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SE0301272D0 - Adaptive voice enhancement for low bit rate audio coding - Google Patents

Adaptive voice enhancement for low bit rate audio coding

Info

Publication number
SE0301272D0
SE0301272D0 SE0301272A SE0301272A SE0301272D0 SE 0301272 D0 SE0301272 D0 SE 0301272D0 SE 0301272 A SE0301272 A SE 0301272A SE 0301272 A SE0301272 A SE 0301272A SE 0301272 D0 SE0301272 D0 SE 0301272D0
Authority
SE
Sweden
Prior art keywords
signal
bit rate
processing
audio coding
low bit
Prior art date
Application number
SE0301272A
Other languages
Swedish (sv)
Inventor
Heiko Purnhagen
Original Assignee
Coding Technologies Sweden Ab
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 Coding Technologies Sweden Ab filed Critical Coding Technologies Sweden Ab
Priority to SE0301272A priority Critical patent/SE0301272D0/en
Publication of SE0301272D0 publication Critical patent/SE0301272D0/en
Priority to PCT/EP2004/004608 priority patent/WO2004097795A2/en

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  • 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)
  • Quality & Reliability (AREA)

Abstract

The present invention provides improvements to prior art audio codecs applied to voice signals like human speech. These improvements are accomplished by adaptively processing (501) the signal in the decoder to reduce perceived distortion introduced by the coding process, primarily for voiced parts of the audio signal. The signal processing is adaptively controlled by signal analysis in the encoder or in the decoder. The invention can be applied as post-processing in a general audio codec or can be applied as intermediate processing step in a general audio codec that utilizes high frequency reconstruction (HFR) techniques.
SE0301272A 2003-04-30 2003-04-30 Adaptive voice enhancement for low bit rate audio coding SE0301272D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0301272A SE0301272D0 (en) 2003-04-30 2003-04-30 Adaptive voice enhancement for low bit rate audio coding
PCT/EP2004/004608 WO2004097795A2 (en) 2003-04-30 2004-04-30 Adaptive voice enhancement for low bit rate audio coding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0301272A SE0301272D0 (en) 2003-04-30 2003-04-30 Adaptive voice enhancement for low bit rate audio coding

Publications (1)

Publication Number Publication Date
SE0301272D0 true SE0301272D0 (en) 2003-04-30

Family

ID=20291179

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0301272A SE0301272D0 (en) 2003-04-30 2003-04-30 Adaptive voice enhancement for low bit rate audio coding

Country Status (2)

Country Link
SE (1) SE0301272D0 (en)
WO (1) WO2004097795A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR122019023704B1 (en) 2009-01-16 2020-05-05 Dolby Int Ab system for generating a high frequency component of an audio signal and method for performing high frequency reconstruction of a high frequency component
US8886548B2 (en) * 2009-10-21 2014-11-11 Panasonic Corporation Audio encoding device, decoding device, method, circuit, and program

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3653826B2 (en) * 1995-10-26 2005-06-02 ソニー株式会社 Speech decoding method and apparatus
DE10124421C1 (en) * 2001-05-18 2002-10-17 Siemens Ag Method for estimating a codec parameter
US7177803B2 (en) * 2001-10-22 2007-02-13 Motorola, Inc. Method and apparatus for enhancing loudness of an audio signal

Also Published As

Publication number Publication date
WO2004097795A2 (en) 2004-11-11
WO2004097795A3 (en) 2005-01-13

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