CN1132155C - 确定语音编码参数的方法和设备 - Google Patents
确定语音编码参数的方法和设备 Download PDFInfo
- Publication number
- CN1132155C CN1132155C CN008026408A CN00802640A CN1132155C CN 1132155 C CN1132155 C CN 1132155C CN 008026408 A CN008026408 A CN 008026408A CN 00802640 A CN00802640 A CN 00802640A CN 1132155 C CN1132155 C CN 1132155C
- Authority
- CN
- China
- Prior art keywords
- frame
- slope
- noise
- noise reduction
- sample
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000009467 reduction Effects 0.000 claims abstract description 64
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 230000006870 function Effects 0.000 description 21
- 238000007792 addition Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 230000014509 gene expression Effects 0.000 description 5
- 238000010295 mobile communication Methods 0.000 description 4
- 230000002301 combined effect Effects 0.000 description 3
- 238000009432 framing Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
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
- G10L19/26—Pre-filtering or post-filtering
- G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
-
- 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
- G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
- G10L19/025—Detection of transients or attacks for time/frequency resolution switching
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)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Devices For Executing Special Programs (AREA)
Abstract
Description
Claims (13)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI990033A FI114833B (fi) | 1999-01-08 | 1999-01-08 | Menetelmä, puhekooderi ja matkaviestin puheenkoodauskehysten muodostamiseksi |
FI990033 | 1999-01-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1337042A CN1337042A (zh) | 2002-02-20 |
CN1132155C true CN1132155C (zh) | 2003-12-24 |
Family
ID=8553299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN008026408A Expired - Lifetime CN1132155C (zh) | 1999-01-08 | 2000-01-04 | 确定语音编码参数的方法和设备 |
Country Status (11)
Country | Link |
---|---|
US (1) | US6587817B1 (zh) |
EP (1) | EP1145221B1 (zh) |
JP (1) | JP4545941B2 (zh) |
CN (1) | CN1132155C (zh) |
AT (1) | ATE360249T1 (zh) |
AU (1) | AU2112700A (zh) |
DE (1) | DE60034429T2 (zh) |
ES (1) | ES2284473T3 (zh) |
FI (1) | FI114833B (zh) |
HK (1) | HK1042578B (zh) |
WO (1) | WO2000041163A2 (zh) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100452109B1 (ko) * | 2002-10-07 | 2004-10-12 | 주식회사 아큐죤 | 음성신호 추적장치 및 그 방법 |
EP1626504A1 (en) * | 2003-05-21 | 2006-02-15 | Sony Corporation | Data processing device, encoding device, encoding method, decoding device, decoding method, and program |
FR2875633A1 (fr) * | 2004-09-17 | 2006-03-24 | France Telecom | Procede et dispositif d'evaluation de l'efficacite d'une fonction de reduction de bruit destinee a etre appliquee a des signaux audio |
FR2882458A1 (fr) * | 2005-02-18 | 2006-08-25 | France Telecom | Procede de mesure de la gene due au bruit dans un signal audio |
USRE50009E1 (en) * | 2006-10-25 | 2024-06-11 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for generating audio subband values and apparatus and method for generating time-domain audio samples |
KR101111520B1 (ko) | 2006-12-07 | 2012-05-24 | 엘지전자 주식회사 | 오디오 처리 방법 및 장치 |
GB2466671B (en) | 2009-01-06 | 2013-03-27 | Skype | Speech encoding |
GB2466670B (en) | 2009-01-06 | 2012-11-14 | Skype | Speech encoding |
GB2466673B (en) | 2009-01-06 | 2012-11-07 | Skype | Quantization |
GB2466675B (en) | 2009-01-06 | 2013-03-06 | Skype | Speech coding |
US8452606B2 (en) | 2009-09-29 | 2013-05-28 | Skype | Speech encoding using multiple bit rates |
BR112012029132B1 (pt) | 2011-02-14 | 2021-10-05 | Fraunhofer - Gesellschaft Zur Förderung Der Angewandten Forschung E.V | Representação de sinal de informações utilizando transformada sobreposta |
