KR100306814B1 - Celp 음성 부호화 또는 복호화 장치 및 방법 - Google Patents
Celp 음성 부호화 또는 복호화 장치 및 방법 Download PDFInfo
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- KR100306814B1 KR100306814B1 KR1020017001038A KR20017001038A KR100306814B1 KR 100306814 B1 KR100306814 B1 KR 100306814B1 KR 1020017001038 A KR1020017001038 A KR 1020017001038A KR 20017001038 A KR20017001038 A KR 20017001038A KR 100306814 B1 KR100306814 B1 KR 100306814B1
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
- G10L19/135—Vector sum excited linear prediction [VSELP]
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L2019/0001—Codebooks
- G10L2019/0007—Codebook element generation
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L2019/0001—Codebooks
- G10L2019/0013—Codebook search algorithms
Abstract
Description
Claims (8)
- CELP 음성 부호화 장치 또는 복호화 장치에 있어서,적응 부호 벡터를 생성하는 적응 부호 리스트(14)와,잡음 부호 벡터를 생성하는 잡음 부호 리스트(15)와,상기 잡음 부호 벡터와 상기 적응 부호 벡터를 합성하여 LPC 합성을 수행하는 합성 필터(13)를 포함하되,상기 잡음 부호 리스트는 고정 파형 저장 수단(181)에 저장되어 있는 적어도 하나의 고정 파형(V1, V2, V3)을, 입력 임펄스 벡터의 위치(P1, P2, P3) 및 극성에 따라 배치하는 고정 파형 배치 수단(182)을 포함하는 음원 벡터 생성 장치에 의해 형성되는CELP 음성 부호화 장치 또는 복호화 장치.
- 제 1 항에 있어서,상기 고정 파형 배치 수단은 상기 입력 임펄스 벡터의 상기 펄스의 위치 및 극성에 따라, 상기 고정 파형 저장 수단으로부터 판독된 상기 고정 파형을 시프트시키는CELP 음성 부호화 장치 또는 복호화 장치.
- 제 1 항에 있어서,상기 고정 파형 배치 수단은 상기 고정 파형 저장 수단으로부터 판독된 상기 고정 파형을 상기 입력 임펄스 벡터로 콘볼루션시키는CELP 음성 부호화 장치 또는 복호화 장치.
- 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,상기 입력 임펄스 벡터는 대수적 부호 리스트로부터 제공되는 벡터인CELP 음성 부호화 장치 또는 복호화 장치.
- CELP 음성 부호화 방법 또는 복호화 방법에 있어서,적응 부호 리스트로부터 적응 부호 벡터를 생성하는 단계와,입력 임펄스 벡터의 위치 및 극성에 따라, 적어도 하나의 고정 파형을 배치함으로써 잡음 부호 벡터를 생성하는 단계와,상기 잡음 부호 벡터와 상기 적응 부호 벡터를 합성하여 LPC 합성을 수행하는 단계를 포함하는CELP 음성 부호화 방법 또는 복호화 방법.
- 제 5 항에 있어서,상기 배치 단계는, 입력 임펄스 벡터의 위치 및 극성에 따라, 적어도 하나의 고정 파형을 시프트시키는CELP 음성 부호화 방법 또는 복호화 방법.
- 제 5 항에 있어서,상기 배치 단계는 적어도 하나의 고정 파형을 입력 임펄스 벡터로 콘볼루션시키는CELP 음성 부호화 방법 또는 복호화 방법.
- 제 5 항 내지 제 7 항 중 어느 한 항에 있어서,상기 입력 임펄스 벡터는 대수적 부호 리스트로부터 제공되는 벡터인CELP 음성 부호화 방법 또는 복호화 방법.
