WO2008064577A8 - A method and an apparatus for adjusting quantization quality in encoder and decoder - Google Patents

A method and an apparatus for adjusting quantization quality in encoder and decoder Download PDF

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Publication number
WO2008064577A8
WO2008064577A8 PCT/CN2007/003799 CN2007003799W WO2008064577A8 WO 2008064577 A8 WO2008064577 A8 WO 2008064577A8 CN 2007003799 W CN2007003799 W CN 2007003799W WO 2008064577 A8 WO2008064577 A8 WO 2008064577A8
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WO
WIPO (PCT)
Prior art keywords
sample values
quantization quality
decoder
encoder
adjusting
Prior art date
Application number
PCT/CN2007/003799
Other languages
French (fr)
Chinese (zh)
Other versions
WO2008064577A1 (en
Inventor
Wei Li
Lijing Xu
Qing Zhang
Jianfeng Xu
Shenghu Sang
Zhengzhong Du
Yao Zou
Peilin Liu
Original Assignee
Huawei Tech Co Ltd
Wei Li
Lijing Xu
Qing Zhang
Jianfeng Xu
Shenghu Sang
Zhengzhong Du
Yao Zou
Peilin Liu
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 Huawei Tech Co Ltd, Wei Li, Lijing Xu, Qing Zhang, Jianfeng Xu, Shenghu Sang, Zhengzhong Du, Yao Zou, Peilin Liu filed Critical Huawei Tech Co Ltd
Priority to EP07855801A priority Critical patent/EP2104095A4/en
Publication of WO2008064577A1 publication Critical patent/WO2008064577A1/en
Publication of WO2008064577A8 publication Critical patent/WO2008064577A8/en

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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
    • G10L19/032—Quantisation or dequantisation of spectral components

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

A method for adjusting quantization quality in encoder. It comprises adjusting the first sample values to be encoded using two or more scale factors, and quantizing the first sample values adjusted to acquire quantized sample values. Then, getting rid of the influence of scale factors for the quantized sample values to get the second sample values, and based on the first sample values and the second sample values to get the global gain. Subsequently, encoding the quantized sample values, the two or more scale factors and the global gain into bit stream. Furthermore, the method for adjusting quantization quality in decoder and the apparatus for adjusting quantization quality in encoder and decoder can reduce the practical complication sharply, and adjust better quantization quality of important section, and acquire better encoding effect.
PCT/CN2007/003799 2006-12-01 2007-12-26 A method and an apparatus for adjusting quantization quality in encoder and decoder WO2008064577A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07855801A EP2104095A4 (en) 2006-12-01 2007-12-26 A method and an apparatus for adjusting quantization quality in encoder and decoder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 200610164330 CN101192410B (en) 2006-12-01 2006-12-01 Method and device for regulating quantization quality in decoding and encoding
CN200610164330.X 2006-12-01

Publications (2)

Publication Number Publication Date
WO2008064577A1 WO2008064577A1 (en) 2008-06-05
WO2008064577A8 true WO2008064577A8 (en) 2009-05-07

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Family Applications (1)

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PCT/CN2007/003799 WO2008064577A1 (en) 2006-12-01 2007-12-26 A method and an apparatus for adjusting quantization quality in encoder and decoder

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EP (1) EP2104095A4 (en)
CN (1) CN101192410B (en)
WO (1) WO2008064577A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101609674B (en) * 2008-06-20 2011-12-28 华为技术有限公司 Method, device and system for coding and decoding
CN101964690B (en) * 2009-07-22 2012-07-04 联芯科技有限公司 HARQ merged decoding method, device and system
JP5316896B2 (en) * 2010-03-17 2013-10-16 ソニー株式会社 Encoding device, encoding method, decoding device, decoding method, and program
CN102821069B (en) * 2011-06-07 2018-06-08 中兴通讯股份有限公司 Base station and uplink data compression method on base station side
CN103354091B (en) * 2013-06-19 2015-09-30 北京百度网讯科技有限公司 Based on audio feature extraction methods and the device of frequency domain conversion
CN105721879B (en) * 2016-01-26 2018-08-31 北京空间飞行器总体设计部 A kind of area-of-interest transmission method under survey of deep space image segmentation protection
CN111429944B (en) * 2020-04-17 2023-06-02 北京百瑞互联技术有限公司 Development test optimization method and system for codec

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388181A (en) * 1990-05-29 1995-02-07 Anderson; David J. Digital audio compression system
NL9100173A (en) * 1991-02-01 1992-09-01 Philips Nv SUBBAND CODING DEVICE, AND A TRANSMITTER EQUIPPED WITH THE CODING DEVICE.
DE69525836T2 (en) * 1994-11-04 2002-11-21 Koninkl Philips Electronics Nv ENCODING AND DECODING A BROADBAND DIGITAL INFORMATION SIGNAL
DE19638997B4 (en) * 1995-09-22 2009-12-10 Samsung Electronics Co., Ltd., Suwon Digital audio coding method and digital audio coding device
DE69830979T2 (en) * 1997-07-29 2006-05-24 Koninklijke Philips Electronics N.V. METHOD AND DEVICE FOR VIDEO CODING WITH VARIABLE BITRATE
CA2252170A1 (en) * 1998-10-27 2000-04-27 Bruno Bessette A method and device for high quality coding of wideband speech and audio signals
JP3594829B2 (en) * 1999-02-24 2004-12-02 アルパイン株式会社 MPEG audio decoding method
US6912496B1 (en) * 1999-10-26 2005-06-28 Silicon Automation Systems Preprocessing modules for quality enhancement of MBE coders and decoders for signals having transmission path characteristics
CN1318904A (en) * 2001-03-13 2001-10-24 北京阜国数字技术有限公司 Practical sound coder based on wavelet conversion
TWI220753B (en) * 2003-01-20 2004-09-01 Mediatek Inc Method for determining quantization parameters
JP4212591B2 (en) 2003-06-30 2009-01-21 富士通株式会社 Audio encoding device
KR100668299B1 (en) * 2004-05-12 2007-01-12 삼성전자주식회사 Digital signal encoding/decoding method and apparatus through linear quantizing in each section

Also Published As

Publication number Publication date
WO2008064577A1 (en) 2008-06-05
EP2104095A4 (en) 2012-07-18
CN101192410A (en) 2008-06-04
CN101192410B (en) 2010-05-19
EP2104095A1 (en) 2009-09-23

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