DE68917552D1 - Method and device for coding and decoding speech signals using multipulse excitation. - Google Patents
Method and device for coding and decoding speech signals using multipulse excitation.Info
- Publication number
- DE68917552D1 DE68917552D1 DE68917552T DE68917552T DE68917552D1 DE 68917552 D1 DE68917552 D1 DE 68917552D1 DE 68917552 T DE68917552 T DE 68917552T DE 68917552 T DE68917552 T DE 68917552T DE 68917552 D1 DE68917552 D1 DE 68917552D1
- Authority
- DE
- Germany
- Prior art keywords
- coding
- synthesis
- speech signals
- excitation
- term
- 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
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
- G10L19/04—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
Abstract
A coding-decoding method using a mulipulse analysis-by-synthesis excitation technique comprises, in the decoding phase, cascaded long-term and short-term synthesis filterings. The lag and gain of the long-term synthesis and the excitation pulses are determined during the coding phase within the analysis-by-synthesis procedure in two subsequent steps, in the first of which the lag and the gain are determined, while in the second the positions and the amplitudes of the excitation pulses are determined. The invention concerns also the device performing the method.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT67868/88A IT1224453B (en) | 1988-09-28 | 1988-09-28 | PROCEDURE AND DEVICE FOR CODING DECODING OF VOICE SIGNALS WITH THE USE OF MULTIPLE PULSE EXCITATION |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68917552D1 true DE68917552D1 (en) | 1994-09-22 |
DE68917552T2 DE68917552T2 (en) | 1995-01-12 |
Family
ID=11305936
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68917552T Expired - Fee Related DE68917552T2 (en) | 1988-09-28 | 1989-09-27 | Method and device for coding and decoding speech signals using multipulse excitation. |
DE198989117837T Pending DE361432T1 (en) | 1988-09-28 | 1989-09-27 | METHOD AND DEVICE FOR CODING AND DECODING VOICE SIGNALS USING MULTIPULES EXCITATION. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE198989117837T Pending DE361432T1 (en) | 1988-09-28 | 1989-09-27 | METHOD AND DEVICE FOR CODING AND DECODING VOICE SIGNALS USING MULTIPULES EXCITATION. |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0361432B1 (en) |
AT (1) | ATE110180T1 (en) |
DE (2) | DE68917552T2 (en) |
ES (1) | ES2017906T3 (en) |
GR (1) | GR900300170T1 (en) |
IT (1) | IT1224453B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69232879T2 (en) * | 1991-02-26 | 2003-05-08 | Nec Corp | Speech parameter coding device |
FI98104C (en) * | 1991-05-20 | 1997-04-10 | Nokia Mobile Phones Ltd | Procedures for generating an excitation vector and digital speech encoder |
ES2042410B1 (en) * | 1992-04-15 | 1997-01-01 | Control Sys S A | ENCODING METHOD AND VOICE ENCODER FOR EQUIPMENT AND COMMUNICATION SYSTEMS. |
FI95086C (en) * | 1992-11-26 | 1995-12-11 | Nokia Mobile Phones Ltd | Method for efficient coding of a speech signal |
FI96248C (en) * | 1993-05-06 | 1996-05-27 | Nokia Mobile Phones Ltd | Method for providing a synthetic filter for long-term interval and synthesis filter for speech coder |
GB9408037D0 (en) * | 1994-04-22 | 1994-06-15 | Philips Electronics Uk Ltd | Analogue signal coder |
-
1988
- 1988-09-28 IT IT67868/88A patent/IT1224453B/en active
-
1989
- 1989-09-27 EP EP89117837A patent/EP0361432B1/en not_active Expired - Lifetime
- 1989-09-27 AT AT89117837T patent/ATE110180T1/en active
- 1989-09-27 ES ES89117837T patent/ES2017906T3/en not_active Expired - Lifetime
- 1989-09-27 DE DE68917552T patent/DE68917552T2/en not_active Expired - Fee Related
- 1989-09-27 DE DE198989117837T patent/DE361432T1/en active Pending
-
1991
- 1991-09-27 GR GR90300170T patent/GR900300170T1/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0361432A2 (en) | 1990-04-04 |
DE68917552T2 (en) | 1995-01-12 |
IT1224453B (en) | 1990-10-04 |
DE361432T1 (en) | 1991-03-21 |
IT8867868A0 (en) | 1988-09-28 |
ATE110180T1 (en) | 1994-09-15 |
GR900300170T1 (en) | 1991-09-27 |
ES2017906T3 (en) | 1994-10-16 |
EP0361432B1 (en) | 1994-08-17 |
ES2017906A4 (en) | 1991-03-16 |
EP0361432A3 (en) | 1990-09-26 |
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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 |