JP2000307710A - Telephone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically set an initial gain value in changing a received sound volume to an optimum value corresponding to a use situation by operating the new initial gain value in accordance with the latest changed gain value and the initial gain value whenever the gain value of received sound volume is changed. SOLUTION: When received sound volume change input is given from an operation part 11, a control part 12 transmits the effect to a gain adjusting part 14. The gain adjusting part 14 increases/decreases an initial gain value stored in an initial gain storage part 13 in accordance with an instruction of the part 12 and with a gain increase/decrease value inputted from the operation part 11. Thus, the gain adjusting part 14 changes the received sound volume of a receiver part 16. An initial gain value operation part 10 executes an operation in accordance with the gain value generated by the gain adjusting part 14 and the initial gain value of previous time with the instruction of the control part 12 and generates the new initial gain value. The control part 12 updates the initial gain value stored in the initial gain value storage part 13 by the new initial gain value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to an apparatus for transmitting an audio signal through a speaker. The present invention has been developed for adjusting the reception volume of a telephone device, but can be used for a device that optimally controls the volume of an audio signal transmitted from a speaker.

[0002]

2. Description of the Related Art Telephone devices that allow a user to arbitrarily adjust the reception volume have become widespread. The main factors that cause a request to change the receiving sound volume include the relationship between the ambient environment sound level and the receiving sound volume, individual differences in the listening ability of the user, individual differences in the voice level of the other party, the telephone device and / or communication of the other party. Variations in the amount of attenuation of the received sound volume due to the network.

A conventional example of a telephone device corresponding to such a reception volume change request will be described with reference to FIG. FIG. 5 is a block diagram of a main part of a telephone apparatus having a conventional reception volume changing function. As shown in FIG. 5, the receiver 15 includes a receiver unit 16 and a microphone unit 17 and a gain adjustment unit 14.
Adjusts the receiving sound volume by adjusting the gain of the receiver unit 16.

The user operates the operation unit 11 to instruct the control unit 12 to increase or decrease the reception sound volume. Control unit 12
Transmits the gain increase / decrease value input from the operation unit 11 to the gain adjustment unit 14. The gain adjustment unit 14 increases or decreases the initial gain value stored in the initial gain value storage unit 13 according to the gain increase / decrease value from the control unit 12, and adjusts the reception volume of the receiver unit 16 according to the gain value.

[0005]

In the above conventional example, the initial gain value stored in the initial gain value storage unit 13 is fixedly set in advance. Assuming that the fixed gain value is "0", the problem of the related art will be described with reference to FIGS. FIG. 6 is a diagram showing a conventional gain value change state in a telephone device used by an unspecified majority. FIG. 7 is a diagram showing a conventional gain value change situation in a telephone device mainly used by one user. 6 and 7, the horizontal axis indicates the gain change value from the user, and the vertical axis indicates the actual gain value. 6 and 7 indicate an initial gain value.

[0006] As described above, the main factors that cause a request to change the received sound volume include the relationship between the ambient environment sound level and the received sound volume, individual differences in the listening ability of the user, and individual differences in the voice level of the other party. And a variation in the amount of attenuation of the received sound volume by the other party's telephone device and / or communication network.
Therefore, in an example of a public telephone in which the ambient environmental sound level changes greatly and is used by an unspecified number of users, FIG.
As shown in (2), it is conceivable that the user sets a different reception volume every time a call is made.

At this time, if the initial gain value is always set to "0", as shown on the horizontal axis in FIG. 6, the user changes from the initial gain value "0" every time a call is made. A significant change in the gain value will be required.

The ambient environment sound level varies depending on the location of a public telephone, such as on a sidewalk of a main road or in a quiet residential area. However, in many cases, the average value of the ambient environmental sound level at each installation location does not change much. However, in the conventional telephone device, the initial gain value is fixed to "0" at any installation location. In particular, if the telephone device is installed in a location where the ambient environment sound level is high, the call is received every time a call is made. You are forced to change the volume significantly.

FIG. 7 shows an example of a telephone device mainly used by one user. This user installs the telephone device in a fixed manner and assumes that the ambient environmental sound level is constant. For example, the user is forced to change the gain value from the fixed initial gain value “0” to the desired reception volume every time a call is made.

[0010] The prior art for automatically adjusting the receiving volume of the telephone device to an appropriate volume and allowing the user to comfortably talk is a conventional technology that specifies a partner terminal and automatically changes the receiving volume according to the partner terminal. There is a technology that detects the volume from the other party and automatically adjusts the volume according to the detected value (Japanese Patent Laid-Open No. Hei 8-
No. 181739, JP-A-8-51475, JP-A-2-51.
149194, JP-A-2-92046, JP-A-63
-280551).

However, any of the prior arts is a technique corresponding to the situation of the partner terminal and the situation of the telephone network with the partner terminal. It is difficult to cope with a situation where the volume change frequently occurs according to the user's personal preference.

The present invention has been made in such a background, and a telephone apparatus capable of automatically setting an initial gain value at the time of changing a receiving sound volume to an optimum value in accordance with a use situation. The purpose is to provide.

[0013]

According to the present invention, there is provided a means for adjusting a gain value of a received sound volume, a means for storing an initial gain value of a received sound volume, and an initial gain stored in the storing means according to an operation input. A telephone device comprising: means for increasing and decreasing a value; and means for setting a gain value obtained by the increasing and decreasing means as a gain value of the adjusting means.

Here, the feature of the present invention resides in that there is provided means for calculating a new initial gain value according to the gain value set by the setting means and the initial gain value.

That is, the telephone apparatus according to the present invention is characterized in that a new initial gain value is calculated in accordance with the latest changed gain value and the initial gain value every time there is a change in the received sound volume gain value. I do. Therefore, the initial gain value is updated in accordance with the latest reception volume change information, and the optimal initial gain value can be automatically set in accordance with the usage status of the telephone device.

For example, when a telephone device having a standard initial gain value set at the time of manufacture is installed in a place where the ambient environmental sound level is high, the receiving sound volume is set to a high level by the user immediately after installation. Will be changed to Then, the initial gain value set at the time of manufacturing is automatically changed to a higher gain value accordingly. In this way, the telephone device can be a telephone device having an initial gain value suitable for the installation location.

The calculating means may include a means for setting an average value of the gain value set by the setting means and the initial gain value as a new initial gain value.

[0018]

Embodiments of the present invention will be described with reference to FIG. FIG. 1 is a block diagram of a main part of a telephone device according to an embodiment of the present invention.

The present invention comprises a gain adjusting unit 14 for adjusting the gain value of the received sound volume, and an initial gain value storage unit 13 for storing the initial gain value of the received sound volume. Is a telephone device that sets a gain value by increasing or decreasing the initial gain value stored in the initial gain value storage unit 13 in accordance with an operation input from the operation unit 11.

Here, a feature of the present invention is that a new initial gain value is calculated according to the gain value set by the gain adjustment unit 14 and the initial gain value stored in the initial gain value storage unit 13. This is provided with an initial gain value calculation unit 10 which is means for performing the above operation.

The initial gain value calculator 10 includes a gain adjuster 14
The average value of the gain value set by the above and the initial gain value stored in the initial gain value storage unit 13 is set as a new initial gain value.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 2 is a flowchart showing the operation of the control unit 12. FIG. 3 is a diagram showing a gain value change situation of the present invention in a telephone device used by an unspecified majority. FIG. 4 is a diagram showing a gain value change state of the present invention in a telephone device used mainly by one user. 3 and 4, the horizontal axis indicates the gain change value from the user, and the vertical axis indicates the actual gain value. 3 and 4 indicate initial gain values.

As shown in FIG. 2, when there is a reception volume change input from the operation unit 11 (S1), the control unit 12 notifies the gain adjustment unit 14 of the input. The gain adjustment unit 14 increases or decreases the initial gain value stored in the initial gain value storage unit 13 according to the gain increase / decrease value input from the operation unit 11 in accordance with an instruction from the control unit 12. Thereby, the gain adjustment unit 1
4 changes the reception volume of the receiver unit 16 (S2). The control unit 12 issues an instruction to the initial gain value calculation unit 10, performs calculation according to the gain value generated by the gain adjustment unit 14 and the previous initial gain value, and generates a new initial gain value (S3). . In the embodiment of the present invention, the average value of the gain value generated by the gain adjustment unit 14 and the previous initial gain value is set as a new initial gain value. The control unit 12 updates the initial gain value stored in the initial gain value storage unit 13 with the new initial gain value (S4).

In this way, the initial gain value is updated every time the user changes the receiving sound volume. Therefore, as shown in FIG. 3, even in the case of a telephone device such as a public telephone used by an unspecified majority, the gain change value operated by the user is close to the latest initial gain value except in special cases. Become.

As shown in FIG. 4, when the telephone device is mainly used by one user and the ambient environment sound level of the installation location is almost constant, the initial gain value is set to the user. It converges to the listening volume of personal preference.

[0026]

As described above, according to the present invention,
The initial gain value at the time of changing the receiving sound volume can be automatically set to an optimum value according to the use situation.

[Brief description of the drawings]

FIG. 1 is a block diagram of a main part of a telephone device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of a control unit.

FIG. 3 is a diagram showing a gain value changing state of the present invention in a telephone device used by an unspecified majority.

FIG. 4 is a diagram showing a gain value changing state of the present invention in a telephone device used mainly by one user.

FIG. 5 is a block diagram of a main part of a telephone apparatus having a conventional reception volume changing function.

FIG. 6 is a diagram showing a conventional gain value change situation in a telephone device used by an unspecified majority.

FIG. 7 is a diagram showing a conventional gain value change state in a telephone device used mainly by one user.

[Explanation of symbols]

 Reference Signs List 10 Initial gain value calculation unit 11 Operation unit 12 Control unit 13 Initial gain value storage unit 14 Gain adjustment unit 15 Handset 16 Receiver unit 17 Microphone unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kimitoshi Nakamura 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Tatsunori Takahashi 3--19, Nishishinjuku, Shinjuku-ku, Tokyo No. 2 Nippon Telegraph and Telephone Corporation F-term (reference) 5K027 BB03 DD08 DD14 DD16 FF29

Claims (2)

[Claims] A means for adjusting a gain value of the received sound volume; a means for storing an initial gain value of the received sound volume; a means for increasing and decreasing the initial gain value stored in the storing means in accordance with an operation input; Means for setting the gain value obtained by the increasing / decreasing means as a gain value of the adjusting means, wherein a new initial gain value is set according to the gain value set by the setting means and the initial gain value. A telephone device comprising means for calculating the following. 2. The telephone device according to claim 1, wherein said calculating means includes means for setting an average value of the gain value set by said setting means and said initial gain value as a new initial gain value.