KR940010490A - Audio Sound Quality Control - Google Patents

Audio Sound Quality Control Download PDF

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Publication number
KR940010490A
KR940010490A KR1019920020357A KR920020357A KR940010490A KR 940010490 A KR940010490 A KR 940010490A KR 1019920020357 A KR1019920020357 A KR 1019920020357A KR 920020357 A KR920020357 A KR 920020357A KR 940010490 A KR940010490 A KR 940010490A
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KR
South Korea
Prior art keywords
audio
intermediate frequency
frequency
voltage level
detection circuit
Prior art date
Application number
KR1019920020357A
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Korean (ko)
Inventor
박근
Original Assignee
배순훈
대우전자 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 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019920020357A priority Critical patent/KR940010490A/en
Publication of KR940010490A publication Critical patent/KR940010490A/en

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Abstract

본 발명은 오디오 신호 처리장치에 관한 것으로서, 검출회로(100)를 이용해 오디오 중간주파수 신호의 전압레벨을 검출하고 검출된 전압레벨에 따라 서로 상이한 고역 및 저역 차단 주파수를 갖는 대역필터(BPF1)(BPF2)를 선택적으로 구동시켜 고역 및 저역에 존재하는 노이즈 성분을 감쇄시키고, 오디오 중간주파수 신호의 전압레벨이 소정전압(V1)이하일 때에는 뮤트부(210)를 구동시켜 전대역에 걸쳐 존재하는 노이즈 성분이 스피커에 인가되는 것을 방지한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio signal processing apparatus, wherein the detection circuit 100 detects a voltage level of an audio intermediate frequency signal, and has a band filter BPF1 (BPF2) having different high and low cutoff frequencies according to the detected voltage level. ) Selectively drives the noise components present in the high and low frequencies, and when the voltage level of the audio intermediate frequency signal is less than or equal to the predetermined voltage (V 1 ), the mute unit 210 is driven to This is to prevent the speaker from being applied.

Description

오디오 음질 자동조절장치Audio Sound Quality Control

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

제1도는 본 발명에 따른 오디오 음질 자동조절장치의 블럭도.1 is a block diagram of an audio sound quality automatic control device according to the present invention.

Claims (5)

라이도 주파수의 오디오 신호를 수신하는 튜너(10)와, 상기 튜너의 오디오 신호를 중간 주파수 신호로 주파수 변환시키는 주파수 변환부(70)와 상기 중간주파수의 오디오 신호를 복조처리하는 복조부(90)를 구비하는 오디오 수신처리장치에 있어서, 상기 주파수 변환부(70)의 중간 주파수 신호 전압레벨을 검출하는 검출회로(100)와; 상기 검출회로(100)에 검출된 중간 주파수 신호 전압레벨에 따라 상기 복조부(90)로부터 출력되는 복조된 오디오 신호의 주파수대역을 가변시켜 스피커에 인가하는 주파수 대역 가변회로(200)를 포함하여 구성하는 오디오 음질 자동조절장치.A tuner 10 for receiving an audio signal of the Lydo frequency, a frequency converter 70 for frequency converting the audio signal of the tuner into an intermediate frequency signal, and a demodulator 90 for demodulating the audio signal of the intermediate frequency; An audio receiving processing apparatus comprising: a detection circuit (100) for detecting an intermediate frequency signal voltage level of the frequency converter (70); And a frequency band variable circuit 200 for varying the frequency band of the demodulated audio signal output from the demodulator 90 and applying it to the speaker according to the intermediate frequency signal voltage level detected by the detection circuit 100. Audio sound quality automatic device. 제1항에 있어서, 상기 검출회로(100)는, 상기 주파수 변환부(70)의 오디오 중간 주파수 신호를 증폭하여 출력하는 증폭부(110)와; 상기 증폭부(110)의 출력을 정류하여 출력하는 정류부(120)와; 상기 정류부(120)의 출력을 저역필터링하여 직류전압화 하는 저역통과 필터부(130)와, 상기 저역통과 필터부(130)의 직류전압레벨을 검출하는 레벨검출부(140)를 구비하는 오디오 음질 자동조절장치.2. The apparatus of claim 1, wherein the detection circuit (100) comprises: an amplifier (110) for amplifying and outputting an audio intermediate frequency signal of the frequency converter (70); A rectifier 120 for rectifying and outputting the output of the amplifier 110; Audio quality automatic including a low pass filter 130 for low-pass filtering the output of the rectifier 120 to the DC voltage, and a level detector 140 for detecting the DC voltage level of the low pass filter 130 Regulator. 제1항에 있어서, 상기 주파수 대역 가변회로(200)는, 상기 검출회로(100)에 검출된 중간 주파수 전압레벨에 따라 선택적으로 구동하는 서로 상이한 고역 및 저역차단 주파수를 갖는 다수의 대역필터(BPF1, BPF2)를 구비하는 오디오 음질 자동조절장치.The frequency band variable circuit 200 includes a plurality of band filters BPF1 having different high and low pass frequencies, which are selectively driven according to the intermediate frequency voltage level detected by the detection circuit 100. , BPF2) audio sound quality automatic control device. 제1항에 있어서, 상기 주파수 대역가변회로(200)에 연결되며, 상기 검출회로(100)에 검출된 중간 주파수 신호 전압레벨이 소정전압이하일 때 구동하여 상기 주파수대역 가변회로(200)의 오디오 신호를 뮤트시키는 뮤트부(210)를 더 구비하는 오디오 음질 자동조절장치.The audio signal of the frequency band variable circuit 200 is connected to the frequency band variable circuit 200 and is driven when the intermediate frequency signal voltage level detected by the detection circuit 100 is less than or equal to a predetermined voltage. Audio sound quality automatic control device further comprising a mute unit 210 to mute. 제2항에 있어서, 상기 레벨검출부(140)는, 서로 상이한 기준전압과 상기 저역통과 필터부(130)의 출력전압을 비교하는 다수의 비교기(CP1∼CP3)들은 구비하는 오디오 음질자동 조절장치.The apparatus of claim 2, wherein the level detection unit (140) comprises a plurality of comparators (CP1 to CP3) for comparing different reference voltages and output voltages of the low pass filter unit (130). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920020357A 1992-10-31 1992-10-31 Audio Sound Quality Control KR940010490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920020357A KR940010490A (en) 1992-10-31 1992-10-31 Audio Sound Quality Control

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Application Number Priority Date Filing Date Title
KR1019920020357A KR940010490A (en) 1992-10-31 1992-10-31 Audio Sound Quality Control

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KR940010490A true KR940010490A (en) 1994-05-26

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KR1019920020357A KR940010490A (en) 1992-10-31 1992-10-31 Audio Sound Quality Control

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180027752A (en) * 2016-09-07 2018-03-15 삼성전자주식회사 Method for fabricating semiconductor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180027752A (en) * 2016-09-07 2018-03-15 삼성전자주식회사 Method for fabricating semiconductor device

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