JPS62278858A - Telephone set - Google Patents

Abstract

PURPOSE:To adjust a transmitting sound up to the specified volume in accordance with the size of a transmitting volume and to smoothly attain the communication by providing a function to be able to adjust automatically the transmitting volume into the scope where upper limit and lower limit volume reference values are specified. CONSTITUTION:By the switching of a switching device 1, the transmitting sound (b) of a caller using a microphone 8 or a handset 9 is sent through a volume variable adjusting device 2, an amplifier 3 and a hybrid circuit 10 to the external part. A transmitting sound b' through the volume variable adjusting device 2 and the amplifier 3 is converted to digital sound data (d) by an A/D converter 4, compared with lower limit volume reference data (e) outputted from a CPU 5, by a first digital comparator 6 and compared with upper limit volume reference data (f) outputted from the CPU 5 by a second digital comparator 7. From digital comparators 6 and 7, lower limit or upper limit comparing result data (g) and (h) are respectively sent to the CPU 5. The CPU 5 sends transmitting volume control data (i) in accordance with comparing data (g) or (h) to the volume variable control data (i) and adjusts and sets the volume of the transmitting sound (b).

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone set, and more particularly to a telephone set with an automatic transmission volume adjustment function.

[Conventional technology]

Conventional telephones do not have a function to automatically adjust the volume output from the microphone or transmitter to within a certain standard volume range, and the transmitted sound is only amplified by a certain amplification factor. Ta.

[Problem that the invention seeks to solve]

Conventional telephones do not have a function to automatically adjust the volume output from the microphone or transmitter to within a certain reference volume range, so if the volume of the transmitted sound is too low or too loud, the other party This method has the drawback of causing problems such as difficulty in hearing the speaker or difficulty in hearing the speaker, which impedes communication.

[Means for solving problems]

The telephone set of the present invention includes a variable volume adjuster that increases or decreases the transmitting volume of a transmitting sound source based on transmitting volume control data, and A-- that converts the output from the variable volume adjuster into digital audio data.
a D converter, a digital comparator that compares the digital audio data with lower limit and upper limit reference data, and transmits the upper and lower limit reference data, performs judgment processing based on input of comparison result data from the digital comparator, and transmits the data. The apparatus includes a central control unit (hereinafter referred to as CPU) that transmits speech volume control data and automatically adjusts the transmitted speech sound within the range of the lower limit and upper limit volume reference data.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

The telephone of this embodiment has a switch 1 that switches the connection of the transmission line 11 to the handset 9 side as a transmission sound source or the microphone 8 (!1), and the volume of the transmission sound on the transmission line 11. a variable volume adjuster 2 and an amplifier 3 that increase or decrease the volume according to the transmission volume control data i, and a hybrid circuit 10 that combines the reception sound C and the transmission sound b' whose volume has been increased or decreased to transmit and receive the handset a. , an A-D converter 4 that converts the transmitted speech sound b' whose volume has been increased or decreased into digital audio data d, and a first digital comparator 6 that compares the digital audio data d with lower limit volume reference data e; a second digital comparator 7 for comparing digital audio data d with upper limit volume reference data f; and lower and upper limit volume reference data e.

f, and performs judgment processing by inputting lower limit comparison result data g from the first digital comparator 6 or upper limit comparison result data h from the second digital comparator 7, and sends out voice volume control data i. , and a CPU 5 that automatically adjusts the transmitted voice within the range of the lower limit and upper limit volume reference data e, f.

Next, the operation of this embodiment will be explained.

Microphone 8 or handset 9 by switching switch 1
2. Adjust the volume of the caller's voice using the variable volume adjuster. The signal is sent to the outside via the amplifier 3 and the hybrid circuit 1o.

On the other hand, the transmission sound b via the variable volume adjuster 2 and the amplifier 3
' is converted into digital audio data d by the AD converter 4. This digital audio data d is compared with the lower limit volume reference data e outputted from the CPU 5 in a first digital comparator 6, and also compared with the upper limit volume reference data f outputted from the CPU 5 in a second digital comparator 7. be done.

If the volume of the transmitted voice is low and the digital audio data d is smaller than the lower limit volume reference data e, the lower limit comparison result data g is sent from the first digital comparator 6 to the CPU 5; If the digital audio data d is larger than the upper limit volume reference data f, the second digital comparator 7 sends upper limit comparison result data h to the CPU 5.

In the case of inputting the lower limit comparison data g, the CPU 5 outputs voice volume control data i in the direction of increasing the volume of the voice tones corresponding to that data, and in the case of inputting the upper limit comparison result data h, the CPU 5 generates voice volume control data i in the direction of increasing the volume of the voice tones corresponding to that data. Transmission volume control data i in the direction of lowering the volume of the transmission sound is sent to the volume variable adjuster 2 to adjust and set the volume of the transmission sound.

The transmitted speech sound b′ adjusted in this way is sent to the A-D converter 4 again.
The output signal is digitally converted and compared as described above, and the volume of the transmitted voice is automatically adjusted so that it falls within the upper and lower volume reference values.

〔Effect of the invention〕

As explained above, the present invention has a function that allows the transmitting volume to be adjusted within a predetermined range of the upper and lower volume reference values, so that the transmitting volume can be adjusted up to a specified volume depending on the volume of the transmitting volume. It has the effect of adjusting the speech tone and making calls smoother6.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Switcher, 2... Volume variable adjuster, 3... Amplifier, 4... A-D converter, 5... Central control device (
CPU), 6.7...Digital comparator, 8...Microphone, 9...Handset, 10...Hybrid circuit, 11...Talking line, a...Handset, b, b'
... Sending sound, C... Receiving sound, d... Digital audio data, e... Lower limit volume reference data, f... Upper limit volume reference data, g... Lower limit comparison result data, h ...
Upper limit comparison result data, i...Speech volume control data.

Claims (1)

[Claims] a volume variable regulator that increases or decreases the transmission volume of a transmission sound source according to transmission volume control data; an A-D converter that converts the output from the volume variable regulator into digital audio data; and a lower limit of the digital audio data. and a digital comparator for comparing with the lower limit and upper limit reference data, and transmits the lower limit and upper limit reference data, performs judgment processing based on input of comparison result data from the digital comparator, and sends out voice volume control data, and transmits the voice volume control data. A telephone set comprising: a central control unit that automatically adjusts the sound within the range of the lower limit and upper limit volume reference data.