FI116596B - Vektorkodningsförfarande speciellt för talsignaler - Google Patents

Vektorkodningsförfarande speciellt för talsignaler Download PDF

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Publication number
FI116596B
FI116596B FI955324A FI955324A FI116596B FI 116596 B FI116596 B FI 116596B FI 955324 A FI955324 A FI 955324A FI 955324 A FI955324 A FI 955324A FI 116596 B FI116596 B FI 116596B
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FI
Finland
Prior art keywords
codebooks
codebook
sub
zero
coding method
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Application number
FI955324A
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English (en)
Finnish (fi)
Other versions
FI955324A0 (sv
FI955324A (sv
Inventor
Joerg-Martin Mueller
Bertram Waechter
Original Assignee
Bosch Gmbh Robert
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Classifications

    • 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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • G10L19/13—Residual excited linear prediction [RELP]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3082—Vector coding
    • 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
    • G10L2019/0004—Design or structure of the codebook
    • G10L2019/0005—Multi-stage vector quantisation
    • 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
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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

Claims (7)

1. Vektorkodningsförfarande, i synnerhet för tal-signaler, i vilket används kodböcker, varvid i en första 5 kodbok lagrats kombinationsmönster för ett exciteringsfil-ters exciteringssignaler (vektorer) för generering av syn-tetiska signaler, i synnerhet talsignaler, omfattande n, i synnerhet 4, frän noli awikande till egenvärdet lika och endast beträffande förtecknet olika amplitudvärden eller 10 adresser för lagring av dessa amplitudvärden, och varvid i en andra kodbok lagrats vid varje enskilt tillfälle där-till hörande autokorrelationskoefficienter omfattande föl-jande steg: i den andra kodboken lagras autokorrelationskoef-15 ficienter som kombinerade med autokorrelationsfunktionen för exciteringsfiltrets impulssvar för generering av syn-tetiska signaler, i synnerhet talsignaler, ger den filtre-rade exciteringssignalens energi, endast sadana kombinationsmönster tillats som in-20 nehäller tre frän noil awikande autokorrelationskoeffici- ··· enter, • « « · : de frän noil awikande amplitudvärdena för auto- korrelationskoef f icienterna som ligger utanför korrela- ; tionsmaximum AFK (0) skiljer sig frän varandra endast be- 25 träffande sitt förtecken. I « I
2. Vektorkodningsf örf arande enligt patentkrav 1, ’ kännetecknat av att endast de frän noil awikande autokorrelationskoefficienterna lagras i den första kodbo- • · :,: : ken, vilka ligger utanför korrelationsmaximum (AFK (0) ) . ·...** 30
3. Vektorkodningsf örf arande enligt patentkrav 1 : eller 2, kännetecknat av att för varje möjligt kom- • » · · ,···, binationsmönster bildas en delkodbok, och att i en delkod- • I bok införs endast det aktuella läget för varje beträffande delkodboken likadant kombinationsmönster.
4. Vektorkodningsf örf arande enligt patentkrav 3, kännetecknat av att delkodböckerna är försedda med 116596 10 ett kodord för att särskilja dem frän varandra.
5. Vektorkodningsförfarande enligt patentkrav 3 eller 4, kännetecknat av att kombinat ionsmönstren bildas av fyra koefficienter med amplitudvärdena +1 och - 5 1.
6. Vektorkodningsförfarande enligt nägot av pa-tentkraven 3-5, kännetecknat av att da kodboksläng-den är 256 vektorer, framställs totalt 16 delkodböcker, i vilka införs vid varje enskilt tillfälle kombinations- 10 mönstren radvis för 16 vektorer.
7. Vektorkodningsförfarande enligt patentkrav 6, kännetecknat av att i stället för 16 delkodböcker kan endast 8 delkodböcker framställas, och de övriga 8 delkodböckerna kan genereras frän de 8 tidigare framställ- 15 da delkodböckerna genom inversion av deras förtecken. 1 » > » · * · • · · s * * ♦ • > · i » t * > · ! » · · « · · * t > I · I » · · * · I · I • I · » ( »
FI955324A 1993-05-07 1995-11-06 Vektorkodningsförfarande speciellt för talsignaler FI116596B (sv)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4315313 1993-05-07
DE4315313A DE4315313C2 (de) 1993-05-07 1993-05-07 Vektorcodierverfahren insbesondere für Sprachsignale
PCT/DE1994/000436 WO1994027285A1 (de) 1993-05-07 1994-04-20 Vektorcodierverfahren, insbesondere für sprachsignale
DE9400436 1994-04-20

