KR960706738A - 음성 향상 시스템과 그 방법(Voice enhancement system and method) - Google Patents
음성 향상 시스템과 그 방법(Voice enhancement system and method) Download PDFInfo
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- KR960706738A KR960706738A KR1019960702879A KR19960702879A KR960706738A KR 960706738 A KR960706738 A KR 960706738A KR 1019960702879 A KR1019960702879 A KR 1019960702879A KR 19960702879 A KR19960702879 A KR 19960702879A KR 960706738 A KR960706738 A KR 960706738A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/16—Automatic control
- H03G5/18—Automatic control in untuned amplifiers
- H03G5/22—Automatic control in untuned amplifiers having semiconductor devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/002—Applications of echo suppressors or cancellers in telephonic connections
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interface Circuits In Exchanges (AREA)
- Telephonic Communication Services (AREA)
- Vehicle Body Suspensions (AREA)
- Stereo-Broadcasting Methods (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
Description
Claims (42)
- 원거리 통신망에서 음성개선을 제공하는 방법에 있어서, 입력음성신호의 평균 전력을 결정하는 단계와; 입력음성신호의 평균 전력에 응답하여 스케일링 인자를 결정하는 단계와, 입력음성신호의 기존의 부분을 감쇄시킴으로써 입력음성신호를 등화시키는 단계와, 스케일링 인자를 가지고 등화된 입력음성신호를 스케일링하는 단계와, 스케일링 음성신호를 출력에 연결하는 단계로 구성되어 있는 방법.
- 제1항에 있어서, 입력신호내의 음성밴드 데이타를 검출하는 단계와, 출력으로부터 스케일된 음성신호를 디커플링하는 단계로 구성되어 있는 방법.
- 제1항에 있어서, 망내의 탄뎀 개선을 검출하는 단계와, 출력으로부터 스케일된 음성신호를 디커플링하는 단계로 구성되어 있는 방법.
- 제1항에 있어서, 망내의 탄뎀 개선과 입력신호내의 음성 밴드 데이타중 최소한 한개를 검출하는 단계와, 출력으로부터 스케일된 음성신호를 디커플링하는 단계로 구성되어 있는 방법.
- 제1항에 있어서, 상기 평균 전력을 결정하는 것과, 스케일링 인자를 결정하는 것, 등화, 스케일링 및 커플링 단계들은 원거리 통신망의 에코 제어기내에서 수행되어지는 방법.
- 제1항에 있어서, 입력 음성신호의 기존 부분이 300㎐이상이 되는 방법.
- 제1항에 있어서, 입력음성신호의 기존 부분이 400㎐이상이 되는 방법.
- 제1항에 있어서, 상기 입력신호를 스케일링하는 단계는 정해진 시간동안 등화된 입력신호를 스케일링하기 위한 이미 결정된 스케일링 인자를 사용하는 것을 추가로 포함하는 방법.
- 제1항에 있어서, 입력음성신호를 정해진 시간 구간을 나타내는 다수의 프레임들로 나누는 단계와, 소정의 프레임 수들을 위해 등화된 입력신호를 스케일링 인자로 스케일링하는 단계를 추가로 포함하고 있는 방법.
- 제1항에 있어서, 상기 스케일링 인자를 결정하는 단계는 연속된 스케일링 인자 사이의 변화량을 제한하는 것을 추가로 포함하고 있는 방법.
- 제1항에 있어서, 상기 등화 과정은 기존의 주파수 위에 있는 입력신호의 전력이 감쇄되도록 입력신호를 필터링하는 것을 추가로 포함하고 있는 방법.
- 제1항에 있어서, 상기 평균 전력을 결정하는 단계는 정류화된 입력음성신호를 저대역 필터링하는 것을 추가로 포함하고 있는 방법.
- 제1항에 있어서, 기존의 주파수보다 낮거나 높은 입력신호의 전력을 측정하는 단계와, 상기 전력 측정치와 기존의 스케일된 신호에 대한 전력 측정치를 비교하는 단계와, 상기 비교 단계에 응답하여 출력으로부터 스케일된 음성신호를 디커플링하는 단계를 추가로 포함하고 있는 방법.
