CA1336841C - Systeme de codage du type multi-implusion - Google Patents
Systeme de codage du type multi-implusionInfo
- Publication number
- CA1336841C CA1336841C CA 563492 CA563492A CA1336841C CA 1336841 C CA1336841 C CA 1336841C CA 563492 CA563492 CA 563492 CA 563492 A CA563492 A CA 563492A CA 1336841 C CA1336841 C CA 1336841C
- Authority
- CA
- Canada
- Prior art keywords
- parameters
- speech signal
- lpc
- frame period
- search frame
- 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 - Lifetime
Links
- 230000004044 response Effects 0.000 claims abstract description 32
- 230000003595 spectral effect Effects 0.000 claims abstract description 23
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 230000007704 transition Effects 0.000 claims description 4
- 230000005284 excitation Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 20
- 230000002194 synthesizing effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- 238000013139 quantization Methods 0.000 description 4
- 101150087426 Gnal gene Proteins 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001131 transforming 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
- G10L19/08—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 (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP87669/1987 | 1987-04-08 | ||
| JP8766987 | 1987-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1336841C true CA1336841C (fr) | 1995-08-29 |
Family
ID=13921347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 563492 Expired - Lifetime CA1336841C (fr) | 1987-04-08 | 1988-04-07 | Systeme de codage du type multi-implusion |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU617993B2 (fr) |
| CA (1) | CA1336841C (fr) |
| GB (1) | GB2205469B (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2084323C (fr) * | 1991-12-03 | 1996-12-03 | Tetsu Taguchi | Systeme de codage de signaux vocaux pouvant transmettre un signal vocal a un faible debit |
| US5351338A (en) * | 1992-07-06 | 1994-09-27 | Telefonaktiebolaget L M Ericsson | Time variable spectral analysis based on interpolation for speech coding |
| RU2464649C1 (ru) * | 2011-06-01 | 2012-10-20 | Корпорация "САМСУНГ ЭЛЕКТРОНИКС Ко., Лтд." | Способ обработки звукового сигнала |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8302985A (nl) * | 1983-08-26 | 1985-03-18 | Philips Nv | Multipulse excitatie lineair predictieve spraakcodeerder. |
| NL8500843A (nl) * | 1985-03-22 | 1986-10-16 | Koninkl Philips Electronics Nv | Multipuls-excitatie lineair-predictieve spraakcoder. |
| JPH0738118B2 (ja) * | 1987-02-04 | 1995-04-26 | 日本電気株式会社 | マルチパルス符号化装置 |
-
1988
- 1988-04-07 CA CA 563492 patent/CA1336841C/fr not_active Expired - Lifetime
- 1988-04-08 GB GB8808318A patent/GB2205469B/en not_active Expired
- 1988-04-08 AU AU14402/88A patent/AU617993B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2205469A (en) | 1988-12-07 |
| GB8808318D0 (en) | 1988-05-11 |
| AU1440288A (en) | 1988-10-13 |
| AU617993B2 (en) | 1991-12-12 |
| GB2205469B (en) | 1991-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |