JPH05110643A - Telephone set with frequency adjustment function - Google Patents

Abstract

PURPOSE:To listen even a speech with much noise clearly by shifting a voice of an opposite party during talking to a frequency band easily listened by itself. CONSTITUTION:When a 'low' position of a reception frequency adjustment switch 13 is depressed at talking, a control section 10 sends a signal to a frequency shift means 12, which shifts the frequency of a reception signal to a lower frequency. Moreover, when a 'high' position of a reception frequency adjustment switch 23 is depressed conversely, the frequency shift means 12 shifts the frequency of the reception signal to a higher frequency. Thus, the user of this telephone set adjusts the frequency shift means 12 to shift the voice of the opposite party in talking to a signal at a frequency band at which the user hears best to continue the talking. Furthermore, an optimum value of a frequency shift to an opposite telephone number is stored in a storage section 14 and a control section 10 sets automatically the shift width of the frequency shift means 12 in a succeeding talking to the same opposite party to an optimum value. The articulation of the received sound is more improved by adjusting the frequency in combination with the sound volume.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device connected to a public telephone line, a private line or the like, and in particular, it is constructed so that the frequency band can be adjusted so that the voice of the other party can be heard easily.

[0002]

2. Description of the Related Art A conventional telephone device of this type, as shown in FIG. 3, comprises a hybrid circuit 1, a receiver amplifier 2, which constitutes a communication path between a public telephone line A and a handset B.
An incoming call detection circuit 4 including a transmission amplifier 3 and constituting an outgoing / incoming call signal path, and an oscillator 5 for sending an incoming call signal.
A ring tone speaker 6, a hook switch 7 that operates in conjunction with raising and lowering of the handset B, and a dial key 8, and a contact 9a for switching between a call path and an incoming / outgoing signal path. A relay having a coil 9c and an earpiece volume adjusting switch 1 as an earpiece volume adjusting means.
1, 21 and a control unit 10 that controls the entire operation.

Next, the operation of this telephone device will be described.

When the handset B is lifted, the hook switch 7 operates and a signal is input to the control unit 10. Control unit 10
This signal causes the relay to operate and close the contact 9a. After that, the control unit 10 sends a dial pulse to the public telephone line A in accordance with the number input from the dial key 8. When the called party answers, the voice signal of the called party enters the hybrid circuit 1 from the public telephone line A, is amplified by the receiving amplifier 2 and is sent to the handset R in the handset B.

When an incoming call signal is sent from the public telephone line A, the incoming call detecting means 4 detects it and inputs the signal to the control unit 10. The control unit 10 operates the transmitter 5 and outputs the ring tone from the ring tone speaker 6. When the handset B is lifted accordingly, the hook switch 7
Operates to activate the relay to close the contact 9a, and the voice signal from the public telephone line A is sent to the handset R in the handset B via the hybrid circuit 1 and the handset amplifier 2.

When a call with the other party is established in this way,
If the other party's voice is difficult to hear because it is too low, or conversely, it is too loud, operate the receiving volume adjustment switches 11 and 21 to adjust the amplification factor of the receiving amplifier and set the receiving volume to an appropriate level. Is possible.

[0007]

However, since the conventional telephone device can only adjust the amplification factor of the receiving amplifier,
There was a problem that sufficient clarity could not be obtained in a noisy call.

The present invention is intended to solve such a problem, and an object of the present invention is to provide a telephone device capable of improving the intelligibility of an incoming call.

[0009]

Therefore, in the present invention, the telephone device is provided with frequency shift means for shifting the frequency of the received signal and adjusting means for adjusting the shift amount of the frequency shift means.

[0010]

Therefore, by adjusting the shift amount of the frequency shift means, the received sound heard from the receiver can be transferred to the frequency band in which the user can hear it most clearly and can talk.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a telephone device of the present invention has a frequency shift means 12 inserted in a communication path and reception frequency adjustment switches 13 and 23 for adjusting the frequency shift means 12.
And a storage unit 14 for storing the adjustment state. The other configurations are the same as those of the conventional telephone device shown in FIG.

As shown in FIG. 2, the frequency shift means 12 is composed of an A / D converter 15, a calculation section 16 and a D / A converter 17, and calculates the frequency of the reception signal converted into a digital signal. After shifting by the section, it is converted into an analog signal again and output.

Next, the operation of the telephone device of the present invention will be described.

The operation from the calling to the establishment of the call by the telephone device of our side or the destination is the same as that of the conventional telephone device.

During this call, if the "low" of the receiving frequency adjusting switch 13 is pressed, the frequency shift means from the control unit 10 is pushed.
The signal is sent to 12, and the frequency shift means 12 shifts the frequency of the received signal to the lower side. On the contrary, when the "high" of the reception frequency adjustment switch 23 is pressed, the frequency shift means 12
Shifts the frequency of the received signal to the higher side.

Therefore, the user of this telephone device adjusts the frequency shift means 12 so that the voice of the other party during the call is
You can continue calling by shifting to the frequency band that is most easy for you to hear.

Further, the optimum value of the frequency shift with respect to the telephone number of the other party is stored in the storage section 14, and the control section 10 causes the frequency shift means to be used in the next call to the same party.
It can also be configured to automatically set the width of 12 shifts to its optimum value.

The intelligibility of the received sound can be further improved by adjusting the volume and the volume in combination. Therefore, by storing the optimum values of the frequency and the volume in the storage unit 14 and automatically setting the frequency shift means 12 and the reception amplifier 2 to the optimum values, the clarity of the reception sound can be improved. It can be further increased.

[0019]

As is apparent from the above description of the embodiments, in the telephone device of the present invention, the voice of the other party during a call can be shifted to a frequency band which is easy for the user to hear, so that even in a noisy call. You can hear clearly.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a telephone device with a frequency adjusting function of the present invention,

FIG. 2 is a block diagram of frequency shift means that is a main part of the telephone device of the present invention.

FIG. 3 is a block diagram showing an example of a conventional telephone device.

[Explanation of symbols]

 A public telephone line B transmitter / receiver 1 hybrid circuit 2 receiver amplifier 3 transmitter amplifier 4 incoming call detection circuit 5 transmitter 6 ringtone speaker 7 hook switch 8 dial key 9a, 9c relay 10 control unit 11, 21 receiver volume adjustment Switch 12 Frequency shift means 13, 23 Reception frequency adjustment switch 14 Storage unit 15 A / D converter 16 Calculation unit 17 D / A converter

Claims (1)

[Claims] 1. A telephone device with a frequency adjusting function, comprising: a frequency shift means for shifting the frequency of a received signal and an adjusting means for adjusting a shift amount of the frequency shift means.