KR100443703B1 - 무선수신기의오디오응답동적변경방법및장치 - Google Patents
무선수신기의오디오응답동적변경방법및장치 Download PDFInfo
- Publication number
- KR100443703B1 KR100443703B1 KR10-1998-0707861A KR19980707861A KR100443703B1 KR 100443703 B1 KR100443703 B1 KR 100443703B1 KR 19980707861 A KR19980707861 A KR 19980707861A KR 100443703 B1 KR100443703 B1 KR 100443703B1
- Authority
- KR
- South Korea
- Prior art keywords
- audio
- ambient noise
- noise level
- audio frequency
- audio response
- 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.)
- Expired - Lifetime
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/005—Combinations of two or more types of control, e.g. gain control and tone control of digital or coded signals
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
- H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
- H03G9/14—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for gain control and tone control
Landscapes
- Circuit For Audible Band Transducer (AREA)
- Mobile Radio Communication Systems (AREA)
- Circuits Of Receivers In General (AREA)
- Noise Elimination (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
Description
Claims (21)
- 무선 수신기의 오디오 응답을 동적으로 변경시키는 방법으로서,(a) 마이크로폰 입력을 사용하여 주위 잡음 레벨을 샘플링함으로써 상기 주위 잡음 레벨을 결정하는 단계와;(b) 상기 주위 잡음 레벨에 따라서 오디오 응답 함수를 결정하는 단계와;(c) 충실도와 관계없이 높은 오디오 주파수 이득를 위하여 낮은 오디오 주파수의 이득을 희생시킴으로써 오디오 응답 함수에 따라서 상기 무선 수신기의 오디오 응답을 조절하는 단계를 포함하는 무선 수신기의 오디오 응답 동적 변경 방법.
- 제 1 항에 있어서,상기 단계(b)는 오디오 파라미터의 어레이를 액세스하고 상기 샘플링된 주위 잡음 레벨에 대응하는 파라미터를 선택함으로써 실행되는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 방법.
- 제 1 항에 있어서,주위 잡음 레벨의 범위에 대응하는 오디오 파라미터의 어레이를 규정하기 위하여 수신 오디오 통과대역을 적어도 저 주파수 및 고 주파수 서브 대역으로 분할하는 단계를 더 포함하는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 방법.
- 제 3 항에 있어서,상기 단계(b)는 상기 오디오 파라미터의 어레이를 액세스하고 상기 샘플링된 주위 잡음 레벨에 대응하는 파라미터를 선택함으로써 실행되는 것을 특징으로 하는 무 선 수신기의 오디오 응답 동적 변경 방법.
- 제 1 항에 있어서,상기 단계(c)는 낮은 오디오 주파수 이득에 대하여 높은 오디오 주파수 이득을 조절하는 단계(d)에 의해 실행되는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 방법.
- 제 5 항에 있어서,상기 주위 잡음 레벨이 증가할 때, 상기 단계(d)는 상기 낮은 오디오 주파수에 대하여 상기 높은 오디오 주파수의 이득을 증가시킴으로써 실행되는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 방법.
- 제 1 항에 있어서,상기 단계(b)는 상기 주위 잡음 레벨에 따라서 오디오 응답 메시지를 형성함으로써 실행되는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 방법.
- 제 7 항에 있어서,상기 단계(c)에 앞서, 디지털 신호 처리기(DSP)에 상기 오디오 응답 메시지를 전송하는 단계를 더 포함하는데, 상기 단계(c)는 상기 DSP에 의해 실행되는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 방법.
- 제 7 항에 있어서,상기 단계(c)에 앞서, 상기 오디오 응답 메시지로부터 오디오 응답 파라미터를 추출하여 상기 오디오 응답 파라미터를 디지털 신호 처리기 필터 루틴으로 대체시키는 단계를 더 포함하는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 방법.
- 제 1 항에 있어서,상기 단계(b)는 전용 필터 회로의 응답을 수정함으로써 실행되는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 방법.
- 무선 수신기의 오디오 응답을 동적으로 변경시키는 방법으로서,(a) 마이크로폰 입력을 사용하여 주위 잡음 레벨을 샘플링함으로써 상기 주위 잡음 레벨을 결정하는 단계 및,(b) 충실도와 관계없이 높은 오디오 주파수 이득을 위하여 낮은 오디오 주파수 이득을 희생시킴으로써 상기 주위 잡음 레벨에 따라서 낮은 오디오 주파수 이득에 대하여 높은 오디오 주파수 이득을 조절하는 단계를 포함하는 무선 수신기의 오디오 응답 동적 변경 방법.
- 제 11 항에 있어서,상기 주위 잡음 레벨이 증가할 때, 상기 단계(b)는 상기 낮은 오디오 주파수에 대하여 상기 높은 오디오 주파수 이득을 증가시킴으로써 실행되는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 방법.
- 무선 수신기의 오디로 응답을 동적으로 변경시키는 장치로서,주위 잡음 레벨을 샘플링하는 마이크로폰 입력을 구비하여 상기 주위 잡음 레벨을 결정하는 수단과,상기 주위 잡음 레벨에 따라서 오디오 응답 메시지를 형성하는 제어기 및;충실도와 관계없이 높은 오디오 주파수의 이득을 위하여 낮은 오디오 주파수의 이득을 희생시킴으로써 상기 오디오 응답 메시지에 따라서 무선 수신기의 오디오 응답을 조절하는 디지털 신호 처리기(DSP)를 구비하는 무선 수신기의 오디오 응답 동적 변경 장치.
