ATE555471T1 - Injektions-hochfrequenzrauschen in impulserregung für celp mit niedriger bitrate - Google Patents
Injektions-hochfrequenzrauschen in impulserregung für celp mit niedriger bitrateInfo
- Publication number
- ATE555471T1 ATE555471T1 AT01995389T AT01995389T ATE555471T1 AT E555471 T1 ATE555471 T1 AT E555471T1 AT 01995389 T AT01995389 T AT 01995389T AT 01995389 T AT01995389 T AT 01995389T AT E555471 T1 ATE555471 T1 AT E555471T1
- Authority
- AT
- Austria
- Prior art keywords
- high frequency
- frequency noise
- pulse excitation
- low bitrate
- injection high
- Prior art date
Links
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
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] 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
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
- G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
-
- 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
- G10L2019/0004—Design or structure of the codebook
- G10L2019/0005—Multi-stage vector quantisation
-
- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
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)
- Quality & Reliability (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Electrophonic Musical Instruments (AREA)
- Analogue/Digital Conversion (AREA)
- Dc Digital Transmission (AREA)
- Manipulation Of Pulses (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/755,441 US6529867B2 (en) | 2000-09-15 | 2001-01-05 | Injecting high frequency noise into pulse excitation for low bit rate CELP |
| PCT/US2001/046778 WO2002054380A2 (en) | 2001-01-05 | 2001-12-10 | Injection high frequency noise into pulse excitation for low bit rate celp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE555471T1 true ATE555471T1 (de) | 2012-05-15 |
Family
ID=25039175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT01995389T ATE555471T1 (de) | 2001-01-05 | 2001-12-10 | Injektions-hochfrequenzrauschen in impulserregung für celp mit niedriger bitrate |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6529867B2 (de) |
| EP (2) | EP1348214B1 (de) |
| KR (1) | KR100540707B1 (de) |
| CN (2) | CN101281751B (de) |
| AT (1) | ATE555471T1 (de) |
| AU (1) | AU2002225953A1 (de) |
| WO (1) | WO2002054380A2 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3582589B2 (ja) * | 2001-03-07 | 2004-10-27 | 日本電気株式会社 | 音声符号化装置及び音声復号化装置 |
| KR100707173B1 (ko) * | 2004-12-21 | 2007-04-13 | 삼성전자주식회사 | 저비트율 부호화/복호화방법 및 장치 |
| CN104584123B (zh) * | 2012-08-29 | 2018-02-13 | 日本电信电话株式会社 | 解码方法、以及解码装置 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5699477A (en) * | 1994-11-09 | 1997-12-16 | Texas Instruments Incorporated | Mixed excitation linear prediction with fractional pitch |
| SE506379C3 (sv) * | 1995-03-22 | 1998-01-19 | Ericsson Telefon Ab L M | Lpc-talkodare med kombinerad excitation |
| US5692102A (en) * | 1995-10-26 | 1997-11-25 | Motorola, Inc. | Method device and system for an efficient noise injection process for low bitrate audio compression |
| TW416044B (en) * | 1996-06-19 | 2000-12-21 | Texas Instruments Inc | Adaptive filter and filtering method for low bit rate coding |
| US6134518A (en) * | 1997-03-04 | 2000-10-17 | International Business Machines Corporation | Digital audio signal coding using a CELP coder and a transform coder |
| US6029125A (en) * | 1997-09-02 | 2000-02-22 | Telefonaktiebolaget L M Ericsson, (Publ) | Reducing sparseness in coded speech signals |
| US6173257B1 (en) * | 1998-08-24 | 2001-01-09 | Conexant Systems, Inc | Completed fixed codebook for speech encoder |
| US6240386B1 (en) * | 1998-08-24 | 2001-05-29 | Conexant Systems, Inc. | Speech codec employing noise classification for noise compensation |
-
2001
- 2001-01-05 US US09/755,441 patent/US6529867B2/en not_active Expired - Lifetime
- 2001-12-10 KR KR1020037008926A patent/KR100540707B1/ko not_active Expired - Fee Related
- 2001-12-10 CN CN2008100947326A patent/CN101281751B/zh not_active Expired - Fee Related
- 2001-12-10 WO PCT/US2001/046778 patent/WO2002054380A2/en not_active Ceased
- 2001-12-10 EP EP01995389A patent/EP1348214B1/de not_active Expired - Lifetime
- 2001-12-10 AT AT01995389T patent/ATE555471T1/de active
- 2001-12-10 AU AU2002225953A patent/AU2002225953A1/en not_active Abandoned
- 2001-12-10 CN CNB018217346A patent/CN100399420C/zh not_active Expired - Fee Related
- 2001-12-10 EP EP07122413A patent/EP1892701A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002054380A2 (en) | 2002-07-11 |
| EP1348214B1 (de) | 2012-04-25 |
| US6529867B2 (en) | 2003-03-04 |
| AU2002225953A1 (en) | 2002-07-16 |
| US20020128828A1 (en) | 2002-09-12 |
| CN101281751B (zh) | 2012-09-12 |
| CN101281751A (zh) | 2008-10-08 |
| EP1892701A1 (de) | 2008-02-27 |
| EP1348214A4 (de) | 2005-08-17 |
| CN100399420C (zh) | 2008-07-02 |
| CN1531723A (zh) | 2004-09-22 |
| EP1348214A2 (de) | 2003-10-01 |
| WO2002054380A3 (en) | 2002-11-07 |
| KR100540707B1 (ko) | 2006-01-11 |
| WO2002054380B1 (en) | 2003-03-27 |
| KR20030076596A (ko) | 2003-09-26 |
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