- 제1항에 있어서, 입력음성신호를 시간 구간을 나타내는 다수의 프레임들로 나누는 단계와, 기존의 프레임 수가 모두 사용되었을 때, 상기 평균 전력을 결정하는 것과 스케일링 인자를 결정하는 것, 등화, 스케일링 및 커플링 단계들을 계속적으로 수행하는 단계를 추가로 포함하고 있는 방법.
- 제1항에 있어서, 입력에서 입력음성신호내의 침묵 구간(periods of silence)들을 검출하는 단계와, 출력으로부터 스케일된 음성 신호를 디커플링하는 단계를 추가로 포함하고 있는 방법.
- 제15항에 있어서, 검출된 침묵 구간들의 잡음 레벨이 최소화되도록 입력음성신호를 감쇄시키는 단계를 추가로 포함하고 있는 방법.
- 원거리 통신망내에 음성 개선을 제공하는 방법에 있어서, 입력음성신호의 평균 전력을 결정하는 단계와, 입력음성신호의 평균 전력에 응답하여 스케일링 인자를 결정하는 단계와, 입력음성신호 중 기존의 부분을 감쇄시킴으로써 입력음성신호를 등화시키는 단계와, 등화된 입력음성신호를 스케일링 인자로 스케일링하는 단계와, 상기 스케일된 음성신호를 출력에 커플링하는 단계와, 망내의 탐덴 개선과 입력신호내의 음성밴드 데이타 중 최소한 한개를 검출하는 단계와, 출력으로부터 스케일된 음성신호를 디커플링하는 단계로 구성되어 있는 방법.
- 제17항에 있어서, 상기 평균 전력을 결정하고, 스케일링 인자를 결정하는 것과 등화, 스케일링 및 커플링 단계들은 원거리 통신망의 에코 제거기 내에서 수행이되는 방법.
- 제17항에 있어서, 입력음성신호의 기존의 부분은 300㎐ 이상이 되는 방법.
- 제17항에 있어서, 입력음성신호를 시간 구간을 나타내는 다수의 프레임들로 나누는 단계와, 소정의 프레임 수들을 위해 등화된 입력신호를 스케일링 인자로 스케일링하는 단계를 추가로 포함하고 있는 방법.
- 제17항에 있어서, 입력음성신호를 시간 구간을 나타내는 다수의 프레임들로 나누는 단계와, 소정의 프레임 수들이 모두 사용되었을 때 상기 평균 전력을 결정하는 일과, 스케일링 인자를 결정하는 일과등화, 스케일링과 커플링 단계들을 계속해서 수행하는 단계를 추가로 포함하고 있는 방법.
- 제17항에 있어서, 입력에서 입력음성신호내의 침북 구간들을 검출하는 단계와, 출력으로부터 스케일된 음성신호를 디커플링하는 단계를 추가로 포함하고 있는 방법.
- 제22항에 있어서, 검출된 침묵 구간의 레벨이 최소화되도록 입력음성신호를 감쇄시키는 단계를 추가로 포함하는 방법.
- 원거리 통신망에서 음성신호에 대한개선을 제공하는 시스템에 있어서, 음성신호의 평균 전력을 결정하는 전력 평균기와, 음성신호의 기존 부분을 감쇄시키는 등화기와, 결정된 평균 전력에 응답하여 등화된 음성신호를 스케일링 인자로 스케일링하는 출력 스케일러(scaler)로 구성되어 있는 시스템.
- 제24항에 있어서, 음성신호내의 음성 밴드 데이타를 검출하고, 상기 출력 스케일러가 음성신호를 스케일링하는 것을 막아주는 음성 밴드 데이타 검출기를 추가로 포함하고 있는 시스템.
- 제24항에 있어서, 음성신호가 언제 스케일이 되었는지를 검출하고 상기 출력 스케일러가 음성신호를 스케일링하는 것을 방지하는 탄뎀 음성 개선 검출기를 추가로 포함하고 있는 방법.
- 제24항에 있어서, 음성신호내의 음성 밴드 데이타를 검출하는 음성 밴드 데이타 검출기와, 상기 음성신호가 언제 스케일이 되었는지를 검출하는 탄뎀 음성 개선 검출기를 추가로 포함하고 있으며, 상기 음성밴드 데이타 검출기의 최소한 한개와 상기 탄뎀 음성 개선 검출기는 상기 출력 스케일러가 음성신호를 스케일링하는 것을 막기 위해 동작하고 있는 시스템.