MY164797A (en) | 2011-02-14 | 2018-01-30 | Fraunhofer Ges Zur Foederung Der Angewandten Forschung E V | Apparatus and method for processing a decoded audio signal in a spectral domain |
PT2676267T (pt) | 2011-02-14 | 2017-09-26 | Fraunhofer Ges Forschung | Codificação e descodificação de posições de pulso de faixas de um sinal de áudio |
CN103620672B (zh) | 2011-02-14 | 2016-04-27 | 弗劳恩霍夫应用研究促进协会 | 用于低延迟联合语音及音频编码(usac)中的错误隐藏的装置和方法 |
EP2676266B1 (en) | 2011-02-14 | 2015-03-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Linear prediction based coding scheme using spectral domain noise shaping |
AU2012217216B2 (en) | 2011-02-14 | 2015-09-17 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for coding a portion of an audio signal using a transient detection and a quality result |
EP4243017A3 (en) * | 2011-02-14 | 2023-11-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method decoding an audio signal using an aligned look-ahead portion |
CN111415674A (zh) * | 2020-05-07 | 2020-07-14 | 北京声智科技有限公司 | 语音降噪方法及电子设备 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5774846A (en) * | 1994-12-19 | 1998-06-30 | Matsushita Electric Industrial Co., Ltd. | Speech coding apparatus, linear prediction coefficient analyzing apparatus and noise reducing apparatus |
US5732389A (en) * | 1995-06-07 | 1998-03-24 | Lucent Technologies Inc. | Voiced/unvoiced classification of speech for excitation codebook selection in celp speech decoding during frame erasures |
FI100840B (fi) * | 1995-12-12 | 1998-02-27 | Nokia Mobile Phones Ltd | Kohinanvaimennin ja menetelmä taustakohinan vaimentamiseksi kohinaises ta puheesta sekä matkaviestin |
GB2326572A (en) * | 1997-06-19 | 1998-12-23 | Softsound Limited | Low bit rate audio coder and decoder |
-
1999
- 1999-01-08 FI FI990033A patent/FI114833B/fi not_active IP Right Cessation
-
2000
- 2000-01-04 EP EP00901158A patent/EP1145221B1/en not_active Expired - Lifetime
- 2000-01-04 AU AU21127/00A patent/AU2112700A/en not_active Abandoned
- 2000-01-04 WO PCT/FI2000/000006 patent/WO2000041163A2/en active IP Right Grant
- 2000-01-04 AT AT00901158T patent/ATE360249T1/de active
- 2000-01-04 DE DE60034429T patent/DE60034429T2/de not_active Expired - Lifetime
- 2000-01-04 ES ES00901158T patent/ES2284473T3/es not_active Expired - Lifetime
- 2000-01-04 JP JP2000592817A patent/JP4545941B2/ja not_active Expired - Lifetime
- 2000-01-04 CN CN008026408A patent/CN1132155C/zh not_active Expired - Lifetime
- 2000-01-07 US US09/478,877 patent/US6587817B1/en not_active Expired - Lifetime
-
2002
- 2002-06-07 HK HK02104319.4A patent/HK1042578B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2000041163A3 (en) | 2005-03-10 |
FI990033A0 (fi) | 1999-01-08 |
ATE360249T1 (de) | 2007-05-15 |
WO2000041163A2 (en) | 2000-07-13 |
AU2112700A (en) | 2000-07-24 |
JP4545941B2 (ja) | 2010-09-15 |
US6587817B1 (en) | 2003-07-01 |
EP1145221B1 (en) | 2007-04-18 |
FI990033A (fi) | 2000-07-09 |
DE60034429T2 (de) | 2008-01-03 |
EP1145221A2 (en) | 2001-10-17 |
DE60034429D1 (de) | 2007-05-31 |
HK1042578A1 (en) | 2002-08-16 |
EP1145221A3 (en) | 2005-04-27 |
JP2004513381A (ja) | 2004-04-30 |
ES2284473T3 (es) | 2007-11-16 |
HK1042578B (zh) | 2005-03-04 |
CN1337042A (zh) | 2002-02-20 |
FI114833B (fi) | 2004-12-31 |
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Effective date of registration: 20181009 Address after: Espoo, Finland Patentee after: NOKIA TECHNOLOGIES OY Address before: Espoo, Finland Patentee before: NOKIA Corp. Effective date of registration: 20181009 Address after: Espoo, Finland Patentee after: NOKIA Corp. Address before: Espoo, Finland Patentee before: Nokia Mobile Phones Ltd. |
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Granted publication date: 20031224 |