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DE60214627D1 - Verfahren und Vorrichtung zur Bitratenkonversion - Google Patents

Verfahren und Vorrichtung zur Bitratenkonversion

Info

Publication number
DE60214627D1
DE60214627D1 DE60214627T DE60214627T DE60214627D1 DE 60214627 D1 DE60214627 D1 DE 60214627D1 DE 60214627 T DE60214627 T DE 60214627T DE 60214627 T DE60214627 T DE 60214627T DE 60214627 D1 DE60214627 D1 DE 60214627D1
Authority
DE
Germany
Prior art keywords
bit rate
rate conversion
conversion
bit
rate
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
Application number
DE60214627T
Other languages
English (en)
Other versions
DE60214627T2 (de
Inventor
Yuichiro Takamizawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE60214627D1 publication Critical patent/DE60214627D1/de
Publication of DE60214627T2 publication Critical patent/DE60214627T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G10L19/16—Vocoder architecture
    • G10L19/173—Transcoding, i.e. converting between two coded representations avoiding cascaded coding-decoding

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)
DE2002614627 2001-07-04 2002-07-03 Verfahren und Vorrichtung zur Bitratenkonversion Expired - Lifetime DE60214627T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001203246 2001-07-04
JP2001203246A JP4063508B2 (ja) 2001-07-04 2001-07-04 ビットレート変換装置およびビットレート変換方法

Publications (2)

Publication Number Publication Date
DE60214627D1 true DE60214627D1 (de) 2006-10-26
DE60214627T2 DE60214627T2 (de) 2007-01-04

Family

ID=19039915

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2002614627 Expired - Lifetime DE60214627T2 (de) 2001-07-04 2002-07-03 Verfahren und Vorrichtung zur Bitratenkonversion

Country Status (4)

Country Link
US (1) US8032367B2 (de)
EP (1) EP1274070B1 (de)
JP (1) JP4063508B2 (de)
DE (1) DE60214627T2 (de)

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US7689052B2 (en) * 2005-10-07 2010-03-30 Microsoft Corporation Multimedia signal processing using fixed-point approximations of linear transforms
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US8032369B2 (en) * 2006-01-20 2011-10-04 Qualcomm Incorporated Arbitrary average data rates for variable rate coders
US8090573B2 (en) * 2006-01-20 2012-01-03 Qualcomm Incorporated Selection of encoding modes and/or encoding rates for speech compression with open loop re-decision
US8346544B2 (en) * 2006-01-20 2013-01-01 Qualcomm Incorporated Selection of encoding modes and/or encoding rates for speech compression with closed loop re-decision
EP1855271A1 (de) * 2006-05-12 2007-11-14 Deutsche Thomson-Brandt Gmbh Verfahren und Vorrichtung zur Wiederkodierung von Signalen
US8942289B2 (en) * 2007-02-21 2015-01-27 Microsoft Corporation Computational complexity and precision control in transform-based digital media codec
JP5019437B2 (ja) * 2007-02-22 2012-09-05 Ｋｄｄｉ株式会社 オーディオビットレート変換方法および装置
US8726125B1 (en) * 2007-06-06 2014-05-13 Nvidia Corporation Reducing interpolation error
US8725504B1 (en) 2007-06-06 2014-05-13 Nvidia Corporation Inverse quantization in audio decoding
JP2009086661A (ja) * 2007-09-12 2009-04-23 Kawai Musical Instr Mfg Co Ltd 楽音波形の情報圧縮方法、情報伸長方法、情報圧縮のためのコンピュータプログラム、情報圧縮装置、情報伸長装置及びデータ構造
US8934539B2 (en) 2007-12-03 2015-01-13 Nvidia Corporation Vector processor acceleration for media quantization
US10491649B2 (en) * 2016-04-12 2019-11-26 Harmonic, Inc. Statistical multiplexing using a plurality of encoders operating upon different sets of unique and shared digital content
US11095896B2 (en) * 2017-10-12 2021-08-17 Qualcomm Incorporated Video coding with content adaptive spatially varying quantization
US11538489B2 (en) 2019-06-24 2022-12-27 Qualcomm Incorporated Correlating scene-based audio data for psychoacoustic audio coding
US11361776B2 (en) * 2019-06-24 2022-06-14 Qualcomm Incorporated Coding scaled spatial components

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JP2000333176A (ja) 1999-05-24 2000-11-30 Media Glue Corp スケーラビリティを有する画像符号伝送装置および方法並びに再量子化方法
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US6404364B1 (en) * 2000-08-24 2002-06-11 Agere Systems Guardian Corp. Multistage converter employing digital dither
US6763067B2 (en) * 2000-10-10 2004-07-13 Sarnoff Corporation Rate control for bitstream re-encoding
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US6757648B2 (en) * 2001-06-28 2004-06-29 Microsoft Corporation Techniques for quantization of spectral data in transcoding
US7110942B2 (en) * 2001-08-14 2006-09-19 Broadcom Corporation Efficient excitation quantization in a noise feedback coding system using correlation techniques

Also Published As

Publication number Publication date
US20030006916A1 (en) 2003-01-09
DE60214627T2 (de) 2007-01-04
EP1274070B1 (de) 2006-09-13
EP1274070A2 (de) 2003-01-08
JP2003015694A (ja) 2003-01-17
JP4063508B2 (ja) 2008-03-19
US8032367B2 (en) 2011-10-04
EP1274070A3 (de) 2004-03-17

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