DE68922134D1 - Überträgungssystem für codierte Sprache mit Codebüchern zur Synthetisierung von Komponenten mit niedriger Amplitude. - Google Patents
Überträgungssystem für codierte Sprache mit Codebüchern zur Synthetisierung von Komponenten mit niedriger Amplitude.Info
- Publication number
- DE68922134D1 DE68922134D1 DE68922134T DE68922134T DE68922134D1 DE 68922134 D1 DE68922134 D1 DE 68922134D1 DE 68922134 T DE68922134 T DE 68922134T DE 68922134 T DE68922134 T DE 68922134T DE 68922134 D1 DE68922134 D1 DE 68922134D1
- Authority
- DE
- Germany
- Prior art keywords
- excitation pulses
- speech samples
- replica
- auxiliary excitation
- signal indicating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 title 1
- 230000002194 synthesizing effect Effects 0.000 title 1
- 230000005284 excitation Effects 0.000 abstract 8
- 230000003595 spectral effect Effects 0.000 abstract 2
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
-
- 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
-
- 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
- G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
-
- 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
- G10L2019/0001—Codebooks
- G10L2019/0003—Backward prediction of gain
-
- 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
- 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
-
- 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
-
- 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
- G10L25/93—Discriminating between voiced and unvoiced parts of speech signals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Analogue/Digital Conversion (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63123148A JP3063087B2 (ja) | 1988-05-20 | 1988-05-20 | 音声符号化復号化装置及び音声符号化装置ならびに音声復号化装置 |
JP63123840A JPH01293400A (ja) | 1988-05-23 | 1988-05-23 | 音声符号化復号化方法並びに音声符号化装置及び音声復号化装置 |
JP63245077A JPH0291698A (ja) | 1988-09-28 | 1988-09-28 | 音声符号化復号化方式 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68922134D1 true DE68922134D1 (de) | 1995-05-18 |
DE68922134T2 DE68922134T2 (de) | 1995-11-30 |
Family
ID=27314638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68922134T Expired - Fee Related DE68922134T2 (de) | 1988-05-20 | 1989-05-19 | Überträgungssystem für codierte Sprache mit Codebüchern zur Synthetisierung von Komponenten mit niedriger Amplitude. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4975958A (de) |
EP (1) | EP0342687B1 (de) |
CA (1) | CA1321646C (de) |
DE (1) | DE68922134T2 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5263119A (en) * | 1989-06-29 | 1993-11-16 | Fujitsu Limited | Gain-shape vector quantization method and apparatus |
JPH0332228A (ja) * | 1989-06-29 | 1991-02-12 | Fujitsu Ltd | ゲイン―シェイプ・ベクトル量子化方式 |
US5054075A (en) * | 1989-09-05 | 1991-10-01 | Motorola, Inc. | Subband decoding method and apparatus |
EP0443548B1 (de) * | 1990-02-22 | 2003-07-23 | Nec Corporation | Sprachcodierer |
US5701392A (en) * | 1990-02-23 | 1997-12-23 | Universite De Sherbrooke | Depth-first algebraic-codebook search for fast coding of speech |
US5754976A (en) * | 1990-02-23 | 1998-05-19 | Universite De Sherbrooke | Algebraic codebook with signal-selected pulse amplitude/position combinations for fast coding of speech |
JP3102015B2 (ja) * | 1990-05-28 | 2000-10-23 | 日本電気株式会社 | 音声復号化方法 |
CA2051304C (en) * | 1990-09-18 | 1996-03-05 | Tomohiko Taniguchi | Speech coding and decoding system |
JP3248215B2 (ja) * | 1992-02-24 | 2002-01-21 | 日本電気株式会社 | 音声符号化装置 |
US5513297A (en) * | 1992-07-10 | 1996-04-30 | At&T Corp. | Selective application of speech coding techniques to input signal segments |
DE4320990B4 (de) * | 1993-06-05 | 2004-04-29 | Robert Bosch Gmbh | Verfahren zur Redundanzreduktion |
JP2655046B2 (ja) * | 1993-09-13 | 1997-09-17 | 日本電気株式会社 | ベクトル量子化装置 |
AU7960994A (en) * | 1993-10-08 | 1995-05-04 | Comsat Corporation | Improved low bit rate vocoders and methods of operation therefor |
JP3328080B2 (ja) * | 1994-11-22 | 2002-09-24 | 沖電気工業株式会社 | コード励振線形予測復号器 |
DE69737012T2 (de) * | 1996-08-02 | 2007-06-06 | Matsushita Electric Industrial Co., Ltd., Kadoma | Sprachkodierer, sprachdekodierer und aufzeichnungsmedium dafür |
US6516299B1 (en) | 1996-12-20 | 2003-02-04 | Qwest Communication International, Inc. | Method, system and product for modifying the dynamic range of encoded audio signals |
US6782365B1 (en) | 1996-12-20 | 2004-08-24 | Qwest Communications International Inc. | Graphic interface system and product for editing encoded audio data |
US6463405B1 (en) | 1996-12-20 | 2002-10-08 | Eliot M. Case | Audiophile encoding of digital audio data using 2-bit polarity/magnitude indicator and 8-bit scale factor for each subband |
US5864820A (en) * | 1996-12-20 | 1999-01-26 | U S West, Inc. | Method, system and product for mixing of encoded audio signals |
US5864813A (en) * | 1996-12-20 | 1999-01-26 | U S West, Inc. | Method, system and product for harmonic enhancement of encoded audio signals |
US5845251A (en) * | 1996-12-20 | 1998-12-01 | U S West, Inc. | Method, system and product for modifying the bandwidth of subband encoded audio data |
CN101099199A (zh) * | 2004-06-22 | 2008-01-02 | 皇家飞利浦电子股份有限公司 | 音频编码和解码 |
US8385433B2 (en) | 2005-10-27 | 2013-02-26 | Qualcomm Incorporated | Linear precoding for spatially correlated channels |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1195350B (it) * | 1986-10-21 | 1988-10-12 | Cselt Centro Studi Lab Telecom | Procedimento e dispositivo per la codifica e decodifica del segnale vocale mediante estrazione di para metri e tecniche di quantizzazione vettoriale |
US4910781A (en) * | 1987-06-26 | 1990-03-20 | At&T Bell Laboratories | Code excited linear predictive vocoder using virtual searching |
-
1989
- 1989-05-19 CA CA000600286A patent/CA1321646C/en not_active Expired - Fee Related
- 1989-05-19 DE DE68922134T patent/DE68922134T2/de not_active Expired - Fee Related
- 1989-05-19 EP EP89109022A patent/EP0342687B1/de not_active Expired - Lifetime
- 1989-05-22 US US07/354,662 patent/US4975958A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA1321646C (en) | 1993-08-24 |
DE68922134T2 (de) | 1995-11-30 |
EP0342687A2 (de) | 1989-11-23 |
EP0342687A3 (de) | 1991-05-08 |
EP0342687B1 (de) | 1995-04-12 |
US4975958A (en) | 1990-12-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |