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  4. Improved AAC performance @ < 64 kb/s using VQ
 
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1998
Conference Proceeding
Title

Improved AAC performance @ < 64 kb/s using VQ

Abstract
MPEG-4 Advanced Audio Coder performance can be improved, by reducing the bit load of "side information" and better utilization of the realized bits. Emphasizing the first part, using bitrate independent VQ codebooks for scale factors, it is shown that reconstruction quality can be improved at all bitrates, by a perceptually significant margin. The VQ complexity is also not much because of the sufficiency of smaller number of bits for the SCF vector.
Author(s)
Sreenivas, t.V.
Dietz, M.
Corporate Author
Audio Engineering Society -AES-
Publisher
AES  
Publishing Place
New York, NY
Conference
Audio Engineering Society (Convention) 1998  
Language
English
IIS-A  
Keyword(s)
  • AAC

  • advanced audio coding

  • data compression

  • data reduction

  • Datenkomprimierung

  • Datenreduktion

  • filterbank

  • low bitrate audio coding

  • MPEG

  • MPEG-2

  • MPEG-4

  • perceptual audio coding

  • Toncodierung

  • vector quantization

  • Vektorquantisierung

  • VQ

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