KR20080021814A - 피치 지연 윤곽부 조절을 사용하여 정보 신호를 코딩하기위한 방법 및 장치 - Google Patents
피치 지연 윤곽부 조절을 사용하여 정보 신호를 코딩하기위한 방법 및 장치 Download PDFInfo
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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
- G10L25/90—Pitch determination of speech signals
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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
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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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/06—Transformation of speech into a non-audible representation, e.g. speech visualisation or speech processing for tactile aids
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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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
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Abstract
Description
Claims (20)
- 스피치 인코더를 동작시키는 방법에 있어서,입력 신호를 바탕으로 피치 지연을 추정하는 단계;상기 피치 지연 추정을 바탕으로 피치 지연의 변화를 추정하는 단계;상기 피치 지연의 추정을 바탕으로 적응성 스텝 크기를 결정하는 단계; 및상기 적응성 스텝 크기를 바탕으로 인코딩된 피치 파라미터를 생성하는 단계를 포함하는, 스피치 인코더 동작 방법.
- 제 1 항에 있어서,상기 입력 신호를 바탕으로 상기 피치 지연을 추정하는 단계는 스피치 또는 오디오 신호를 바탕으로 상기 피치 지연을 추정하는 단계를 포함하는, 스피치 인코더 동작 방법.
- 제 1 항에 있어서,피치 지연 변화를 추정하는 단계는 피치 지연의 변화 및/또는 표준 편차를 추정하는 단계를 포함하는, 스피치 인코더 동작 방법.
- 제 4 항에 있어서,α(στ)=min(Aστ+B, αmax)이고 여기서 A 및 B는 미리 결정된 값들이고, στ는 τ의 표준 편차이고 αmax는 α(στ)의 최대 허용 가능한 값인, 스피치 인코더 동작 방법.
- 제 6 항에 있어서,상기 지연 조절 값 Δadj은 d'(m',j)=d(m',j)+Δadj(i)에 따라 피치 지연 보간 곡선의 종료점들을 상향 또는 하향으로 시프트하기 위하여 사용되고, d(m',j)는 서브프레임 지연 보간 종료점 매트릭스인, 스피치 인코더 동작 방법.
- 제 1 항에 있어서,상기 적응성 스텝 크기를 바탕으로 하는 인코딩된 피치 파라미터를 생성하는 단계는 왜곡 기준을 평가하는 단계를 포함하는, 스피치 인코더 동작 방법.
- 제 8 항에 있어서,왜곡 기준을 평가하는 단계는 평균 제곱 에러 파라미터의 최소치, 누적된 시프트 파라미터의 최소치, 및 표준화된 교차 상관 파라미터의 최대치 중 하나를 평가하는 단계를 포함하는, 스피치 인코더 동작 방법.
- 스피치 디코더의 동작 방법에 있어서,제 1 피치 지연 파라미터를 수신하는 단계;상기 제 1 피치 지연 파라미터를 바탕으로 피치 지연 변화를 추정하는 단계;상기 피치 지연의 변화를 바탕으로 적응성 스텝 크기를 결정하는 단계; 및상기 적응성 스텝 크기를 바탕으로 제 2 피치 지연 파라미터를 생성하는 단계를 포함하는, 스피치 디코더 동작 방법.
- 제 10 항에 있어서,상기 피치 지연 변화를 추정하는 단계는 피치 지연의 변화 및/또는 표준 편차를 추정하는 단계를 포함하는, 스피치 디코더 동작 방법.
- 제 12 항에 있어서,α(στ)=min(Aστ+B, αmax)이고 여기서 A 및 B는 미리 결정되고, στ는 τ의 표준 편차이고 αmax는 α(στ)의 최대 허용 가능 값인, 스피치 디코더 동작 방법.
- 제 14 항에 있어서,상기 지연 조절 값 Δadj은 식 d'(m',j)=d(m',j)+Δadj(i)에 따라 피치 지연 보간 곡선의 종료점들을 상향 또는 하향으로 시프트하기 위하여 사용되고, d(m',j)는 서브프레임 지연 보간 종료점 매트릭스이고, d'(m',j)는 제 2 피치 지연 파라미터인, 스피치 디코더 동작 방법.
- 장치에 있어서,피치 지연 변화를 추정하는 가변성 추정기;상기 피치 지연 변화를 바탕으로 적응성 스텝 크기를 결정하는 계수 생성기; 및상기 적응성 스텝 크기를 바탕으로 피치 파라미터를 변경하는 변경 회로를 포함하는, 장치.
- 제 16 항에 있어서,상기 변경 회로는 상기 적응성 스텝 크기를 바탕으로 피치 지연 보간 곡선 종료점들을 상향 및 하향으로 변경시키는, 장치.
- 제 16 항에 있어서,상기 피치 지연은 스피치 또는 오디오 신호를 바탕으로 하는, 장치.
- 제 16 항에 있어서,상기 피치 지연 변화는 피치 지연의 변화 및/또는 표준 변화를 포함하는, 장치.
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Application Number | Priority Date | Filing Date | Title |
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US11/190,680 | 2005-07-27 | ||
US11/190,680 US9058812B2 (en) | 2005-07-27 | 2005-07-27 | Method and system for coding an information signal using pitch delay contour adjustment |
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KR20080021814A true KR20080021814A (ko) | 2008-03-07 |
KR100979090B1 KR100979090B1 (ko) | 2010-08-31 |
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KR1020087002013A KR100979090B1 (ko) | 2005-07-27 | 2006-06-29 | 피치 지연 윤곽부 조절을 사용하여 정보 신호를 코딩하기위한 방법 및 장치 |
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US (1) | US9058812B2 (ko) |
EP (1) | EP1922718B1 (ko) |
JP (1) | JP4611424B2 (ko) |
KR (1) | KR100979090B1 (ko) |
CN (1) | CN101228573B (ko) |
AT (1) | ATE456846T1 (ko) |
DE (1) | DE602006012061D1 (ko) |
WO (1) | WO2007018815A2 (ko) |
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CN101228573B (zh) | 2011-08-10 |
WO2007018815A2 (en) | 2007-02-15 |
ATE456846T1 (de) | 2010-02-15 |
US9058812B2 (en) | 2015-06-16 |
US20070027680A1 (en) | 2007-02-01 |
JP4611424B2 (ja) | 2011-01-12 |
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