collectively connected. 22. The voice communication conference system device according to claim 21, further comprising at least data transmission / reception means. 23. A speaker provided at each receiving end of at least one of the receiving voice lines, and a microphone provided at each transmitting end of the at least one transmitting voice line. The reproduced sound characteristic correcting means inserted into the receiving voice line; the sound collecting sound characteristic correcting means inserted into the transmitting voice line; and the receiving side between the reproduced sound characteristic correcting means and the speaker. The measurement signal generating means connected to an audio line; the sound characteristic measuring means connected to the transmission side audio line between the sound pickup sound characteristic means and the microphone; the reproduced sound characteristic correction means; and the sound pickup 22. The speech communication society according to claim 21, wherein at least a data transmission / reception unit for centrally connecting the acoustic characteristic correction unit, the measurement signal generation unit, and the acoustic characteristic measurement unit is provided. The system unit. 24. The audio communication conference room, comprising: a speaker provided at each receiving end of at least one of the receiving voice lines; and a microphone provided at each transmitting end of the at least one transmitting voice line. Connecting the reproduced sound characteristic correcting means inserted into the receiving voice line, the sound collecting acoustic characteristic correcting means inserted into the transmitting voice line, and connecting to a measuring speaker to generate a measuring sound signal. The measurement signal generation means, the acoustic characteristic measurement means connected to a measurement microphone to measure the sound of the measurement signal, the reproduction acoustic characteristic correction means, the sound collection acoustic characteristic correction means, and the measurement signal 22. The audio communication conference system apparatus according to claim 21, wherein at least the data transmitting / receiving means for centrally connecting the generating means and the acoustic characteristic measuring means are provided. 25. The multi-point acoustic characteristic control means provided in the audio communication conference room, the reproduced acoustic characteristic correction means inserted into one or more of the receiving audio lines, and one or more of the transmissions The sound collection sound characteristic correction means inserted into the side audio line, the measurement signal generation means for emitting a measurement sound signal, the sound characteristic measurement means for measuring the sound of the measurement signal, and the control line The data transmission / reception means connected to and all means are connected in a centralized manner.
5. The voice communication conference system device according to 4. 26. The multi-point audio characteristic control means provided in the audio communication conference room, the reproduced audio characteristic correction means inserted into one or more of the receiving audio lines, and one or more of the transmissions Said sound collection sound characteristic correcting means inserted into each side audio line; said measuring signal generating means connected to said receiving side audio line between a speaker provided at each receiving end and said reproduced sound characteristic correcting means; Centralized connection of all means including: a microphone provided at the talk end and the acoustic characteristic measuring means connected to the transmitting voice line between the sound collecting acoustic characteristic correcting means; and the data transmitting / receiving means connected to the control line. 23. The method of claim 20, 21, 22, 23, or 2
5. The voice communication conference system device according to 4. 27. The multi-point acoustic characteristic control means provided in the audio communication conference room, wherein: the reproduced acoustic characteristic correction means inserted into one or more of the receiving audio lines; The sound collection sound characteristic correction means inserted into the side audio line, the measurement signal generation means connected to a measurement speaker, the sound characteristic measurement means connected to a measurement microphone, and the control line connected to the control line. The data transmitting / receiving means and all means are connected in a centralized manner.
5. The voice communication conference system device according to 4.