DE3670712D1 - Verfahren zur sprachcodierung mit niedriger bitrate unter verwendung eines mehrimpulsanregungssignals. - Google Patents
Verfahren zur sprachcodierung mit niedriger bitrate unter verwendung eines mehrimpulsanregungssignals.Info
- Publication number
- DE3670712D1 DE3670712D1 DE8686103770T DE3670712T DE3670712D1 DE 3670712 D1 DE3670712 D1 DE 3670712D1 DE 8686103770 T DE8686103770 T DE 8686103770T DE 3670712 T DE3670712 T DE 3670712T DE 3670712 D1 DE3670712 D1 DE 3670712D1
- Authority
- DE
- Germany
- Prior art keywords
- bit rate
- excitation signal
- coding method
- low bit
- speech coding
- 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
- 230000005284 excitation Effects 0.000 title 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
- G10L19/08—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
Landscapes
- Engineering & Computer Science (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8504304A FR2579356B1 (fr) | 1985-03-22 | 1985-03-22 | Procede de codage a faible debit de la parole a signal multi-impulsionnel d'excitation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3670712D1 true DE3670712D1 (de) | 1990-05-31 |
Family
ID=9317484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686103770T Expired - Fee Related DE3670712D1 (de) | 1985-03-22 | 1986-03-20 | Verfahren zur sprachcodierung mit niedriger bitrate unter verwendung eines mehrimpulsanregungssignals. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4847905A (de) |
EP (1) | EP0195441B1 (de) |
CA (1) | CA1241117A (de) |
DE (1) | DE3670712D1 (de) |
DK (1) | DK126986A (de) |
FR (1) | FR2579356B1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1337217C (en) * | 1987-08-28 | 1995-10-03 | Daniel Kenneth Freeman | Speech coding |
USRE35057E (en) * | 1987-08-28 | 1995-10-10 | British Telecommunications Public Limited Company | Speech coding using sparse vector codebook and cyclic shift techniques |
SE463691B (sv) * | 1989-05-11 | 1991-01-07 | Ericsson Telefon Ab L M | Foerfarande att utplacera excitationspulser foer en lineaerprediktiv kodare (lpc) som arbetar enligt multipulsprincipen |
JP2940005B2 (ja) * | 1989-07-20 | 1999-08-25 | 日本電気株式会社 | 音声符号化装置 |
US5673364A (en) * | 1993-12-01 | 1997-09-30 | The Dsp Group Ltd. | System and method for compression and decompression of audio signals |
AU696092B2 (en) * | 1995-01-12 | 1998-09-03 | Digital Voice Systems, Inc. | Estimation of excitation parameters |
US6012025A (en) * | 1998-01-28 | 2000-01-04 | Nokia Mobile Phones Limited | Audio coding method and apparatus using backward adaptive prediction |
US5963897A (en) * | 1998-02-27 | 1999-10-05 | Lernout & Hauspie Speech Products N.V. | Apparatus and method for hybrid excited linear prediction speech encoding |
DE69931641T2 (de) * | 1998-09-11 | 2006-10-05 | Motorola, Inc., Schaumburg | Verfahren zur Kodierung von Informationssignalen |
EP2009623A1 (de) * | 2007-06-27 | 2008-12-31 | Nokia Siemens Networks Oy | Sprachkodierung |
US8036886B2 (en) * | 2006-12-22 | 2011-10-11 | Digital Voice Systems, Inc. | Estimation of pulsed speech model parameters |
US11270714B2 (en) | 2020-01-08 | 2022-03-08 | Digital Voice Systems, Inc. | Speech coding using time-varying interpolation |
GB2596821A (en) | 2020-07-07 | 2022-01-12 | Validsoft Ltd | Computer-generated speech detection |
US11990144B2 (en) | 2021-07-28 | 2024-05-21 | Digital Voice Systems, Inc. | Reducing perceived effects of non-voice data in digital speech |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4133976A (en) * | 1978-04-07 | 1979-01-09 | Bell Telephone Laboratories, Incorporated | Predictive speech signal coding with reduced noise effects |
US4472832A (en) * | 1981-12-01 | 1984-09-18 | At&T Bell Laboratories | Digital speech coder |
US4720861A (en) * | 1985-12-24 | 1988-01-19 | Itt Defense Communications A Division Of Itt Corporation | Digital speech coding circuit |
-
1985
- 1985-03-22 FR FR8504304A patent/FR2579356B1/fr not_active Expired
-
1986
- 1986-03-18 CA CA000504346A patent/CA1241117A/fr not_active Expired
- 1986-03-19 DK DK126986A patent/DK126986A/da not_active Application Discontinuation
- 1986-03-20 EP EP86103770A patent/EP0195441B1/de not_active Expired - Lifetime
- 1986-03-20 DE DE8686103770T patent/DE3670712D1/de not_active Expired - Fee Related
- 1986-03-24 US US06/843,487 patent/US4847905A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DK126986D0 (da) | 1986-03-19 |
CA1241117A (fr) | 1988-08-23 |
US4847905A (en) | 1989-07-11 |
DK126986A (da) | 1986-09-23 |
FR2579356A1 (fr) | 1986-09-26 |
FR2579356B1 (fr) | 1987-05-07 |
EP0195441B1 (de) | 1990-04-25 |
EP0195441A1 (de) | 1986-09-24 |
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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 |