- 제24항에 있어서, 상기 전력 평균기, 등화기와 출력 스케일러는 원거리 통신망의 에코 제거기내에 위치하고 있는 시스템.
- 제24항에 있어서, 상기 등화기에 의해 감쇄된 음성신호의 기존 부분을 300㎐가 넘는 시스템.
- 제24항에 있어서, 상기 등화기에 의해 감쇄된 음성신호의 기존 부분을 400㎐가 넘는 시스템.
- 제24항에 있어서, 상기 출력 스케일러는 소정의 시간동안 이미 결정된 스케일링 인자를 가지고 등화된 음성신호들을 스케일링하는 시스템.
- 제24항에 있어서, 상기 출력 스케일러가 추가적으로 음성 신호를 시간 구간을 나타내는 다수의 프레임들로 나누고, 소정의 프레임 수들에 대해서 음성신호를 스케일하는 시스템.
- 제24항에 있어서, 상기 출력 스케일러가 추가적으로 연속된 스케일링 인자들 사이에서의 변화량을 제한하기 위해 동작하는 시스템.
- 제24항에 있어서, 상기 등화기는 소정의 주파수 이상의 음성신호를 필터하는 디지탈 필터로 구성된 시스템.
- 제24항에 있어서, 상기 출력 평균기는 저대역 필터로 구성된 시스템.
- 제24항에 있어서, 음성신호를 스케일링하는데 있어서, 상기 출력 스케일러에 의해 사용된 스케일링 인자를 제공하는 이득/감쇄 검색 테이블을 추가로 포함하고 있는 시스템.
- 제24항에 있어서, 음성신호를 스케일링하는데 있어서, 상기 출력 스케일러에 의해 사용된 스케일링 인자를 제공하는 이득/감쇄 검색 테이블을 추가로 포함하고 있으며, 상기 이득/감쇄 검색 테이블은 저전력 음성신호들이 고전력 음성신호들에 비해 큰 스케일링 인자들이 할당되도록 만들어져 있으며, 고전력 음성신호들은 낮거나(-)의 스케일링 인자 인자가 할당되어지는 시스템.
- 제24항에 있어서, 입력음성신호가 스케일링을 피하도록 입력음성신호를 직접 출력에 제공하는 투명한 길과, 음성신호들이 부족한 낮은 레벨의 입력신호들을 가변적으로 감쇄시키기 위해 상기 투명한 길내에 결합되어 있는 감쇄기를 추가로 포함하고 있는 시스템.
- 원거리 통신망에서 음성신호에 대한개선을 제공하고 시스템에 있어서, 음성신호를 받아들이는 입력과, 음성신호를 수신하는 출력과, 음성 개선기를 포함하고 있는 상기 입력과 출력 사이의 커플링으로 구성되어 있으며, 상기 음성 개선기는, 음성 신호의 평균 전력을 결정하는 전력 평균기와, 음성 신호의 기존부분을 감쇄시키는 등화기와, 소정의 평균 전력에 응답하여 등화된 음성신호를 스케일링 인자로 스케일링하고, 그 스케일된 신호를 상기 출력에 공급하기 위해 상기 출력에 연결된 출력 스케일러로 구성되어 있는 시스템.
- 제39항에 있어서, 음성 신호내의 음성 밴드 데이타를 검출하고, 상기 출력으로부터 상기 출력 스케일러를 디커플링하는 음성 밴드 데이타 검출기를 추가로 포함하고 있는 시스템.
- 제39항에 있어서, 음성신호가 언제 스케일이 되었는지를 알아내고, 상기 출력 스케일링 회로를 상기 출력으로부터 디커플링하기 위한 탄뎀 음성 개선 검출기를 추가로 포함하고 있는 방법.
