CN101308655A - 一种音频编解码方法与装置 - Google Patents
一种音频编解码方法与装置 Download PDFInfo
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- CN101308655A CN101308655A CNA2007100407107A CN200710040710A CN101308655A CN 101308655 A CN101308655 A CN 101308655A CN A2007100407107 A CNA2007100407107 A CN A2007100407107A CN 200710040710 A CN200710040710 A CN 200710040710A CN 101308655 A CN101308655 A CN 101308655A
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- incoming frame
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- audio coding
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
Abstract
Description
自变量BR(指一个声道的比特率) | 函数值r |
BR<35k | 15.0 |
35k≤BR<37.5k | 10.0 |
37.5k≤BR<40k | 8.5 |
40k≤BR<42.5k | 7.0 |
42.5k≤BR<45k | 6.0 |
45k≤BR<47.5k | 4.8 |
47.5k≤BR<50k | 3.9 |
50k≤BR<52.5k | 3.6 |
52.5k≤BR<55k | 3.4 |
55k≤BR<57.5k | 2.2 |
57.5k≤BR<60k | 1.5 |
60k≤BR<62.5k | 1.2 |
BR≥62.5k | 1.1 |
Claims (32)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007100407107A CN101308655B (zh) | 2007-05-16 | 2007-05-16 | 一种音频编解码方法与装置 |
PCT/CN2008/070987 WO2008138276A1 (fr) | 2007-05-16 | 2008-05-16 | Dispositif et procédé de codage et de décodage d'audiofréquence |
US12/615,965 US8463614B2 (en) | 2007-05-16 | 2009-11-10 | Audio encoding/decoding for reducing pre-echo of a transient as a function of bit rate |
Applications Claiming Priority (1)
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CN2007100407107A CN101308655B (zh) | 2007-05-16 | 2007-05-16 | 一种音频编解码方法与装置 |
Publications (2)
Publication Number | Publication Date |
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CN101308655A true CN101308655A (zh) | 2008-11-19 |
CN101308655B CN101308655B (zh) | 2011-07-06 |
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CN2007100407107A Active CN101308655B (zh) | 2007-05-16 | 2007-05-16 | 一种音频编解码方法与装置 |
Country Status (3)
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US (1) | US8463614B2 (zh) |
CN (1) | CN101308655B (zh) |
WO (1) | WO2008138276A1 (zh) |
Cited By (6)
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WO2010078816A1 (zh) * | 2008-12-29 | 2010-07-15 | 华为技术有限公司 | 瞬态信号的编码方法和装置、解码方法和装置及处理系统 |
CN101908342A (zh) * | 2010-07-23 | 2010-12-08 | 北京理工大学 | 利用频域滤波后处理进行音频暂态信号预回声抑制的方法 |
CN102341847A (zh) * | 2009-01-30 | 2012-02-01 | 弗劳恩霍夫应用研究促进协会 | 用于操纵包括暂态事件的音频信号的装置、方法和计算机程序 |
CN102446508A (zh) * | 2010-10-11 | 2012-05-09 | 华为技术有限公司 | 语音音频统一编码窗型选择方法及装置 |
CN101826327B (zh) * | 2009-03-03 | 2013-06-05 | 中兴通讯股份有限公司 | 一种基于时域掩蔽的瞬态判决方法及设备 |
CN110310652A (zh) * | 2018-03-25 | 2019-10-08 | 深圳市麦吉通科技有限公司 | 混响抑制方法、音频处理装置及计算机可读存储介质 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2477188A1 (en) * | 2011-01-18 | 2012-07-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Encoding and decoding of slot positions of events in an audio signal frame |
US11640826B2 (en) * | 2018-04-12 | 2023-05-02 | Rft Arastirma Sanayi Ve Ticaret Anonim Sirketi | Real time digital voice communication method |
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JP3307138B2 (ja) * | 1995-02-27 | 2002-07-24 | ソニー株式会社 | 信号符号化方法及び装置、並びに信号復号化方法及び装置 |
US5886276A (en) * | 1997-01-16 | 1999-03-23 | The Board Of Trustees Of The Leland Stanford Junior University | System and method for multiresolution scalable audio signal encoding |
DE19736669C1 (de) * | 1997-08-22 | 1998-10-22 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zum Erfassen eines Anschlags in einem zeitdiskreten Audiosignal sowie Vorrichtung und Verfahren zum Codieren eines Audiosignals |
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CN1312662C (zh) * | 2001-05-10 | 2007-04-25 | 杜比实验室特许公司 | 通过降低前噪声改善音频编码系统的瞬时性能的方法 |
US6732071B2 (en) * | 2001-09-27 | 2004-05-04 | Intel Corporation | Method, apparatus, and system for efficient rate control in audio encoding |
US7353168B2 (en) * | 2001-10-03 | 2008-04-01 | Broadcom Corporation | Method and apparatus to eliminate discontinuities in adaptively filtered signals |
AU2002307884A1 (en) * | 2002-04-22 | 2003-11-03 | Nokia Corporation | Method and device for obtaining parameters for parametric speech coding of frames |
TW594674B (en) * | 2003-03-14 | 2004-06-21 | Mediatek Inc | Encoder and a encoding method capable of detecting audio signal transient |
