KR100653926B1 - 음성부호화 방법, 음성부호화 장치와 그를 포함하는 이동통신기기 및 그를 포함하는 셀 방식 전화네트워크 - Google Patents
음성부호화 방법, 음성부호화 장치와 그를 포함하는 이동통신기기 및 그를 포함하는 셀 방식 전화네트워크 Download PDFInfo
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- 238000005311 autocorrelation function Methods 0.000 claims abstract description 30
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- 238000005314 correlation function Methods 0.000 claims description 7
- 230000007774 longterm Effects 0.000 abstract description 7
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
- G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/15—Correlation function computation including computation of convolution operations
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- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L2019/0001—Codebooks
- G10L2019/0011—Long term prediction filters, i.e. pitch estimation
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/06—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being correlation coefficients
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Abstract
Description
Claims (14)
- 샘플된 신호를 이 신호의 일련의 프레임들의 각각을 위한 피치-래그매개변수를 사용하여 음성부호화하는 방법에 있어서, 각 프레임을 위해,프레임을 말로 표명된 및 말로 표명되지 않은 프레임으로 분류하는 단계신호내의 프레임을 위한 자기상관함수를 미리 정의된 최대 및 최소 지연들 사이에서 결정하는 단계;말로 표명된 프레임으로 분류된 수개의 이전 프레임들의 피치-래그들로부터 결정된 피치-래그매개변수 근처의 지연들을 위해 상기 자기상관함수를 강조하기 위해, 상기 이전 프레임들이 가장 최근의 프레임들인 경우에 상기 자기상관함수를 가중시키기 위해 사용되는 가중치와 비교하여 상기 이전 프레임들이 가장 최근의 프레임들이 아닌 경우에 사용되는 가중치를 감소시키면서 상기 자기상관함수를 가중시키는 단계; 및상기 가중된 자기상관함수의 최대에 대응하는 지연을 그 프레임을 위한 피치-래그매개변수로서 확인하는 단계를 포함하는 음성부호화 방법.
- 제 1항에 있어서, 상기 가중 단계에서,상기 자기상관함수는 개개의 이전 프레임들을 위해 결정된 복수개 피치래그들의 중간값 근처의 지연들을 위해 그 함수를 강조하도록 가중되는 음성부호화 방법.
- 제 4항에 있어서, 상기 가중함수는 상기 복수개 피치래그들의 표준편차에 역비례하는 인자의 산입에 의해 변경되는 음성부호화 방법.
- 제 1항 내지 제 5항 중 어느 한 항에 있어서, 상기 가중은 더 긴 지연시간들에 대하여 더 짧은 지연시간들을 추가로 강조하는 음성부호화 방법.
- 삭제
- 삭제
- 제 1항에 있어서, 상기 가중 단계에서,연속하는 말로 표명되지 않은 프레임들의 연속하는 시퀀스sequence)가 수신된 후에, 상기 가중치는 상기 시퀀스에서의 프레임들의 수에 실질적으로 비례하여 감소되는 음성부호화 방법.
- 샘플된 신호를 이 신호의 일련의 프레임들의 각각을 위한 피치-래그매개변수를 사용하여 음성부호화하는 장치에 있어서,프레임을 말로 표명된 및 말로 표명되지 않은 프레임으로 분류하는 수단;각 프레임을 위해, 신호 내 프레임의 자기상관함수를 기설정된 최대 및 최소 지연들 사이에서 결정하는 수단(17);말로 표명된 프레임으로 분류된 수개의 이전 프레임들의 피치-래그들로부터 결정된 피치-래그매개변수 근처의 지연들을 위해 상기 자기상관함수를 강조하기 위해, 상기 이전 프레임들이 가장 최근의 프레임들인 경우에 상기 자기상관함수를 가중시키기 위해 사용되는 가중치와 비교하여 상기 이전 프레임들이 가장 최근의 프레임들이 아닌 경우에 사용되는 가중치를 감소시키면서 상기 자기상관함수를 가중시키는 가중수단(19); 및상기 가중된 자기상관함수의 최대에 해당하는 지연을 그 프레임을 위한 피치-래그매개변수로서 확인하는 수단(22)을 포함하는 음성부호화 장치.
- 제 12항의 장치를 포함하는 이동통신기기.
