NO914105L - PROCEDURE AND DEVICE FOR CODING AND DECODING ANALOGUE SIGNALS - Google Patents
PROCEDURE AND DEVICE FOR CODING AND DECODING ANALOGUE SIGNALSInfo
- Publication number
- NO914105L NO914105L NO91914105A NO914105A NO914105L NO 914105 L NO914105 L NO 914105L NO 91914105 A NO91914105 A NO 91914105A NO 914105 A NO914105 A NO 914105A NO 914105 L NO914105 L NO 914105L
- Authority
- NO
- Norway
- Prior art keywords
- components
- stp
- decoder
- phases
- combined
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000001228 spectrum Methods 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 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)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Analogue/Digital Conversion (AREA)
- Electrically Operated Instructional Devices (AREA)
Abstract
Frequency components are calculated from the STP-filtered speech signal. The amplitudes of these are combined in a manner such that the resultant values are associated with frequencies which are situated equidistantly on a linear Bark scale. Said components are quantised, possibly after scaling. In the decoder, the components are again distributed over the frequency spectrum. In the coder, the fundamental regularity D is determined with an LTP technique, after which it is transmitted. In the decoder the phases of the reconstructed signal at the spacing D in the past are determined. These phases are combined with the amplitudes already present in the frequency spectrum, after which transformation back to the time domain takes place. Inverse STP filtering is then carried out.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL9002308A NL9002308A (en) | 1990-10-23 | 1990-10-23 | METHOD FOR CODING AND DECODING A SAMPLED ANALOGUE SIGNAL WITH A REPEATING CHARACTER AND AN APPARATUS FOR CODING AND DECODING ACCORDING TO THIS METHOD |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO914105D0 NO914105D0 (en) | 1991-10-18 |
| NO914105L true NO914105L (en) | 1992-04-24 |
| NO305188B1 NO305188B1 (en) | 1999-04-12 |
Family
ID=19857866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO914105A NO305188B1 (en) | 1990-10-23 | 1991-10-18 | Method and apparatus for encoding and decoding analog signals |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0482699B1 (en) |
| JP (1) | JP2958726B2 (en) |
| AT (1) | ATE157188T1 (en) |
| CA (1) | CA2053133C (en) |
| DE (1) | DE69127339T2 (en) |
| DK (1) | DK0482699T3 (en) |
| ES (1) | ES2106051T3 (en) |
| FI (1) | FI105623B (en) |
| NL (1) | NL9002308A (en) |
| NO (1) | NO305188B1 (en) |
| PT (1) | PT99294A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07261797A (en) * | 1994-03-18 | 1995-10-13 | Mitsubishi Electric Corp | Signal encoding device and signal decoding device |
| JPH09127995A (en) * | 1995-10-26 | 1997-05-16 | Sony Corp | Signal decoding method and signal decoder |
| JP2000165251A (en) * | 1998-11-27 | 2000-06-16 | Matsushita Electric Ind Co Ltd | Audio signal coding device and microphone realizing the same |
| FI116992B (en) | 1999-07-05 | 2006-04-28 | Nokia Corp | Methods, systems, and devices for enhancing audio coding and transmission |
| EP1113432B1 (en) * | 1999-12-24 | 2011-03-30 | International Business Machines Corporation | Method and system for detecting identical digital data |
| CN114519996B (en) * | 2022-04-20 | 2022-07-08 | 北京远鉴信息技术有限公司 | Method, device and equipment for determining voice synthesis type and storage medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5650398A (en) * | 1979-10-01 | 1981-05-07 | Hitachi Ltd | Sound synthesizer |
| US4742550A (en) * | 1984-09-17 | 1988-05-03 | Motorola, Inc. | 4800 BPS interoperable relp system |
| JP2892462B2 (en) * | 1990-08-27 | 1999-05-17 | 沖電気工業株式会社 | Code-excited linear predictive encoder |
-
1990
- 1990-10-23 NL NL9002308A patent/NL9002308A/en not_active Application Discontinuation
-
1991
- 1991-10-10 CA CA002053133A patent/CA2053133C/en not_active Expired - Lifetime
- 1991-10-16 ES ES91202675T patent/ES2106051T3/en not_active Expired - Lifetime
- 1991-10-16 EP EP91202675A patent/EP0482699B1/en not_active Expired - Lifetime
- 1991-10-16 DK DK91202675.4T patent/DK0482699T3/en active
- 1991-10-16 DE DE69127339T patent/DE69127339T2/en not_active Expired - Lifetime
- 1991-10-16 AT AT91202675T patent/ATE157188T1/en not_active IP Right Cessation
- 1991-10-17 JP JP3332967A patent/JP2958726B2/en not_active Expired - Lifetime
- 1991-10-18 NO NO914105A patent/NO305188B1/en not_active IP Right Cessation
- 1991-10-22 PT PT99294A patent/PT99294A/en not_active Application Discontinuation
- 1991-10-23 FI FI914993A patent/FI105623B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05268098A (en) | 1993-10-15 |
| NO914105D0 (en) | 1991-10-18 |
| NL9002308A (en) | 1992-05-18 |
| EP0482699B1 (en) | 1997-08-20 |
| JP2958726B2 (en) | 1999-10-06 |
| FI914993A0 (en) | 1991-10-23 |
| DE69127339D1 (en) | 1997-09-25 |
| ES2106051T3 (en) | 1997-11-01 |
| CA2053133C (en) | 1996-05-21 |
| FI105623B (en) | 2000-09-15 |
| EP0482699A3 (en) | 1992-08-19 |
| DK0482699T3 (en) | 1998-03-30 |
| NO305188B1 (en) | 1999-04-12 |
| CA2053133A1 (en) | 1992-04-24 |
| PT99294A (en) | 1994-01-31 |
| ATE157188T1 (en) | 1997-09-15 |
| DE69127339T2 (en) | 1998-01-29 |
| FI914993A (en) | 1992-04-24 |
| EP0482699A2 (en) | 1992-04-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1K | Patent expired |