CN100339886C (zh) * | 2003-04-10 | 2007-09-26 | 联发科技股份有限公司 | 可以检测声音信号的暂态位置的编码器及编码方法 |
US20040230425A1 (en) * | 2003-05-16 | 2004-11-18 | Divio, Inc. | Rate control for coding audio frames |
US7353169B1 (en) * | 2003-06-24 | 2008-04-01 | Creative Technology Ltd. | Transient detection and modification in audio signals |
US7469209B2 (en) * | 2003-08-14 | 2008-12-23 | Dilithium Networks Pty Ltd. | Method and apparatus for frame classification and rate determination in voice transcoders for telecommunications |
US20070067166A1 (en) * | 2003-09-17 | 2007-03-22 | Xingde Pan | Method and device of multi-resolution vector quantilization for audio encoding and decoding |
WO2005031704A1 (en) | 2003-09-29 | 2005-04-07 | Koninklijke Philips Electronics N.V. | Encoding audio signals |
KR20050087956A (ko) * | 2004-02-27 | 2005-09-01 | 삼성전자주식회사 | 무손실 오디오 부호화/복호화 방법 및 장치 |
DE102004009955B3 (de) * | 2004-03-01 | 2005-08-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Ermitteln einer Quantisierer-Schrittweite |
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JP4744438B2 (ja) * | 2004-03-05 | 2011-08-10 | パナソニック株式会社 | エラー隠蔽装置およびエラー隠蔽方法 |
KR100668319B1 (ko) | 2004-12-07 | 2007-01-12 | 삼성전자주식회사 | 오디오 신호의 변환방법 및 장치와 오디오 신호에적응적인 부호화방법 및 장치, 오디오 신호의 역변환 방법및 장치와 오디오 신호에 적응적인 복호화 방법 및 장치 |
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CN101149921B (zh) * | 2006-09-21 | 2011-08-10 | 展讯通信(上海)有限公司 | 一种静音检测方法和装置 |
CN101266797B (zh) * | 2007-03-16 | 2011-06-01 | 展讯通信(上海)有限公司 | 语音信号后处理滤波方法 |
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2007
- 2007-05-16 CN CN2007100407107A patent/CN101308655B/zh active Active
-
2008
- 2008-05-16 WO PCT/CN2008/070987 patent/WO2008138276A1/zh active Application Filing
-
2009
- 2009-11-10 US US12/615,965 patent/US8463614B2/en active Active
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010078816A1 (zh) * | 2008-12-29 | 2010-07-15 | 华为技术有限公司 | 瞬态信号的编码方法和装置、解码方法和装置及处理系统 |
CN101770776B (zh) * | 2008-12-29 | 2011-06-08 | 华为技术有限公司 | 瞬态信号的编码方法和装置、解码方法和装置及处理系统 |
US8063809B2 (en) | 2008-12-29 | 2011-11-22 | Huawei Technologies Co., Ltd. | Transient signal encoding method and device, decoding method and device, and processing system |
CN102341847A (zh) * | 2009-01-30 | 2012-02-01 | 弗劳恩霍夫应用研究促进协会 | 用于操纵包括暂态事件的音频信号的装置、方法和计算机程序 |
CN102341847B (zh) * | 2009-01-30 | 2014-01-08 | 弗劳恩霍夫应用研究促进协会 | 用于操纵包括暂态事件的音频信号的装置和方法 |
CN101826327B (zh) * | 2009-03-03 | 2013-06-05 | 中兴通讯股份有限公司 | 一种基于时域掩蔽的瞬态判决方法及设备 |
CN101908342A (zh) * | 2010-07-23 | 2010-12-08 | 北京理工大学 | 利用频域滤波后处理进行音频暂态信号预回声抑制的方法 |
CN101908342B (zh) * | 2010-07-23 | 2012-09-26 | 北京理工大学 | 利用频域滤波后处理进行音频暂态信号预回声抑制的方法 |
CN102446508A (zh) * | 2010-10-11 | 2012-05-09 | 华为技术有限公司 | 语音音频统一编码窗型选择方法及装置 |
CN110310652A (zh) * | 2018-03-25 | 2019-10-08 | 深圳市麦吉通科技有限公司 | 混响抑制方法、音频处理装置及计算机可读存储介质 |
Also Published As
Publication number | Publication date |
---|---|
US8463614B2 (en) | 2013-06-11 |
WO2008138276A1 (fr) | 2008-11-20 |
US20100121648A1 (en) | 2010-05-13 |
CN101308655B (zh) | 2011-07-06 |
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Effective date of registration: 20190314 Address after: 101399 Building 8-07, Ronghui Garden 6, Shunyi Airport Economic Core Area, Beijing Patentee after: Xin Xin finance leasing (Beijing) Co.,Ltd. Address before: 201203 Shanghai city Zuchongzhi road Pudong Zhangjiang hi tech park, Spreadtrum Center Building 1, Lane 2288 Patentee before: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. |
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Application publication date: 20081119 Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Assignor: Xin Xin finance leasing (Beijing) Co.,Ltd. Contract record no.: X2021110000008 Denomination of invention: An audio codec method and device Granted publication date: 20110706 License type: Exclusive License Record date: 20210317 |
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Effective date of registration: 20221014 Address after: 201203 Shanghai city Zuchongzhi road Pudong New Area Zhangjiang hi tech park, Spreadtrum Center Building 1, Lane 2288 Patentee after: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Address before: 101399 Building 8-07, Ronghui Garden 6, Shunyi Airport Economic Core Area, Beijing Patentee before: Xin Xin finance leasing (Beijing) Co.,Ltd. |