KR890001334A - Audio signal AGC circuit of CO line interface device - Google Patents

Audio signal AGC circuit of CO line interface device Download PDF

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Publication number
KR890001334A
KR890001334A KR1019870006591A KR870006591A KR890001334A KR 890001334 A KR890001334 A KR 890001334A KR 1019870006591 A KR1019870006591 A KR 1019870006591A KR 870006591 A KR870006591 A KR 870006591A KR 890001334 A KR890001334 A KR 890001334A
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KR
South Korea
Prior art keywords
circuit
output
signal
voice signal
gain
Prior art date
Application number
KR1019870006591A
Other languages
Korean (ko)
Inventor
최종석
Original Assignee
강진구
삼성반도체통신 주식회사
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 강진구, 삼성반도체통신 주식회사 filed Critical 강진구
Priority to KR1019870006591A priority Critical patent/KR890001334A/en
Publication of KR890001334A publication Critical patent/KR890001334A/en

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Abstract

내용 없음No content

Description

국선인터페이스 장치의 음성신호 AGC회로Audio signal AGC circuit of CO line interface device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명을 수행하기 위한 시스템도,2 is a system diagram for carrying out the present invention;

제3도는 본 발명에 따른 흐름도.3 is a flow chart according to the present invention.

Claims (1)

국선인터페이스 장치의 음성신호 자동이득조절 회로에 있어서, 신호 입력단자(Pin)에 접속되어 선로로부터 입력된 입력음성 신호(Vin)를 소정 증폭하고 잡음을 선별하는 잡음선별회로(10)와, 상기 잡음선별회로(10)에 접속되어 상기 잡음 선별회로(10)에서 소정 증폭되어 출력된 상기 입력 음성신호로부터 피크 레벨을 검출하여 동작하는 제1포락선 검출회로(20)와, 상기 입력단자(Pin)에 접속되어 입력된 음성신호(Vin)를 소정이득에 따라 분배하는 이득분배회로(30)와, 신호출력단자(pout)에 접속되어 출력음성신호(Vout)를 소정 증폭하여 기준 레벨의 검출되도록 하는 기준레벨 검출회로(70)와, 상기 기준레벨 검출회로(70)에 접속되어 상기 기준레벨 검출호로(70)에서 소정 증폭되어 출력된 상기 출력음성 신호로부터 피크레벨을 검출하여 동작하는 제2포락선 검출회로(60)와, 상기 제1포락선 회로(20) 및 제2포락선 검출회로(60)에 의하여 결정된 소정 증폭도에 따라 상기 이득분배회로(30)에서 출력된 입력음성신호(Vin)를 이득조정하여 증폭 출력하는 이득 제어회로(40)와, 상기 이득 제어회로(40)에서 이득 조정되어 출력된 음성신호를 버퍼링하여 신호 출력단자(Pout)로 출력하는 버퍼증폭회로(50)로 구성함을 특징으로 하는 음성신호 자동이득 조절회로.A voice signal automatic gain control circuit of a trunk line interface device, comprising: a noise selection circuit (10) connected to a signal input terminal (Pin), for amplifying a predetermined input voice signal (Vin) input from a line, and selecting noise; A first envelope detecting circuit 20 connected to the sorting circuit 10 and operating by detecting a peak level from the input voice signal which is amplified and output from the noise sorting circuit 10 and the input terminal Pin. A gain distribution circuit 30 for distributing the connected and input voice signal Vin according to a predetermined gain, and a reference for being connected to the signal output terminal pout and amplifying the output voice signal Vout by predetermined amplification so as to detect a reference level. Second envelope detection connected to the level detecting circuit 70 and the reference level detecting circuit 70 and operating by detecting a peak level from the output audio signal which is amplified and output from the reference level detecting arc 70. Gain adjustment of the input audio signal Vin output from the gain distribution circuit 30 according to a predetermined amplification degree determined by the furnace 60 and the first envelope circuit 20 and the second envelope detection circuit 60 A gain control circuit 40 for amplifying and outputting a buffer amplifier circuit 50 for buffering the audio signal gain-adjusted and output by the gain control circuit 40 and outputting the signal to the signal output terminal Pout. Voice signal automatic gain control circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019870006591A 1987-06-27 1987-06-27 Audio signal AGC circuit of CO line interface device KR890001334A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019870006591A KR890001334A (en) 1987-06-27 1987-06-27 Audio signal AGC circuit of CO line interface device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019870006591A KR890001334A (en) 1987-06-27 1987-06-27 Audio signal AGC circuit of CO line interface device

Publications (1)

Publication Number Publication Date
KR890001334A true KR890001334A (en) 1989-03-20

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ID=68279781

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870006591A KR890001334A (en) 1987-06-27 1987-06-27 Audio signal AGC circuit of CO line interface device

Country Status (1)

Country Link
KR (1) KR890001334A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100403734B1 (en) * 2001-10-27 2003-10-30 삼성전자주식회사 Circuit for adjusting background sound depending on transmitting/receiving voice in a communication terminal equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100403734B1 (en) * 2001-10-27 2003-10-30 삼성전자주식회사 Circuit for adjusting background sound depending on transmitting/receiving voice in a communication terminal equipment

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