CA1240396A - Relp vocoder implemented in digital signal processors - Google Patents
Relp vocoder implemented in digital signal processorsInfo
- Publication number
- CA1240396A CA1240396A CA000494448A CA494448A CA1240396A CA 1240396 A CA1240396 A CA 1240396A CA 000494448 A CA000494448 A CA 000494448A CA 494448 A CA494448 A CA 494448A CA 1240396 A CA1240396 A CA 1240396A
- Authority
- CA
- Canada
- Prior art keywords
- subroutine
- signal
- samples
- residual signal
- pitch
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 54
- 238000013139 quantization Methods 0.000 claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 238000005311 autocorrelation function Methods 0.000 claims description 39
- 238000004458 analytical method Methods 0.000 claims description 28
- 230000015572 biosynthetic process Effects 0.000 claims description 13
- 238000003786 synthesis reaction Methods 0.000 claims description 13
- 230000001172 regenerating effect Effects 0.000 claims description 11
- 230000005284 excitation Effects 0.000 claims description 8
- 230000003044 adaptive effect Effects 0.000 claims description 5
- 239000000872 buffer Substances 0.000 description 21
- 230000006870 function Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 6
- 230000001755 vocal effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 235000009434 Actinidia chinensis Nutrition 0.000 description 4
- 244000298697 Actinidia deliciosa Species 0.000 description 4
- 235000009436 Actinidia deliciosa Nutrition 0.000 description 4
- 238000010606 normalization Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 241000282320 Panthera leo Species 0.000 description 2
- 238000013523 data management Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000012552 review Methods 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical class [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 208000030979 Language Development disease Diseases 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 229940069428 antacid Drugs 0.000 description 1
- 239000003159 antacid agent Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 210000004894 snout Anatomy 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002311 subsequent effect Effects 0.000 description 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Computational Linguistics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Cash Registers Or Receiving Machines (AREA)
- Telephone Function (AREA)
- Input From Keyboards Or The Like (AREA)
- Silicon Polymers (AREA)
- Stereo-Broadcasting Methods (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66744684A | 1984-11-02 | 1984-11-02 | |
| US667,446 | 1984-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1240396A true CA1240396A (en) | 1988-08-09 |
Family
ID=24678262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000494448A Expired CA1240396A (en) | 1984-11-02 | 1985-11-01 | Relp vocoder implemented in digital signal processors |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0203940A4 (da) |
| JP (1) | JPS63500896A (da) |
| AU (1) | AU577641B2 (da) |
| CA (1) | CA1240396A (da) |
| DK (1) | DK311386A (da) |
| NO (1) | NO862602L (da) |
| WO (1) | WO1986002726A1 (da) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4675863A (en) * | 1985-03-20 | 1987-06-23 | International Mobile Machines Corp. | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
| JP2626223B2 (ja) * | 1990-09-26 | 1997-07-02 | 日本電気株式会社 | 音声符号化装置 |
| US6006174A (en) * | 1990-10-03 | 1999-12-21 | Interdigital Technology Coporation | Multiple impulse excitation speech encoder and decoder |
| US5235670A (en) * | 1990-10-03 | 1993-08-10 | Interdigital Patents Corporation | Multiple impulse excitation speech encoder and decoder |
| ES2143396B1 (es) * | 1998-02-04 | 2000-12-16 | Univ Malaga | Circuito integrado monolitico codec-encriptador de baja tasa para señales de voz. |
| US7907977B2 (en) | 2007-10-02 | 2011-03-15 | Agere Systems Inc. | Echo canceller with correlation using pre-whitened data values received by downlink codec |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3431362A (en) * | 1966-04-22 | 1969-03-04 | Bell Telephone Labor Inc | Voice-excited,bandwidth reduction system employing pitch frequency pulses generated by unencoded baseband signal |
| US3750024A (en) * | 1971-06-16 | 1973-07-31 | Itt Corp Nutley | Narrow band digital speech communication system |
| GB2102254B (en) * | 1981-05-11 | 1985-08-07 | Kokusai Denshin Denwa Co Ltd | A speech analysis-synthesis system |
-
1985
- 1985-11-01 CA CA000494448A patent/CA1240396A/en not_active Expired
- 1985-11-01 EP EP19850905709 patent/EP0203940A4/en not_active Withdrawn
- 1985-11-01 JP JP50505785A patent/JPS63500896A/ja active Pending
- 1985-11-01 AU AU50198/85A patent/AU577641B2/en not_active Ceased
- 1985-11-01 WO PCT/US1985/002168 patent/WO1986002726A1/en not_active Application Discontinuation
-
1986
- 1986-06-27 NO NO86862602A patent/NO862602L/no unknown
- 1986-06-30 DK DK311386A patent/DK311386A/da not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO862602L (no) | 1986-09-01 |
| EP0203940A1 (en) | 1986-12-10 |
| EP0203940A4 (en) | 1987-04-07 |
| NO862602D0 (no) | 1986-06-27 |
| DK311386D0 (da) | 1986-06-30 |
| AU577641B2 (en) | 1988-09-29 |
| WO1986002726A1 (en) | 1986-05-09 |
| AU5019885A (en) | 1986-05-15 |
| DK311386A (da) | 1986-06-30 |
| JPS63500896A (ja) | 1988-03-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0503684B1 (en) | Adaptive filtering method for speech and audio | |
| CA1181854A (en) | Digital speech coder | |
| US5339384A (en) | Code-excited linear predictive coding with low delay for speech or audio signals | |
| EP0392126B1 (en) | Fast pitch tracking process for LTP-based speech coders | |
| US5903866A (en) | Waveform interpolation speech coding using splines | |
| US4964166A (en) | Adaptive transform coder having minimal bit allocation processing | |
| US6681204B2 (en) | Apparatus and method for encoding a signal as well as apparatus and method for decoding a signal | |
| EP0573216A2 (en) | CELP vocoder | |
| US6249758B1 (en) | Apparatus and method for coding speech signals by making use of voice/unvoiced characteristics of the speech signals | |
| US5924061A (en) | Efficient decomposition in noise and periodic signal waveforms in waveform interpolation | |
| US4890328A (en) | Voice synthesis utilizing multi-level filter excitation | |
| KR19990036044A (ko) | 선 스펙트럼 제곱근 발생 및 인코딩 방법 및 장치 | |
| EP0658876A2 (en) | Speech parameter encoder | |
| JP2645465B2 (ja) | 低遅延低ビツトレート音声コーダ | |
| EP0107659A1 (en) | Voice encoder and synthesizer | |
| CA1240396A (en) | Relp vocoder implemented in digital signal processors | |
| Cuperman et al. | Backward adaptation for low delay vector excitation coding of speech at 16 kbit/s | |
| US5673361A (en) | System and method for performing predictive scaling in computing LPC speech coding coefficients | |
| US4908863A (en) | Multi-pulse coding system | |
| EP0780832A2 (en) | Speech coding device for estimating an error of power envelopes of synthetic and input speech signals | |
| EP1727129A2 (en) | Gradient descent optimization of linear prediction coefficients for speech coders | |
| Matsuyama et al. | Voice coding and tree encoding speech compression systems based upon inverse filter matching | |
| EP0573215A2 (en) | Vocoder synchronization | |
| Tseng | An analysis-by-synthesis linear predictive model for narrowband speech coding | |
| EP1326236B1 (en) | Efficient implementation of joint optimization of excitation and model parameters in multipulse speech coders |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |