JPS60169258A - Side tone controlling telephone set - Google Patents

Side tone controlling telephone set

Info

Publication number
JPS60169258A
JPS60169258A JP2343584A JP2343584A JPS60169258A JP S60169258 A JPS60169258 A JP S60169258A JP 2343584 A JP2343584 A JP 2343584A JP 2343584 A JP2343584 A JP 2343584A JP S60169258 A JPS60169258 A JP S60169258A
Authority
JP
Japan
Prior art keywords
transmitter
output
receiver
side tone
detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2343584A
Other languages
Japanese (ja)
Inventor
Hitoshi Ogura
均 小倉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2343584A priority Critical patent/JPS60169258A/en
Publication of JPS60169258A publication Critical patent/JPS60169258A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits
    • H04M1/585—Anti-side-tone circuits implemented without inductive element

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To prevent the deterioration of voice quality of an output voice of a receiver by providing a circuit measuring an output level from a transmitter to control the amplitude of side tone from the transmitter to the receiver. CONSTITUTION:The receiver 1 is connected to the receiver 3 and a side tone path 4 through a synthesizer 2. Further, the transmitter 5 is connected to a detector 7 and a cotroller 8 through a transmission line 6, the controller 8 gives an output 4 in response to an output of the detector of the transmission level and a level of the transmission line 6 and the result is inputted to the synthesizer 2. Thus, when no input voice is given to the transmitter 5, no side tone is inputted to the receiver 1, while the transmitter 5 has an output, the detector transmits a side tone in response to the amplitude of the output. Thus, the deterioration of the output voice of the receiver 1 caused by surrounding noise is prevented.

Description

【発明の詳細な説明】 （技術分野） 本発明は電話機に関し、送話器から受話機への側音の音
量を送話器の出力にしたがって可変にすることによシ、
周囲雑音による受話器からの出力音声の音質劣化を軽減
する電話機に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a telephone set, and the present invention relates to a telephone set, in which the volume of sidetone transmitted from a transmitter to a receiver is made variable according to the output of the transmitter.
The present invention relates to a telephone set that reduces deterioration in sound quality of output audio from a handset due to ambient noise.

（従来技術） 従来の電話機では、送話器から受話器への側音り音量は
送話器の出力が太き（なるとそれにしたがって大きくな
るため、周囲の雑音が大きい場合、周囲の雑音による側
音も犬さくなって相手電話機からの受話器への出力音声
の音質を劣化させるという欠点があった。゛ （発明の目的） 本発明ではこの欠点を解決するために、送話器への音声
入力が検出されなければ、送話器から受話器：への側音
の音量、を小ざ＜シ、受話器の出力音戸の音質劣化を軽
減できるよりにした見話徐を提供するものである。(Prior art) With conventional telephones, the volume of sidetone from the transmitter to the receiver increases as the output of the transmitter becomes thicker (the louder the output becomes). This has the disadvantage that the sound quality of the output voice from the other party's telephone to the handset is degraded.(Objective of the Invention) In order to solve this disadvantage, the present invention provides a method for inputting voice to the handset. If it is not detected, the volume of the sidetone from the transmitter to the receiver is reduced, thereby providing a hearing aid that can reduce the deterioration of the sound quality of the output sound of the receiver.

（発明の構成） 従来の電話機において、周囲からの雑音があると、周囲
からの雑音が送話器から受話器への側音として受信音声
に型費され音質が／／ｉ化するという欠点があった。こ
の音質劣化を軽減するため、送話器の出力を検出する回
路と、送話器から受話器への側音の音知、を制御する回
路を持たせ、送話器の出力にしたがって、送話器への側
音のｉｔ量を制御する。(Structure of the Invention) Conventional telephones have the disadvantage that when there is noise from the surroundings, the noise from the surroundings is absorbed into the received voice as sidetone from the transmitter to the receiver, causing the sound quality to become //i. Ta. In order to reduce this sound quality deterioration, a circuit that detects the output of the transmitter and a circuit that controls sidetone detection from the transmitter to the receiver are installed, and the transmitter transmits the voice according to the output of the transmitter. Controls the amount of sidetone to the instrument.

（実施例） 本発明による電話機の回路図を示す図を参照すると、受
話器１は合成器２を通して受話路３と側音路４に、送話
器５は送量路６と検出器７と制御器８に、制御器８は検
出器７からの制御線９と送話路６と側音路４に接続され
ている。送話器５の出力は検出器７に入力し、検出器７
は音声出力があると判定すると制御線９を通して側音の
音量を増す。Embodiment Referring to the figure showing the circuit diagram of a telephone according to the invention, a handset 1 is connected to a receive channel 3 and a side channel 4 through a synthesizer 2, a transmitter 5 is connected to a transmit channel 6 and a detector 7, and a transmitter 5 is connected to a transmit channel 6 and a detector 7. The controller 8 is connected to the control line 9 from the detector 7, the transmission path 6, and the side sound path 4. The output of the transmitter 5 is input to the detector 7,
If it determines that there is audio output, it increases the volume of the sidetone through the control line 9.

（発明の効果） 本発明は以上説明したように、電話機の送話器の出力に
したがって、送話器から受話器への側音の音量を制御す
ることによシ、周囲の雑音によシ生ずる受話器の出力音
声の音質の劣化を軽減することができる。(Effects of the Invention) As explained above, the present invention controls the volume of sidetone transmitted from the transmitter to the receiver according to the output of the transmitter of the telephone, thereby reducing noise caused by surrounding noise. It is possible to reduce deterioration in the sound quality of the output audio from the receiver.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明の一実施例の構成を示す。 １・・・・・・受話器、２・・・・・・合成器、３・・
・・・・受話路、４・・・・・・側音路、５・・・・・
・送話器、６・・・・・・送話器、７パ°・・・検出器
、８・・・・・・制御器、９・・・・・・制御線。The figure shows the configuration of an embodiment of the present invention. 1...Telephone receiver, 2...Synthesizer, 3...
... Receive channel, 4... Lateral sound channel, 5...
- Transmitter, 6... Transmitter, 7... Detector, 8... Controller, 9... Control line.

Claims (1)

【特許請求の範囲】[Claims] 送話器の出力を検出する回路と、前記送話器から受話器
への側音の音量を制御する回路を持ち、前記送話器の出
力にしｌζがって前記受話器への側音の音量を制御する
ことを特徴とする電話機。The circuit includes a circuit for detecting the output of the transmitter and a circuit for controlling the volume of sidetone transmitted from the transmitter to the receiver, and controls the volume of sidetone transmitted to the receiver according to the output of the transmitter. A telephone characterized by controlling.
JP2343584A 1984-02-10 1984-02-10 Side tone controlling telephone set Pending JPS60169258A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2343584A JPS60169258A (en) 1984-02-10 1984-02-10 Side tone controlling telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2343584A JPS60169258A (en) 1984-02-10 1984-02-10 Side tone controlling telephone set

Publications (1)

Publication Number Publication Date
JPS60169258A true JPS60169258A (en) 1985-09-02

Family

ID=12110422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2343584A Pending JPS60169258A (en) 1984-02-10 1984-02-10 Side tone controlling telephone set

Country Status (1)

Country Link
JP (1) JPS60169258A (en)

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