WO2000016313A1 - Speech coding with background noise reproduction - Google Patents
Speech coding with background noise reproduction Download PDFInfo
- Publication number
- WO2000016313A1 WO2000016313A1 PCT/SE1999/001582 SE9901582W WO0016313A1 WO 2000016313 A1 WO2000016313 A1 WO 2000016313A1 SE 9901582 W SE9901582 W SE 9901582W WO 0016313 A1 WO0016313 A1 WO 0016313A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- parameter
- current
- parameters
- speech signal
- original speech
- Prior art date
Links
- 239000003607 modifier Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 238000012935 Averaging Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 10
- 238000003786 synthesis reaction Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000001413 cellular effect Effects 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 description 23
- 238000009499 grossing Methods 0.000 description 12
- 238000001228 spectrum Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000001755 vocal effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 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
- G10L19/08—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
- G10L19/012—Comfort noise or silence 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
- 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
- G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
Definitions
- FIGURE 1 illustrates pertinent portions of a conventional linear predictive speech decoder.
- FIGURE 2 illustrates pertinent portions of a linear predictive speech decoder according to the present invention.
- OtherPar(i) include the aforementioned LSF representation of the STP parameters.
- modifier 21 can compute a time averaged version of the conventional received energy parameters EnPar(i) of FIGURE 2.
- the time averaged version can be calculated, for example, as follows;
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)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69935233T DE69935233T2 (en) | 1998-09-16 | 1999-09-10 | VOICE CODING |
AU63774/99A AU6377499A (en) | 1998-09-16 | 1999-09-10 | Speech coding with background noise reproduction |
EP99951312A EP1112568B1 (en) | 1998-09-16 | 1999-09-10 | Speech coding |
CA2340160A CA2340160C (en) | 1998-09-16 | 1999-09-10 | Speech coding with improved background noise reproduction |
BR9913754-2A BR9913754A (en) | 1998-09-16 | 1999-09-10 | Process for producing an approximation of an original conversation signal from encoded information about the original conversion signal, and conversation decoding devices, and transceiver for use in a communication system |
JP2000570769A JP4309060B2 (en) | 1998-09-16 | 1999-09-10 | Speech coding with background noise regeneration. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/154,361 | 1998-09-16 | ||
US09/154,361 US6275798B1 (en) | 1998-09-16 | 1998-09-16 | Speech coding with improved background noise reproduction |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000016313A1 true WO2000016313A1 (en) | 2000-03-23 |
Family
ID=22551052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1999/001582 WO2000016313A1 (en) | 1998-09-16 | 1999-09-10 | Speech coding with background noise reproduction |
Country Status (15)
Country | Link |
---|---|
US (1) | US6275798B1 (en) |
EP (2) | EP1879176B1 (en) |
JP (1) | JP4309060B2 (en) |
KR (1) | KR100688069B1 (en) |
CN (1) | CN1244090C (en) |
AU (1) | AU6377499A (en) |
BR (1) | BR9913754A (en) |
CA (1) | CA2340160C (en) |
DE (2) | DE69942288D1 (en) |
HK (1) | HK1117629A1 (en) |
MY (1) | MY126550A (en) |
RU (1) | RU2001110168A (en) |
TW (1) | TW454167B (en) |
WO (1) | WO2000016313A1 (en) |
ZA (1) | ZA200101222B (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6453285B1 (en) * | 1998-08-21 | 2002-09-17 | Polycom, Inc. | Speech activity detector for use in noise reduction system, and methods therefor |
JP2000172283A (en) * | 1998-12-01 | 2000-06-23 | Nec Corp | System and method for detecting sound |
JP3451998B2 (en) * | 1999-05-31 | 2003-09-29 | 日本電気株式会社 | Speech encoding / decoding device including non-speech encoding, decoding method, and recording medium recording program |
JP4464707B2 (en) * | 2004-02-24 | 2010-05-19 | パナソニック株式会社 | Communication device |
US8566086B2 (en) * | 2005-06-28 | 2013-10-22 | Qnx Software Systems Limited | System for adaptive enhancement of speech signals |
EP3629328A1 (en) | 2007-03-05 | 2020-04-01 | Telefonaktiebolaget LM Ericsson (publ) | Method and arrangement for smoothing of stationary background noise |
PL2118889T3 (en) | 2007-03-05 | 2013-03-29 | Ericsson Telefon Ab L M | Method and controller for smoothing stationary background noise |
CN101320563B (en) * | 2007-06-05 | 2012-06-27 | 华为技术有限公司 | Background noise encoding/decoding device, method and communication equipment |
CN102667927B (en) * | 2009-10-19 | 2013-05-08 | 瑞典爱立信有限公司 | Method and background estimator for voice activity detection |
JP5840075B2 (en) * | 2012-06-01 | 2016-01-06 | 日本電信電話株式会社 | Speech waveform database generation apparatus, method, and program |
