KR970017454A - Voice signal detection circuit of audio reproducing apparatus and method - Google Patents

Voice signal detection circuit of audio reproducing apparatus and method Download PDF

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Publication number
KR970017454A
KR970017454A KR1019950033223A KR19950033223A KR970017454A KR 970017454 A KR970017454 A KR 970017454A KR 1019950033223 A KR1019950033223 A KR 1019950033223A KR 19950033223 A KR19950033223 A KR 19950033223A KR 970017454 A KR970017454 A KR 970017454A
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South Korea
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signal
level
peak
voice
detection
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KR1019950033223A
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Korean (ko)
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KR100195009B1 (en
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이철희
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김광호
삼성전자 주식회사
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Publication of KR970017454A publication Critical patent/KR970017454A/en
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  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

음성재생장치의 음성신호 검출회로에 관한 것이다.A voice signal detection circuit of a voice reproducing apparatus.

2. 발명이 해결하려고 하는 기술적 과제2. The technical problem to be solved by the invention

본 발명은 잡음제거레벨과 음성최소레벨을 두어 상기 잡음제거레벨에 의해 음성신호에 포함되어 있는 잡음을 제거하고, 상기 음성최소레벨에 따라 음성의 입력의 유무를 검출하는 음성신호 검출회로 및 그 방법을 제공함에 있다.The present invention provides a voice signal detection circuit and method for removing noise included in a voice signal by using the noise cancellation level and the voice minimum level, and detecting the presence or absence of voice input according to the voice minimum level. In providing.

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

소정 기록매체로부터 입력된 음성신호에 포함되어 있는 잡음을 잡음제거레벨에 의해 제거한 뒤 차동증폭 레벨만큼 증폭하여 차동증폭신호로 출력하는 과정과; 상기 차동증폭신호에 포함되어 있는 교류성분을 제거하여 피크신호를 발생하는 과정과; 상기 피크신호의 레벨과 기준피크신호의 레벨을 비교하여 피크검출신호를 발생한 뒤 상기 피크검출제어신호에 대응하여 상기 기준피크신호의 레벨을 조절하는 과정으로 마련한다.Removing noise included in a voice signal input from a predetermined recording medium by a noise canceling level, amplifying the signal by a differential amplification level, and outputting the differential amplified signal; Generating a peak signal by removing an AC component included in the differential amplified signal; The peak detection signal is generated by comparing the level of the peak signal with the level of the reference peak signal, and then the level of the reference peak signal is adjusted in response to the peak detection control signal.

4. 발명의 중요한 장도4. Important chapter of the invention

음성재생장치에 있어서 음성신호 검출에 이용된다.It is used to detect a voice signal in an audio reproducing apparatus.

※ 선택도 : 제2도※ Selectivity: 2nd

Description

음성재생장치의 음서신호 검출회로 및 그 방법Sound signal detection circuit of audio reproducing apparatus and method

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

제1도는 종래 음성재생장치의 음성신호 검출회로의 볼록 구성도,1 is a convex configuration diagram of a speech signal detection circuit of a conventional speech reproduction apparatus;

제2도는 본 발명에 따른 음성재생장치의 음성신호 검출회로의 블록 구성도,2 is a block diagram of a voice signal detecting circuit of the voice reproducing apparatus according to the present invention;

제3도는 본 발명에 따른 각 부분의 동작 파형도.3 is an operational waveform diagram of each part according to the present invention.

Claims (2)

음성재생장치의 음성신호 검출회로에 있어서, 소정 기록매체로부터 입력된 음성신호를 차동증폭레벨만큼 증폭하여 차동증폭신호로 출력하는 차동증폭수단과; 잡음제거레벨을 가지고 있으며, 상기 잡음제거레벨에 의해 상기 음성신호에 포함되어 있는 잡음을 제거하고 상기 잡음제거레벨 이하의 상기 음성신호를 제거하는 레벨제한수단과, 상기 차동증폭신호에 포함되어 있는 교류성분을 제거하여 피크신호를 발생한 뒤 상기 피크신호의 레벨을 검출하는 피크신호 레벨검출수단과; 상기 피크신호의 레벨과 기준피크신호의 레벨을 비교하여 퍼크검출신호를 발생하는 피크신호 비교수단과; 상기 피크검출신호에 대응하여 피크검출제어신호를 발생하는 신호출력수단과; 상기 피크검출제어신호의 레벨에 대응하여 상기 기준피크신호의 레벨을 조절하는 레벨조절수단으로 이루어짐을 특징으로 하는 음성신호 검출회로.A voice signal detecting circuit of a voice reproducing apparatus, comprising: differential amplifying means for amplifying a voice signal input from a predetermined recording medium by a differential amplification level and outputting the same as a differential amplifying signal; A level limiting means for removing noise contained in the speech signal by the noise canceling level and removing the speech signal below the noise canceling level; and an AC included in the differential amplification signal. Peak signal level detection means for removing a component to generate a peak signal and detecting the level of the peak signal; Peak signal comparison means for generating a perc detection signal by comparing the level of the peak signal with the level of the reference peak signal; Signal output means for generating a peak detection control signal in response to the peak detection signal; And a level adjusting means for adjusting the level of the reference peak signal corresponding to the level of the peak detection control signal. 음성신호 검출회로의 음성신호 검출방법에 있어서, 소정 기록매체로부터 입력된 음성신호에 포함되어 있는 잡음을 잡음제거레벨에 의해 제거한 뒤 차동증폭 레벨만큼 증폭하여 차동증폭신호로 출력하는 과정과; 상기 차동증폭신호에 포함되어 있는 교류성분을 제거하여 피크신호를 발생하는 과정과; 상기 피크신호의 레벨과 기준피크신호의 레벨을 비교하여 피크검출신호를 발생한 뒤 상기 피크검출제어신호에 대응하여 상기 기준피크신호의 레벨을 조절하는 과정으로 이루어짐을 특징으로 하는 음성신호 검출방법.A voice signal detection method of a voice signal detection circuit, the method comprising: removing a noise included in a voice signal input from a predetermined recording medium by a noise cancellation level, amplifying the signal by a differential amplification level, and outputting the differential amplification signal; Generating a peak signal by removing an AC component included in the differential amplified signal; And generating a peak detection signal by comparing the level of the peak signal with the level of the reference peak signal, and then adjusting the level of the reference peak signal in response to the peak detection control signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950033223A 1995-09-30 1995-09-30 Voice signal detection circuit of audio reproducing apparatus and method KR100195009B1 (en)

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KR1019950033223A KR100195009B1 (en) 1995-09-30 1995-09-30 Voice signal detection circuit of audio reproducing apparatus and method

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KR1019950033223A KR100195009B1 (en) 1995-09-30 1995-09-30 Voice signal detection circuit of audio reproducing apparatus and method

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KR970017454A true KR970017454A (en) 1997-04-30
KR100195009B1 KR100195009B1 (en) 1999-06-15

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KR100800873B1 (en) 2005-10-28 2008-02-04 삼성전자주식회사 Voice signal detecting system and method

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