KR970017454A - Voice signal detection circuit of audio reproducing apparatus and method - Google Patents
Voice signal detection circuit of audio reproducing apparatus and method Download PDFInfo
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- 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
- Prior art keywords
- signal
- level
- peak
- voice
- detection
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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
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950033223A KR100195009B1 (en) | 1995-09-30 | 1995-09-30 | Voice signal detection circuit of audio reproducing apparatus and method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950033223A KR100195009B1 (en) | 1995-09-30 | 1995-09-30 | Voice signal detection circuit of audio reproducing apparatus and method |
Publications (2)
Publication Number | Publication Date |
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KR970017454A true KR970017454A (en) | 1997-04-30 |
KR100195009B1 KR100195009B1 (en) | 1999-06-15 |
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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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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100800873B1 (en) | 2005-10-28 | 2008-02-04 | 삼성전자주식회사 | Voice signal detecting system and method |
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1995
- 1995-09-30 KR KR1019950033223A patent/KR100195009B1/en not_active IP Right Cessation
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KR100195009B1 (en) | 1999-06-15 |
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