- 제 12항에 따른 장치를 갖는 기지제어국을 포함하는 셀 방식 전화네트워크.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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FI971976 | 1997-05-07 | ||
FI971976A FI971976A (fi) | 1997-05-07 | 1997-05-07 | Puhekoodaus |
FI980502 | 1998-03-05 | ||
FI980502A FI113903B (fi) | 1997-05-07 | 1998-03-05 | Puheen koodaus |
PCT/FI1998/000229 WO1998050910A1 (en) | 1997-05-07 | 1998-03-13 | Speech coding |
Related Parent Applications (1)
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KR1019997009481A Division KR100653932B1 (ko) | 1997-05-07 | 1998-03-13 | 음성부호화 방법, 음성부호화 장치와 그를 포함하는 이동통신기기 및 그를 포함하는 셀 방식 전화네트워크 |
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KR20040037265A KR20040037265A (ko) | 2004-05-04 |
KR100653926B1 true KR100653926B1 (ko) | 2006-12-05 |
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KR1020047005340A KR100653926B1 (ko) | 1997-05-07 | 1998-03-13 | 음성부호화 방법, 음성부호화 장치와 그를 포함하는 이동통신기기 및 그를 포함하는 셀 방식 전화네트워크 |
KR1019997009481A KR100653932B1 (ko) | 1997-05-07 | 1998-03-13 | 음성부호화 방법, 음성부호화 장치와 그를 포함하는 이동통신기기 및 그를 포함하는 셀 방식 전화네트워크 |
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KR1019997009481A KR100653932B1 (ko) | 1997-05-07 | 1998-03-13 | 음성부호화 방법, 음성부호화 장치와 그를 포함하는 이동통신기기 및 그를 포함하는 셀 방식 전화네트워크 |
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US (1) | US6199035B1 (ko) |
EP (1) | EP0877355B1 (ko) |
JP (3) | JPH1124699A (ko) |
KR (2) | KR100653926B1 (ko) |
CN (1) | CN1120471C (ko) |
AU (1) | AU739238B2 (ko) |
DE (1) | DE69814517T2 (ko) |
ES (1) | ES2198615T3 (ko) |
FI (1) | FI113903B (ko) |
WO (1) | WO1998050910A1 (ko) |
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-
1998
- 1998-03-05 FI FI980502A patent/FI113903B/fi not_active IP Right Cessation
- 1998-03-13 KR KR1020047005340A patent/KR100653926B1/ko not_active IP Right Cessation
- 1998-03-13 WO PCT/FI1998/000229 patent/WO1998050910A1/en not_active Application Discontinuation
- 1998-03-13 AU AU64032/98A patent/AU739238B2/en not_active Expired
- 1998-03-13 KR KR1019997009481A patent/KR100653932B1/ko not_active IP Right Cessation
- 1998-03-13 CN CN98804901A patent/CN1120471C/zh not_active Expired - Lifetime
- 1998-03-17 EP EP98104785A patent/EP0877355B1/en not_active Expired - Lifetime
- 1998-03-17 DE DE69814517T patent/DE69814517T2/de not_active Expired - Lifetime
- 1998-03-17 ES ES98104785T patent/ES2198615T3/es not_active Expired - Lifetime
- 1998-04-23 JP JP10113808A patent/JPH1124699A/ja not_active Withdrawn
- 1998-05-06 US US09/073,697 patent/US6199035B1/en not_active Expired - Lifetime
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2003
- 2003-10-09 JP JP2003350824A patent/JP2004038211A/ja active Pending
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Also Published As
Publication number | Publication date |
---|---|
FI980502A (fi) | 1998-11-08 |
FI980502A0 (fi) | 1998-03-05 |
ES2198615T3 (es) | 2004-02-01 |
KR100653932B1 (ko) | 2006-12-04 |
KR20010006394A (ko) | 2001-01-26 |
AU739238B2 (en) | 2001-10-04 |
US6199035B1 (en) | 2001-03-06 |
FI113903B (fi) | 2004-06-30 |
JP2004038211A (ja) | 2004-02-05 |
JP4866438B2 (ja) | 2012-02-01 |
DE69814517D1 (de) | 2003-06-18 |
EP0877355A2 (en) | 1998-11-11 |
AU6403298A (en) | 1998-11-27 |
CN1120471C (zh) | 2003-09-03 |
CN1255226A (zh) | 2000-05-31 |
JP2009223326A (ja) | 2009-10-01 |
WO1998050910A1 (en) | 1998-11-12 |
JPH1124699A (ja) | 1999-01-29 |
EP0877355A3 (en) | 1999-06-16 |
DE69814517T2 (de) | 2004-04-08 |
KR20040037265A (ko) | 2004-05-04 |
EP0877355B1 (en) | 2003-05-14 |
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