CN1748248A - 用于编码和低复杂性代码转换的频谱分量转换 - Google Patents
用于编码和低复杂性代码转换的频谱分量转换 Download PDFInfo
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- CN1748248A CN1748248A CNA2004800036667A CN200480003666A CN1748248A CN 1748248 A CN1748248 A CN 1748248A CN A2004800036667 A CNA2004800036667 A CN A2004800036667A CN 200480003666 A CN200480003666 A CN 200480003666A CN 1748248 A CN1748248 A CN 1748248A
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- 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
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- 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
- G10L19/173—Transcoding, i.e. converting between two coded representations avoiding cascaded coding-decoding
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Acoustics & Sound (AREA)
- Computational Linguistics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
- Electrophonic Musical Instruments (AREA)
- Stereophonic System (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Abstract
Description
尾数(m) | 指数(x) | 表示 |
0.0010110120.010110120.10110121.011012 | 0123 | 0.001011012×20=0.17578125×1=0.175781250.01011012×2-1=0.3515625×0.5=0.175781250.1011012×2-2=0.703125×0.25=0.175781251.011012×2-3=1.40625×0.125=0.17578125 |
Claims (54)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US44593103P | 2003-02-06 | 2003-02-06 | |
US60/445,931 | 2003-02-06 | ||
US10/458,798 | 2003-06-09 | ||
US10/458,798 US7318027B2 (en) | 2003-02-06 | 2003-06-09 | Conversion of synthesized spectral components for encoding and low-complexity transcoding |
PCT/US2004/002605 WO2004072957A2 (en) | 2003-02-06 | 2004-01-30 | Conversion of spectral components for encoding and low-complexity transcoding |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200910164435.9A Division CN101661750B (zh) | 2003-02-06 | 2004-01-30 | 用于编码和低复杂性代码转换的频谱分量转换 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1748248A true CN1748248A (zh) | 2006-03-15 |
CN100589181C CN100589181C (zh) | 2010-02-10 |
Family
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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CN200910164435.9A Expired - Lifetime CN101661750B (zh) | 2003-02-06 | 2004-01-30 | 用于编码和低复杂性代码转换的频谱分量转换 |
CN200480003666A Expired - Lifetime CN100589181C (zh) | 2003-02-06 | 2004-01-30 | 用于编码和低复杂性代码转换的频谱分量转换 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200910164435.9A Expired - Lifetime CN101661750B (zh) | 2003-02-06 | 2004-01-30 | 用于编码和低复杂性代码转换的频谱分量转换 |
Country Status (20)
Country | Link |
---|---|
US (1) | US7318027B2 (zh) |
EP (3) | EP1852852B1 (zh) |
JP (2) | JP4673834B2 (zh) |
KR (1) | KR100992081B1 (zh) |
CN (2) | CN101661750B (zh) |
AT (2) | ATE448540T1 (zh) |
AU (1) | AU2004211163B2 (zh) |
CA (2) | CA2776988C (zh) |
CY (1) | CY1114289T1 (zh) |
DE (2) | DE602004024139D1 (zh) |
DK (1) | DK1590801T3 (zh) |
ES (2) | ES2297376T3 (zh) |
HK (2) | HK1080596B (zh) |
IL (1) | IL169442A (zh) |
MX (1) | MXPA05008318A (zh) |
MY (1) | MY142955A (zh) |
PL (2) | PL378175A1 (zh) |
SG (1) | SG144743A1 (zh) |
TW (2) | TWI352973B (zh) |
WO (1) | WO2004072957A2 (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101136200B (zh) * | 2006-08-30 | 2011-04-20 | 财团法人工业技术研究院 | 音频信号转换编码方法与系统 |
CN104781878A (zh) * | 2012-11-07 | 2015-07-15 | 杜比国际公司 | 复杂度降低的转换器snr计算 |
CN111933160A (zh) * | 2017-11-10 | 2020-11-13 | 弗劳恩霍夫应用研究促进协会 | 调适最低有效比特的编码与解码的音频编码器、音频解码器、方法及计算机程序 |
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EP1719117A1 (en) * | 2004-02-16 | 2006-11-08 | Koninklijke Philips Electronics N.V. | A transcoder and method of transcoding therefore |
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US7406412B2 (en) * | 2004-04-20 | 2008-07-29 | Dolby Laboratories Licensing Corporation | Reduced computational complexity of bit allocation for perceptual coding |
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CN101080931B (zh) * | 2004-12-14 | 2010-06-16 | 三星电子株式会社 | 用于对图像编码和解码的设备及其方法 |
EP1855271A1 (en) * | 2006-05-12 | 2007-11-14 | Deutsche Thomson-Brandt Gmbh | Method and apparatus for re-encoding signals |
US7725311B2 (en) * | 2006-09-28 | 2010-05-25 | Ericsson Ab | Method and apparatus for rate reduction of coded voice traffic |
US8036903B2 (en) | 2006-10-18 | 2011-10-11 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Analysis filterbank, synthesis filterbank, encoder, de-coder, mixer and conferencing system |
US20080097757A1 (en) * | 2006-10-24 | 2008-04-24 | Nokia Corporation | Audio coding |
DE102006051673A1 (de) * | 2006-11-02 | 2008-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Nachbearbeiten von Spektralwerten und Encodierer und Decodierer für Audiosignale |
US8086465B2 (en) * | 2007-03-20 | 2011-12-27 | Microsoft Corporation | Transform domain transcoding and decoding of audio data using integer-reversible modulated lapped transforms |
US7991622B2 (en) * | 2007-03-20 | 2011-08-02 | Microsoft Corporation | Audio compression and decompression using integer-reversible modulated lapped transforms |
KR101403340B1 (ko) | 2007-08-02 | 2014-06-09 | 삼성전자주식회사 | 변환 부호화 방법 및 장치 |
US8457958B2 (en) * | 2007-11-09 | 2013-06-04 | Microsoft Corporation | Audio transcoder using encoder-generated side information to transcode to target bit-rate |
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2003
- 2003-06-09 US US10/458,798 patent/US7318027B2/en active Active
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- 2004-01-15 TW TW099129455A patent/TWI352973B/zh not_active IP Right Cessation
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101136200B (zh) * | 2006-08-30 | 2011-04-20 | 财团法人工业技术研究院 | 音频信号转换编码方法与系统 |
CN104781878A (zh) * | 2012-11-07 | 2015-07-15 | 杜比国际公司 | 复杂度降低的转换器snr计算 |
CN104781878B (zh) * | 2012-11-07 | 2018-03-02 | 杜比国际公司 | 音频编码器和方法、音频转码器和方法、以及转换方法 |
CN111933160A (zh) * | 2017-11-10 | 2020-11-13 | 弗劳恩霍夫应用研究促进协会 | 调适最低有效比特的编码与解码的音频编码器、音频解码器、方法及计算机程序 |
CN111933160B (zh) * | 2017-11-10 | 2024-02-13 | 弗劳恩霍夫应用研究促进协会 | 调适最低有效比特的编码与解码的音频编码器、音频解码器、方法及计算机程序 |
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