- 제 13 항에 있어서,상기 제어기는 오디오 파라미터의 어레이를 액세스하고 상기 샘플링된 주위 잡음 레벨에 대응하는 파라미터를 선택함으로써 상기 오디오 응답 메시지를 형성하는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 장치.
- 제 13 항에 있어서,상기 제어기는 주위 잡음 레벨의 범위에 대응하는 오티오 파라미터의 어레이를 규정하기 위하여 수신 오디오 통과대역을 적어도 저 주파수 및 고 주파수 서브대역으로 분할하는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 장치.
- 제 15 항에 있어서,상기 제어기는 상기 오디오 파라미터의 어레이를 액세스하고 상기 샘플링된 주위 잡음 레벨에 대응하는 파라미터를 선택함으로써 상기 오디오 응답 메시지를 형성하는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 장치.
- 제 13 항에 있어서,상기 DSP는 낮은 오디오 주파수 이득에 대하여 높은 오디오 주파수 이득을 조절함으로써 상기 무선 수신기의 오디오 응답을 조절하는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 장치.
- 제 17 항에 있어서,상기 DSP는 상기 주위 잡음 레벨이 증가할 때 상기 낮은 오디오 주파수에 대하여 상기 높은 오디오 주파수 이득을 증가시킴으로써 상기 오디오 응답을 조절하는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 장치.
- 제 13 항에 있어서,상기 DSP는 상기 오디오 응답 메시지로부터 오디오 응답 파라미터를 추출하여 상기 오디오 응답 파라미터를 DSP 필터 루틴으로 대체시키는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 장치.
- 무선 수신기의 오디오 응답을 동적으로 변경시키는 장치로서,주위 잡음 레벨을 샘플링하는 마이크로폰 입력을 구비하여 상기 주위 잡음 레벨을 결정하는 수단 및,충실도와 관계없이 높은 오디오 주파수의 이득을 위하여 낮은 오디오 주파수의 이득을 희생시킴으로써 상기 주위 잡음 레벨에 따라서 낮은 오디오 주파수 이득에 대하여 높은 오디오 주파수 이득을 조절하는 수단을 구비하는 무선 수신기의 오디오 응답 동적 변경 장치.
- 제 20 항에 있어서,상기 조절 수단은 상기 주위 잡음 레벨이 증가할 때 낮은 오디오 주파수에 대하여 높은 오디오 주파수의 이득을 증가시키는 것을 특징으로 하는 무선 수신기의 오디오 응답 동적 변경 장치.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/626,908 | 1996-04-04 | ||
US08/626,908 US5790671A (en) | 1996-04-04 | 1996-04-04 | Method for automatically adjusting audio response for improved intelligibility |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000005187A KR20000005187A (ko) | 2000-01-25 |
KR100443703B1 true KR100443703B1 (ko) | 2004-11-10 |
Family
ID=24512376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-1998-0707861A Expired - Lifetime KR100443703B1 (ko) | 1996-04-04 | 1997-04-02 | 무선수신기의오디오응답동적변경방법및장치 |
Country Status (11)
Country | Link |
---|---|
US (1) | US5790671A (ko) |
EP (1) | EP0891652B1 (ko) |
JP (1) | JP4057062B2 (ko) |
KR (1) | KR100443703B1 (ko) |
CN (1) | CN1098559C (ko) |
AU (1) | AU709329B2 (ko) |
BR (1) | BR9708516A (ko) |
DE (1) | DE69719739D1 (ko) |
MY (1) | MY113948A (ko) |
PL (1) | PL182745B1 (ko) |
WO (1) | WO1997038488A1 (ko) |
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- 1997-04-02 KR KR10-1998-0707861A patent/KR100443703B1/ko not_active Expired - Lifetime
- 1997-04-02 WO PCT/US1997/005516 patent/WO1997038488A1/en active IP Right Grant
- 1997-04-02 JP JP53631397A patent/JP4057062B2/ja not_active Expired - Lifetime
- 1997-04-02 PL PL97329194A patent/PL182745B1/pl unknown
- 1997-04-02 DE DE69719739T patent/DE69719739D1/de not_active Expired - Lifetime
- 1997-04-02 CN CN97194979A patent/CN1098559C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH02214400A (ja) * | 1989-02-15 | 1990-08-27 | Sony Corp | マイクロホン装置 |
US5450494A (en) * | 1992-08-05 | 1995-09-12 | Mitsubishi Denki Kabushiki Kaisha | Automatic volume controlling apparatus |
JPH06232662A (ja) * | 1993-02-04 | 1994-08-19 | Mitsubishi Electric Corp | 音量制御装置 |
Also Published As
Publication number | Publication date |
---|---|
US5790671A (en) | 1998-08-04 |
EP0891652A1 (en) | 1999-01-20 |
WO1997038488A1 (en) | 1997-10-16 |
JP2000508487A (ja) | 2000-07-04 |
BR9708516A (pt) | 1999-08-03 |
JP4057062B2 (ja) | 2008-03-05 |
HK1019669A1 (en) | 2000-02-18 |
AU709329B2 (en) | 1999-08-26 |
DE69719739D1 (de) | 2003-04-17 |
PL182745B1 (pl) | 2002-02-28 |
PL329194A1 (en) | 1999-03-15 |
EP0891652B1 (en) | 2003-03-12 |
MY113948A (en) | 2002-06-29 |
CN1220056A (zh) | 1999-06-16 |
KR20000005187A (ko) | 2000-01-25 |
CN1098559C (zh) | 2003-01-08 |
AU2605997A (en) | 1997-10-29 |
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