CA1202419A - Codeur de paroles - Google Patents
Codeur de parolesInfo
- Publication number
- CA1202419A CA1202419A CA000449198A CA449198A CA1202419A CA 1202419 A CA1202419 A CA 1202419A CA 000449198 A CA000449198 A CA 000449198A CA 449198 A CA449198 A CA 449198A CA 1202419 A CA1202419 A CA 1202419A
- Authority
- CA
- Canada
- Prior art keywords
- signal
- speech
- filter
- weighting
- encoder
- 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
- 230000005284 excitation Effects 0.000 claims abstract description 28
- 230000001755 vocal effect Effects 0.000 claims description 7
- 238000005311 autocorrelation function Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 230000002596 correlated effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000010079 rubber tapping Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000005534 acoustic noise Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- SAPNXPWPAUFAJU-UHFFFAOYSA-N lofepramine Chemical compound C12=CC=CC=C2CCC2=CC=CC=C2N1CCCN(C)CC(=O)C1=CC=C(Cl)C=C1 SAPNXPWPAUFAJU-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 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
- G10L19/08—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 (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8306685A GB2137054B (en) | 1983-03-11 | 1983-03-11 | Speech encoder |
| GB8306685 | 1983-03-11 | ||
| GB8333037 | 1983-12-10 | ||
| GB8333037 | 1983-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1202419A true CA1202419A (fr) | 1986-03-25 |
Family
ID=26285473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000449198A Expired CA1202419A (fr) | 1983-03-11 | 1984-03-09 | Codeur de paroles |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0119033B1 (fr) |
| CA (1) | CA1202419A (fr) |
| DE (1) | DE3463192D1 (fr) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472832A (en) * | 1981-12-01 | 1984-09-18 | At&T Bell Laboratories | Digital speech coder |
-
1984
- 1984-02-28 DE DE8484301302T patent/DE3463192D1/de not_active Expired
- 1984-02-28 EP EP19840301302 patent/EP0119033B1/fr not_active Expired
- 1984-03-09 CA CA000449198A patent/CA1202419A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3463192D1 (en) | 1987-05-21 |
| EP0119033A1 (fr) | 1984-09-19 |
| EP0119033B1 (fr) | 1987-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gersho | Advances in speech and audio compression | |
| US5060269A (en) | Hybrid switched multi-pulse/stochastic speech coding technique | |
| Atal | High-quality speech at low bit rates: Multi-pulse and stochastically excited linear predictive coders | |
| US6782359B2 (en) | Determining linear predictive coding filter parameters for encoding a voice signal | |
| JP2004514182A (ja) | 広帯域信号コーディング用の代数コードブック中のパルス位置と符号の索引付け方法 | |
| JP2002268686A (ja) | 音声符号化装置及び音声復号化装置 | |
| EP1103953B1 (fr) | Procédé de dissimulation de pertes de trames de parole | |
| Hagen et al. | Voicing-specific LPC quantization for variable-rate speech coding | |
| CA1202419A (fr) | Codeur de paroles | |
| JP2853170B2 (ja) | 音声符号化復号化方式 | |
| JP3071800B2 (ja) | 適応ポストフィルタ | |
| Tseng | An analysis-by-synthesis linear predictive model for narrowband speech coding | |
| Kim et al. | On a Reduction of Pitch Searching Time by Preprocessing in the CELP Vocoder | |
| JP3103108B2 (ja) | 音声符号化装置 | |
| GB2137054A (en) | Speech encoder | |
| Yuan | The weighted sum of the line spectrum pair for noisy speech | |
| Kim et al. | On a Reduction of Pitch Searching Time by Preliminary Pitch in the CELP Vocoder | |
| Zhang | Speech transform coding using ranked vector quantization | |
| Kwong et al. | Design and implementation of a parametric speech coder | |
| GB2352949A (en) | Speech coder for communications unit | |
| Gersho | Advances in speech and audio compression | |
| Walls | Enhanced spectral modeling for sinusoidal speech coders | |
| Farsi | Advanced Pre-and-post processing techniques for speech coding | |
| Bae et al. | On a reduction of pitch searching time by preliminary pitch in the CELP vocoder | |
| Bouzoubaa | Low bit-rate speech coding via multipulse plus noise excitation and LPC parameter optimization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |