WO1998004046A3 - Enhanced encoding of dtmf and other signalling tones - Google Patents
Enhanced encoding of dtmf and other signalling tones Download PDFInfo
- Publication number
- WO1998004046A3 WO1998004046A3 PCT/CA1997/000516 CA9700516W WO9804046A3 WO 1998004046 A3 WO1998004046 A3 WO 1998004046A3 CA 9700516 W CA9700516 W CA 9700516W WO 9804046 A3 WO9804046 A3 WO 9804046A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spectrum
- spectrum vector
- voice signal
- codebook
- vector
- Prior art date
Links
- 230000011664 signaling Effects 0.000 title 1
- 238000001228 spectrum Methods 0.000 abstract 15
- 238000013139 quantization Methods 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 1
- 230000000306 recurrent effect 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
- G10L19/07—Line spectrum pair [LSP] vocoders
-
- 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
- G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
-
- 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
- G10L2019/0001—Codebooks
- G10L2019/0016—Codebook for LPC parameters
-
- 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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/78—Detection of presence or absence of voice signals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97931602A EP0913034A2 (en) | 1996-07-17 | 1997-07-17 | Enhanced encoding of dtmf and other signalling tones |
AU35345/97A AU3534597A (en) | 1996-07-17 | 1997-07-17 | Enhanced encoding of dtmf and other signalling tones |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2191196P | 1996-07-17 | 1996-07-17 | |
US60/021,911 | 1996-07-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1998004046A2 WO1998004046A2 (en) | 1998-01-29 |
WO1998004046A3 true WO1998004046A3 (en) | 1998-03-26 |
Family
ID=21806795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CA1997/000516 WO1998004046A2 (en) | 1996-07-17 | 1997-07-17 | Enhanced encoding of dtmf and other signalling tones |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0913034A2 (en) |
AU (1) | AU3534597A (en) |
CA (1) | CA2258183A1 (en) |
WO (1) | WO1998004046A2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002055699A (en) | 2000-08-10 | 2002-02-20 | Mitsubishi Electric Corp | Device and method for encoding voice |
US7970606B2 (en) | 2002-11-13 | 2011-06-28 | Digital Voice Systems, Inc. | Interoperable vocoder |
US7634399B2 (en) | 2003-01-30 | 2009-12-15 | Digital Voice Systems, Inc. | Voice transcoder |
US8359197B2 (en) | 2003-04-01 | 2013-01-22 | Digital Voice Systems, Inc. | Half-rate vocoder |
US8036886B2 (en) | 2006-12-22 | 2011-10-11 | Digital Voice Systems, Inc. | Estimation of pulsed speech model parameters |
US11270714B2 (en) | 2020-01-08 | 2022-03-08 | Digital Voice Systems, Inc. | Speech coding using time-varying interpolation |
US11990144B2 (en) | 2021-07-28 | 2024-05-21 | Digital Voice Systems, Inc. | Reducing perceived effects of non-voice data in digital speech |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0443548A2 (en) * | 1990-02-22 | 1991-08-28 | Nec Corporation | Speech coder |
EP0545386A2 (en) * | 1991-12-03 | 1993-06-09 | Nec Corporation | Method for speech coding and voice-coder |
EP0573398A2 (en) * | 1992-06-01 | 1993-12-08 | Hughes Aircraft Company | C.E.L.P. Vocoder |
EP0607989A2 (en) * | 1993-01-22 | 1994-07-27 | Nec Corporation | Voice coder system |
-
1997
- 1997-07-17 WO PCT/CA1997/000516 patent/WO1998004046A2/en not_active Application Discontinuation
- 1997-07-17 CA CA 2258183 patent/CA2258183A1/en not_active Abandoned
- 1997-07-17 EP EP97931602A patent/EP0913034A2/en not_active Ceased
- 1997-07-17 AU AU35345/97A patent/AU3534597A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0443548A2 (en) * | 1990-02-22 | 1991-08-28 | Nec Corporation | Speech coder |
EP0545386A2 (en) * | 1991-12-03 | 1993-06-09 | Nec Corporation | Method for speech coding and voice-coder |
EP0573398A2 (en) * | 1992-06-01 | 1993-12-08 | Hughes Aircraft Company | C.E.L.P. Vocoder |
EP0607989A2 (en) * | 1993-01-22 | 1994-07-27 | Nec Corporation | Voice coder system |
Also Published As
Publication number | Publication date |
---|---|
AU3534597A (en) | 1998-02-10 |
CA2258183A1 (en) | 1998-01-29 |
EP0913034A2 (en) | 1999-05-06 |
WO1998004046A2 (en) | 1998-01-29 |
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