NO950490L - Kode-eksiterende, lineært forutsigbar (CELP) koder og dekoder - Google Patents
Kode-eksiterende, lineært forutsigbar (CELP) koder og dekoderInfo
- Publication number
- NO950490L NO950490L NO950490A NO950490A NO950490L NO 950490 L NO950490 L NO 950490L NO 950490 A NO950490 A NO 950490A NO 950490 A NO950490 A NO 950490A NO 950490 L NO950490 L NO 950490L
- Authority
- NO
- Norway
- Prior art keywords
- code
- codebook
- excitation codebook
- celp
- exiting
- Prior art date
Links
- 230000005284 excitation Effects 0.000 abstract 5
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 210000000056 organ Anatomy 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
Classifications
-
- 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
- G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
- G10L19/07—Line spectrum pair [LSP] vocoders
-
- 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
- G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
-
- 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
- G10L19/12—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 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
- G10L2019/0001—Codebooks
- G10L2019/0004—Design or structure of the codebook
- G10L2019/0005—Multi-stage vector quantisation
-
- 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
- G10L25/24—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 the cepstrum
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Det foreligger en kode-eksiterende, lineært forut- sigende (CELP) kode- eller dekodeanordning hvori en kodevektor som sendes med en kodebok som for eksempel en stokastisk kodebok (321) blir adaptivt omformet l overensstemmelse med en stemmeorgan-analyseinformasjon (LPC) slik at en høy kvalitet på talegjengivelse oppnås med en lav kodetakt. For å oppnå en lignende virkning finnes det dessuten en pulslignende eksiteringskodebok (322) dannet av isolert puls, l tillegg til den adaptive eksiteringskodebok (320) og den stokastlske eksiteringskodebok (321) slik at enten den stokastiske ekslterlngskodebok (321) eller den pulslignende eksiteringskodebok (322) valgvis kan benyttes for å frembringe en stemmeorganparameter som en parameter med et lineært spektrumpar.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SG1996004078A SG43128A1 (en) | 1993-06-10 | 1993-06-10 | Code excitation linear predictive (celp) encoder and decoder |
PCT/JP1993/000776 WO1994029965A1 (fr) | 1993-06-10 | 1993-06-10 | Codeur-decodeur predictif lineaire a excitation par codes |
Publications (2)
Publication Number | Publication Date |
---|---|
NO950490D0 NO950490D0 (no) | 1995-02-09 |
NO950490L true NO950490L (no) | 1995-03-29 |
Family
ID=26434408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO950490A NO950490L (no) | 1993-06-10 | 1995-02-09 | Kode-eksiterende, lineært forutsigbar (CELP) koder og dekoder |
Country Status (2)
Country | Link |
---|---|
NO (1) | NO950490L (no) |
WO (1) | WO1994029965A1 (no) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0333900A (ja) * | 1989-06-30 | 1991-02-14 | Fujitsu Ltd | 音声符号化方式 |
JP3010654B2 (ja) * | 1989-11-29 | 2000-02-21 | ソニー株式会社 | 圧縮符号化装置及び方法 |
JP2796408B2 (ja) * | 1990-06-18 | 1998-09-10 | シャープ株式会社 | 音声情報圧縮装置 |
JPH0451199A (ja) * | 1990-06-18 | 1992-02-19 | Fujitsu Ltd | 音声符号化・復号化方式 |
-
1993
- 1993-06-10 WO PCT/JP1993/000776 patent/WO1994029965A1/ja not_active Application Discontinuation
-
1995
- 1995-02-09 NO NO950490A patent/NO950490L/no unknown
Also Published As
Publication number | Publication date |
---|---|
WO1994029965A1 (fr) | 1994-12-22 |
NO950490D0 (no) | 1995-02-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Andersen et al. | iLBC-a linear predictive coder with robustness to packet losses | |
US8010351B2 (en) | Speech coding system to improve packet loss concealment | |
ES2309315T3 (es) | Metodo y dispositivo para la potenciacion del tono del habla descodificado. | |
DK0447495T3 (da) | Transformationskoder, dekoder og koder/dekoder for højkvalitets audio og med lav tidsforsinkelse | |
EP1085504A3 (en) | Vector quantization codebook generation method | |
CA2156000A1 (en) | Frame Erasure or Packet Loss Compensation Method | |
SE0201109D0 (sv) | Förfarande och anordning för vektorkvantisering | |
ES2159688T3 (es) | Metodo y aparato para reproducir señales de voz y metodo para transmitirlas. | |
EP1596368A3 (en) | Method and apparatus for speech decoding | |
KR970024628A (ko) | 음성부호화방법 및 장치와 음성복호화방법 및 장치 | |
CA2095883A1 (en) | Voice messaging codes | |
EP0785541A2 (en) | Usage of voice activity detection for efficient coding of speech | |
ATE520122T1 (de) | Sprachkodierung und sprachdekodierung | |
CA2574468A1 (en) | Noise suppression process and device | |
CA2044750A1 (en) | Speech coding and decoding system | |
EP0865027B1 (en) | Method for coding the random component vector in an ACELP coder | |
CA2021514A1 (en) | Constrained-stochastic-excitation coding | |
NO950490L (no) | Kode-eksiterende, lineært forutsigbar (CELP) koder og dekoder | |
CA2090205A1 (en) | Speech coding system | |
DE60030069D1 (de) | Verschleierungsverfahren bei Verlust von Sprachrahmen | |
CA2152513A1 (en) | Excitation Signal Encoding Method and Device Capable of Encoding with High Quality | |
Moriya et al. | Transform coding of speech with weighted vector quantization | |
GB2266822B (en) | Speech coding | |
EP1355298A3 (en) | Code Excitation linear prediction encoder and decoder | |
Sambur et al. | Speech encryption by manipulations of LPC parameters |