WO2003021573A1 - Codec - Google Patents
Codec Download PDFInfo
- Publication number
- WO2003021573A1 WO2003021573A1 PCT/JP2001/007580 JP0107580W WO03021573A1 WO 2003021573 A1 WO2003021573 A1 WO 2003021573A1 JP 0107580 W JP0107580 W JP 0107580W WO 03021573 A1 WO03021573 A1 WO 03021573A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coding
- codec
- parameters
- feature
- feature parameter
- Prior art date
Links
- 238000000034 method Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000010276 construction Methods 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
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
Landscapes
- Engineering & Computer Science (AREA)
- Quality & Reliability (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)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003525836A JPWO2003021573A1 (en) | 2001-08-31 | 2001-08-31 | Codec |
PCT/JP2001/007580 WO2003021573A1 (en) | 2001-08-31 | 2001-08-31 | Codec |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2001/007580 WO2003021573A1 (en) | 2001-08-31 | 2001-08-31 | Codec |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003021573A1 true WO2003021573A1 (en) | 2003-03-13 |
Family
ID=11737692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/007580 WO2003021573A1 (en) | 2001-08-31 | 2001-08-31 | Codec |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPWO2003021573A1 (en) |
WO (1) | WO2003021573A1 (en) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03108824A (en) * | 1989-06-29 | 1991-05-09 | Fujitsu Ltd | Voice coding/decoding transmission system |
JPH08279811A (en) * | 1995-04-07 | 1996-10-22 | Nec Corp | Voice data converter |
JPH08305398A (en) * | 1995-04-28 | 1996-11-22 | Matsushita Electric Ind Co Ltd | Voice decoding device |
JPH09503874A (en) * | 1994-08-05 | 1997-04-15 | クゥアルコム・インコーポレイテッド | Method and apparatus for performing reduced rate, variable rate speech analysis and synthesis |
JPH1049199A (en) * | 1996-08-02 | 1998-02-20 | Nec Corp | Silence compressed voice coding and decoding device |
JPH10124099A (en) * | 1996-10-15 | 1998-05-15 | Olympus Optical Co Ltd | Speech recording device |
JP2000010591A (en) * | 1998-06-19 | 2000-01-14 | Oki Electric Ind Co Ltd | Voice encoding rate selector and voice encoding device |
JP2000078274A (en) * | 1998-08-18 | 2000-03-14 | Denso Corp | Message recorder for variable rate coding system, and method for recording size reduced message in the variable rate coding system |
JP2001024524A (en) * | 1999-05-05 | 2001-01-26 | Texas Instr Inc <Ti> | Map rate detection for variable rate codec |
JP2001318694A (en) * | 2000-05-10 | 2001-11-16 | Toshiba Corp | Device and method for signal processing and recording medium |
-
2001
- 2001-08-31 JP JP2003525836A patent/JPWO2003021573A1/en not_active Withdrawn
- 2001-08-31 WO PCT/JP2001/007580 patent/WO2003021573A1/en active Application Filing
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03108824A (en) * | 1989-06-29 | 1991-05-09 | Fujitsu Ltd | Voice coding/decoding transmission system |
JPH09503874A (en) * | 1994-08-05 | 1997-04-15 | クゥアルコム・インコーポレイテッド | Method and apparatus for performing reduced rate, variable rate speech analysis and synthesis |
JPH08279811A (en) * | 1995-04-07 | 1996-10-22 | Nec Corp | Voice data converter |
JPH08305398A (en) * | 1995-04-28 | 1996-11-22 | Matsushita Electric Ind Co Ltd | Voice decoding device |
JPH1049199A (en) * | 1996-08-02 | 1998-02-20 | Nec Corp | Silence compressed voice coding and decoding device |
JPH10124099A (en) * | 1996-10-15 | 1998-05-15 | Olympus Optical Co Ltd | Speech recording device |
JP2000010591A (en) * | 1998-06-19 | 2000-01-14 | Oki Electric Ind Co Ltd | Voice encoding rate selector and voice encoding device |
JP2000078274A (en) * | 1998-08-18 | 2000-03-14 | Denso Corp | Message recorder for variable rate coding system, and method for recording size reduced message in the variable rate coding system |
JP2001024524A (en) * | 1999-05-05 | 2001-01-26 | Texas Instr Inc <Ti> | Map rate detection for variable rate codec |
JP2001318694A (en) * | 2000-05-10 | 2001-11-16 | Toshiba Corp | Device and method for signal processing and recording medium |
Also Published As
Publication number | Publication date |
---|---|
JPWO2003021573A1 (en) | 2004-12-24 |
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