ATE532175T1 - OPTIMIZING MP3 ENCODING WITH FULL DECODER COMPATIBILITY - Google Patents

OPTIMIZING MP3 ENCODING WITH FULL DECODER COMPATIBILITY

Info

Publication number
ATE532175T1
ATE532175T1 AT08170396T AT08170396T ATE532175T1 AT E532175 T1 ATE532175 T1 AT E532175T1 AT 08170396 T AT08170396 T AT 08170396T AT 08170396 T AT08170396 T AT 08170396T AT E532175 T1 ATE532175 T1 AT E532175T1
Authority
AT
Austria
Prior art keywords
encoding
optimizing
determined
step size
quantization step
Prior art date
Application number
AT08170396T
Other languages
German (de)
Inventor
Guixing Wu
En-Hui Yang
Original Assignee
Research In Motion Ltd
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 Research In Motion Ltd filed Critical Research In Motion Ltd
Application granted granted Critical
Publication of ATE532175T1 publication Critical patent/ATE532175T1/en

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
    • G10L19/02—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
    • G10L19/035—Scalar quantisation

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

An iterative rate-distortion optimization algorithm for MPEG I/II Layer-3 (MP3) encoding based on the method of Lagrangian multipliers. Generally, an iterative method is performed such that a global quantization step size is determined while scale factors are fixed, and thereafter the scale factors are determined while the global quantization step size is fixed. This is repeated until a calculated rate-distortion cost is within a predetermined threshold. The methods are demonstrated to be computationally efficient and the resulting bit stream is fully standard compatible.
AT08170396T 2008-12-01 2008-12-01 OPTIMIZING MP3 ENCODING WITH FULL DECODER COMPATIBILITY ATE532175T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08170396A EP2192577B1 (en) 2008-12-01 2008-12-01 Optimization of MP3 encoding with complete decoder compatibility

Publications (1)

Publication Number Publication Date
ATE532175T1 true ATE532175T1 (en) 2011-11-15

Family

ID=40568705

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08170396T ATE532175T1 (en) 2008-12-01 2008-12-01 OPTIMIZING MP3 ENCODING WITH FULL DECODER COMPATIBILITY

Country Status (3)

Country Link
EP (1) EP2192577B1 (en)
AT (1) ATE532175T1 (en)
CA (1) CA2686264C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013146895A1 (en) * 2012-03-28 2013-10-03 日本電信電話株式会社 Encoding method, encoding device, decoding method, decoding device, program, and recording medium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG136836A1 (en) * 2006-04-28 2007-11-29 St Microelectronics Asia Adaptive rate control algorithm for low complexity aac encoding

Also Published As

Publication number Publication date
EP2192577A1 (en) 2010-06-02
EP2192577B1 (en) 2011-11-02
CA2686264A1 (en) 2010-06-01
CA2686264C (en) 2015-01-27

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