- 제39항에 있어서, 음성신호내의 음성 밴드 데이타를 검출하는 음성 밴드 데이타 검출기와, 음성 신호가 언제 스케일이 되었는지를 검출하는 탄뎀 음성 개선 검출기를 추가로 포함하고 있으며, 상기 음성밴드 데이타 검출기와 상기 탄뎀 음성 개선 검출기 중 최소한 한개는 상기 출력 스케일러를 상기 출력으로부터 디커플시키도록 동작하는 시스템.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US161,120 | 1993-12-02 | ||
US08/161,120 US5471527A (en) | 1993-12-02 | 1993-12-02 | Voice enhancement system and method |
US161120 | 1993-12-02 | ||
PCT/US1994/013603 WO1995015643A1 (en) | 1993-12-02 | 1994-11-28 | Voice enhancement system and method |
Publications (2)
Publication Number | Publication Date |
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KR960706738A true KR960706738A (ko) | 1996-12-09 |
KR100268319B1 KR100268319B1 (ko) | 2000-10-16 |
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KR1019960702879A Expired - Fee Related KR100268319B1 (ko) | 1993-12-02 | 1994-11-28 | 음성 개선 시스템과 그 방법 |
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EP (1) | EP0732024A1 (ko) |
JP (1) | JP3032811B2 (ko) |
KR (1) | KR100268319B1 (ko) |
CN (1) | CN1149373A (ko) |
AU (2) | AU690603B2 (ko) |
BR (1) | BR9408202A (ko) |
CA (1) | CA2177266C (ko) |
FI (1) | FI962305A0 (ko) |
PL (1) | PL175383B1 (ko) |
RU (1) | RU2142675C1 (ko) |
TW (1) | TW321763B (ko) |
WO (1) | WO1995015643A1 (ko) |
ZA (1) | ZA949489B (ko) |
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-
1993
- 1993-12-02 US US08/161,120 patent/US5471527A/en not_active Expired - Lifetime
-
1994
- 1994-11-28 CN CN94194948A patent/CN1149373A/zh active Pending
- 1994-11-28 BR BR9408202A patent/BR9408202A/pt not_active Application Discontinuation
- 1994-11-28 RU RU96114996A patent/RU2142675C1/ru active
- 1994-11-28 KR KR1019960702879A patent/KR100268319B1/ko not_active Expired - Fee Related
- 1994-11-28 EP EP95901975A patent/EP0732024A1/en not_active Withdrawn
- 1994-11-28 AU AU11018/95A patent/AU690603B2/en not_active Ceased
- 1994-11-28 CA CA002177266A patent/CA2177266C/en not_active Expired - Fee Related
- 1994-11-28 PL PL94314880A patent/PL175383B1/pl unknown
- 1994-11-28 JP JP7515686A patent/JP3032811B2/ja not_active Expired - Fee Related
- 1994-11-28 WO PCT/US1994/013603 patent/WO1995015643A1/en not_active Application Discontinuation
- 1994-11-29 ZA ZA949489A patent/ZA949489B/xx unknown
- 1994-12-08 TW TW083111446A patent/TW321763B/zh active
-
1995
- 1995-06-07 US US08/484,677 patent/US5592545A/en not_active Expired - Fee Related
-
1996
- 1996-05-31 FI FI962305A patent/FI962305A0/fi not_active Application Discontinuation
-
1998
- 1998-05-08 AU AU64822/98A patent/AU6482298A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO1995015643A1 (en) | 1995-06-08 |
ZA949489B (en) | 1995-08-14 |
US5592545A (en) | 1997-01-07 |
TW321763B (ko) | 1997-12-01 |
AU690603B2 (en) | 1998-04-30 |
FI962305A7 (fi) | 1996-05-31 |
JPH09506220A (ja) | 1997-06-17 |
CA2177266A1 (en) | 1995-06-08 |
CA2177266C (en) | 2000-02-01 |
RU2142675C1 (ru) | 1999-12-10 |
FI962305A0 (fi) | 1996-05-31 |
US5471527A (en) | 1995-11-28 |
CN1149373A (zh) | 1997-05-07 |
EP0732024A1 (en) | 1996-09-18 |
PL175383B1 (pl) | 1998-12-31 |
KR100268319B1 (ko) | 2000-10-16 |
AU6482298A (en) | 1998-07-02 |
PL314880A1 (en) | 1996-09-30 |
JP3032811B2 (ja) | 2000-04-17 |
AU1101895A (en) | 1995-06-19 |
BR9408202A (pt) | 1997-08-26 |
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