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S. Voran, "Lossless Audio Coding with Bandwidth Extension Layers,"
Proceedings of the 2007 IEEE Workshop on Applications of Signal Processing
to Audio and Acoustics, New Paltz, NY, October 21-24 2007.
Abstract:
Layered audio coding typically offers reduced distortion as bit
rate is increased, but that distortion is spread across the entire
band until the lossless coding bit rate is reached and distortion
is eliminated. We propose a layered audio coding paradigm of
bandwidth extension, rather than distortion reduction. For
example, a core layer can provide lossless coding of a 24 kHz
bandwidth signal (fs=48 kHz), then first and second bandwidth
extension lossless layers can extend that signal to losslessly
coded 48 and then 96 kHz bandwidths (fs=96 and 192 kHz).
Full Paper |