Publications (3)

Publication Number Publication Date
FI955324A0 FI955324A0 (sv) 1995-11-06
FI955324A FI955324A (sv) 1995-11-06
FI116596B true FI116596B (sv) 2005-12-30

Family

ID=6487537

Family Applications (1)

Application Number Title Priority Date Filing Date
FI955324A FI116596B (sv) 1993-05-07 1995-11-06 Vektorkodningsförfarande speciellt för talsignaler

Country Status (10)

Country Link
US (1) US5729654A (sv)
EP (1) EP0697124B1 (sv)
AU (1) AU682505B2 (sv)
DE (2) DE4315313C2 (sv)
DK (1) DK0697124T3 (sv)
ES (1) ES2140533T3 (sv)
FI (1) FI116596B (sv)
HU (1) HU216557B (sv)
PT (1) PT697124E (sv)
WO (1) WO1994027285A1 (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE19538852A1 (de) * 1995-06-30 1997-01-02 Deutsche Telekom Ag Verfahren und Anordnung zur Klassifizierung von Sprachsignalen
US5781881A (en) * 1995-10-19 1998-07-14 Deutsche Telekom Ag Variable-subframe-length speech-coding classes derived from wavelet-transform parameters
GB2312360B (en) 1996-04-12 2001-01-24 Olympus Optical Co Voice signal coding apparatus

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1164569A (en) * 1981-03-17 1984-03-27 Katsunobu Fushikida System for extraction of pole/zero parameter values
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
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
US4868867A (en) * 1987-04-06 1989-09-19 Voicecraft Inc. Vector excitation speech or audio coder for transmission or storage
US4907276A (en) * 1988-04-05 1990-03-06 The Dsp Group (Israel) Ltd. Fast search method for vector quantizer communication and pattern recognition systems
US5010574A (en) * 1989-06-13 1991-04-23 At&T Bell Laboratories Vector quantizer search arrangement
JP3151874B2 (ja) * 1991-02-26 2001-04-03 日本電気株式会社 音声パラメータ符号化方式および装置
US5339164A (en) * 1991-12-24 1994-08-16 Massachusetts Institute Of Technology Method and apparatus for encoding of data using both vector quantization and runlength encoding and using adaptive runlength encoding
US5327520A (en) * 1992-06-04 1994-07-05 At&T Bell Laboratories Method of use of voice message coder/decoder
US5457783A (en) * 1992-08-07 1995-10-10 Pacific Communication Sciences, Inc. Adaptive speech coder having code excited linear prediction
US5621852A (en) * 1993-12-14 1997-04-15 Interdigital Technology Corporation Efficient codebook structure for code excited linear prediction coding

Also Published As

Publication number Publication date
AU682505B2 (en) 1997-10-09
DE4315313A1 (de) 1994-11-10
FI955324A0 (sv) 1995-11-06
HU216557B (hu) 1999-07-28
HUT73533A (en) 1996-08-28
DE4315313C2 (de) 2001-11-08
DK0697124T3 (da) 2000-04-25
WO1994027285A1 (de) 1994-11-24
FI955324A (sv) 1995-11-06
ES2140533T3 (es) 2000-03-01
EP0697124B1 (de) 1999-10-27
EP0697124A1 (de) 1996-02-21
US5729654A (en) 1998-03-17
PT697124E (pt) 2000-04-28
AU6502694A (en) 1994-12-12
HU9503180D0 (en) 1995-12-28
DE59408863D1 (de) 1999-12-02

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