DE102017207943A1 (en) * | 2017-05-11 | 2018-11-15 | Robert Bosch Gmbh | Signal processing device for a usable in particular in a battery system communication system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4630305A (en) * | 1985-07-01 | 1986-12-16 | Motorola, Inc. | Automatic gain selector for a noise suppression system |
WO1996034382A1 (en) * | 1995-04-28 | 1996-10-31 | Northern Telecom Limited | Methods and apparatus for distinguishing speech intervals from noise intervals in audio signals |
EP0786760A2 (en) * | 1996-01-29 | 1997-07-30 | Texas Instruments Incorporated | Speech coding |
EP0843301A2 (en) * | 1996-11-15 | 1998-05-20 | Nokia Mobile Phones Ltd. | Methods for generating comfort noise during discontinous transmission |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4969192A (en) | 1987-04-06 | 1990-11-06 | Voicecraft, Inc. | Vector adaptive predictive coder for speech and audio |
IL84948A0 (en) * | 1987-12-25 | 1988-06-30 | D S P Group Israel Ltd | Noise reduction system |
US5179626A (en) * | 1988-04-08 | 1993-01-12 | At&T Bell Laboratories | Harmonic speech coding arrangement where a set of parameters for a continuous magnitude spectrum is determined by a speech analyzer and the parameters are used by a synthesizer to determine a spectrum which is used to determine senusoids for synthesis |
US5008941A (en) * | 1989-03-31 | 1991-04-16 | Kurzweil Applied Intelligence, Inc. | Method and apparatus for automatically updating estimates of undesirable components of the speech signal in a speech recognition system |
US5148489A (en) * | 1990-02-28 | 1992-09-15 | Sri International | Method for spectral estimation to improve noise robustness for speech recognition |
US5233660A (en) * | 1991-09-10 | 1993-08-03 | At&T Bell Laboratories | Method and apparatus for low-delay celp speech coding and decoding |
US5615298A (en) * | 1994-03-14 | 1997-03-25 | Lucent Technologies Inc. | Excitation signal synthesis during frame erasure or packet loss |
US5991725A (en) * | 1995-03-07 | 1999-11-23 | Advanced Micro Devices, Inc. | System and method for enhanced speech quality in voice storage and retrieval systems |
-
1998
- 1998-09-16 US US09/154,361 patent/US6275798B1/en not_active Expired - Lifetime
-
1999
- 1999-08-16 TW TW088113970A patent/TW454167B/en not_active IP Right Cessation
- 1999-08-25 MY MYPI99003657A patent/MY126550A/en unknown
- 1999-09-10 EP EP07002235A patent/EP1879176B1/en not_active Expired - Lifetime
- 1999-09-10 WO PCT/SE1999/001582 patent/WO2000016313A1/en active IP Right Grant
- 1999-09-10 JP JP2000570769A patent/JP4309060B2/en not_active Expired - Lifetime
- 1999-09-10 DE DE69942288T patent/DE69942288D1/en not_active Expired - Lifetime
- 1999-09-10 BR BR9913754-2A patent/BR9913754A/en not_active IP Right Cessation
- 1999-09-10 DE DE69935233T patent/DE69935233T2/en not_active Expired - Lifetime
- 1999-09-10 RU RU2001110168/09A patent/RU2001110168A/en not_active Application Discontinuation
- 1999-09-10 CN CNB998109444A patent/CN1244090C/en not_active Expired - Lifetime
- 1999-09-10 AU AU63774/99A patent/AU6377499A/en not_active Abandoned
- 1999-09-10 EP EP99951312A patent/EP1112568B1/en not_active Expired - Lifetime
- 1999-09-10 KR KR1020017002853A patent/KR100688069B1/en not_active IP Right Cessation
- 1999-09-10 CA CA2340160A patent/CA2340160C/en not_active Expired - Lifetime
-
2001
- 2001-02-13 ZA ZA200101222A patent/ZA200101222B/en unknown
-
2008
- 2008-07-16 HK HK08107885.5A patent/HK1117629A1/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4630305A (en) * | 1985-07-01 | 1986-12-16 | Motorola, Inc. | Automatic gain selector for a noise suppression system |
WO1996034382A1 (en) * | 1995-04-28 | 1996-10-31 | Northern Telecom Limited | Methods and apparatus for distinguishing speech intervals from noise intervals in audio signals |
EP0786760A2 (en) * | 1996-01-29 | 1997-07-30 | Texas Instruments Incorporated | Speech coding |
EP0843301A2 (en) * | 1996-11-15 | 1998-05-20 | Nokia Mobile Phones Ltd. | Methods for generating comfort noise during discontinous transmission |
Non-Patent Citations (1)
Title |
---|
SOHN ET AL.: "A voice activity detector employing soft decision based noise spectrum adaptation", PROCEEDINGS OF THE 1998 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, ICASSP '98, vol. 1, 12 May 1998 (1998-05-12) - 15 May 1998 (1998-05-15), SEATTLE, WA, US, pages 365 - 368, XP002085126 * |
Also Published As
Publication number | Publication date |
---|---|
DE69935233D1 (en) | 2007-04-05 |
JP2002525665A (en) | 2002-08-13 |
EP1112568A1 (en) | 2001-07-04 |
CN1318187A (en) | 2001-10-17 |
CA2340160C (en) | 2010-11-30 |
CA2340160A1 (en) | 2000-03-23 |
EP1879176B1 (en) | 2010-04-21 |
HK1117629A1 (en) | 2009-01-16 |
US6275798B1 (en) | 2001-08-14 |
BR9913754A (en) | 2001-06-12 |
MY126550A (en) | 2006-10-31 |
CN1244090C (en) | 2006-03-01 |
KR20010090438A (en) | 2001-10-18 |
KR100688069B1 (en) | 2007-02-28 |
TW454167B (en) | 2001-09-11 |
EP1112568B1 (en) | 2007-02-21 |
ZA200101222B (en) | 2001-08-16 |
AU6377499A (en) | 2000-04-03 |
JP4309060B2 (en) | 2009-08-05 |
EP1879176A2 (en) | 2008-01-16 |
EP1879176A3 (en) | 2008-09-10 |
RU2001110168A (en) | 2003-03-10 |
DE69942288D1 (en) | 2010-06-02 |
DE69935233T2 (en) | 2007-10-31 |
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