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP96-294738 | 1996-11-07 | ||
JP29473896A JP4003240B2 (ja) | 1996-11-07 | 1996-11-07 | 音声符号化装置及び音声復号化装置 |
JP31032496A JP4006770B2 (ja) | 1996-11-21 | 1996-11-21 | ノイズ推定装置、ノイズ削減装置、ノイズ推定方法、及びノイズ削減方法 |
JP96-310324 | 1996-11-21 | ||
JP97-034582 | 1997-02-19 | ||
JP03458397A JP3700310B2 (ja) | 1997-02-19 | 1997-02-19 | ベクトル量子化装置及びベクトル量子化方法 |
JP97-034583 | 1997-02-19 | ||
JP03458297A JP3174742B2 (ja) | 1997-02-19 | 1997-02-19 | Celp型音声復号化装置及びcelp型音声復号化方法 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019980705215A Division KR100306817B1 (ko) | 1996-11-07 | 1997-11-06 | 음원벡터생성장치및음원벡터생성방법 |
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KR100306814B1 true KR100306814B1 (ko) | 2001-11-09 |
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Family Applications (9)
Application Number | Title | Priority Date | Filing Date |
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KR1020017001044A KR100326777B1 (ko) | 1996-11-07 | 1997-11-06 | 음원 코덱용 생성 장치 및 음원 벡터 생성 방법 |
KR1019980705215A KR100306817B1 (ko) | 1996-11-07 | 1997-11-06 | 음원벡터생성장치및음원벡터생성방법 |
KR10-2003-7012052A KR20040000406A (ko) | 1996-11-07 | 1997-11-06 | 변형 벡터 생성 장치 |
KR1020017001046A KR100339168B1 (ko) | 1996-11-07 | 1997-11-06 | 음원 벡터 생성 장치, 음성 부호화 장치 및 음성 복호화장치 |
KR1020017010774A KR20030096444A (ko) | 1996-11-07 | 1997-11-06 | 음원 벡터 생성 장치 및 방법 |
KR1020017001045A KR100304391B1 (ko) | 1996-11-07 | 2001-01-22 | 음원 벡터 생성 장치 및 방법 |
KR1020017001038A KR100306814B1 (ko) | 1996-11-07 | 2001-01-22 | Celp 음성 부호화 또는 복호화 장치 및 방법 |
KR1020017001039A KR100306815B1 (ko) | 1996-11-07 | 2001-01-22 | Celp 음성 부호화 또는 복호화 장치 및 방법 |
KR1020017001040A KR100306816B1 (ko) | 1996-11-07 | 2001-01-22 | Celp 음성 부호화 또는 복호화 장치 및 방법 |
Family Applications Before (6)
Application Number | Title | Priority Date | Filing Date |
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KR1020017001044A KR100326777B1 (ko) | 1996-11-07 | 1997-11-06 | 음원 코덱용 생성 장치 및 음원 벡터 생성 방법 |
KR1019980705215A KR100306817B1 (ko) | 1996-11-07 | 1997-11-06 | 음원벡터생성장치및음원벡터생성방법 |
KR10-2003-7012052A KR20040000406A (ko) | 1996-11-07 | 1997-11-06 | 변형 벡터 생성 장치 |
KR1020017001046A KR100339168B1 (ko) | 1996-11-07 | 1997-11-06 | 음원 벡터 생성 장치, 음성 부호화 장치 및 음성 복호화장치 |
KR1020017010774A KR20030096444A (ko) | 1996-11-07 | 1997-11-06 | 음원 벡터 생성 장치 및 방법 |
KR1020017001045A KR100304391B1 (ko) | 1996-11-07 | 2001-01-22 | 음원 벡터 생성 장치 및 방법 |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
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KR1020017001039A KR100306815B1 (ko) | 1996-11-07 | 2001-01-22 | Celp 음성 부호화 또는 복호화 장치 및 방법 |
KR1020017001040A KR100306816B1 (ko) | 1996-11-07 | 2001-01-22 | Celp 음성 부호화 또는 복호화 장치 및 방법 |
Country Status (9)
Country | Link |
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US (20) | US6453288B1 (ko) |
EP (16) | EP1071078B1 (ko) |
KR (9) | KR100326777B1 (ko) |
CN (11) | CN1167047C (ko) |
AU (1) | AU4884297A (ko) |
CA (1) | CA2242345C (ko) |
DE (17) | DE69721595T2 (ko) |
HK (2) | HK1017472A1 (ko) |
WO (1) | WO1998020483A1 (ko) |
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