Multiple-description coding of speech using forward error correction codes

A flexible framework is presented which performs multiple-description coding of speech signals with two or more channels. The use of forward error correction codes together with a layered speech codec permits encoding into more than two descriptions without excessive increase in complexity. Results...

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Bibliographic Details
Published in2007 15th European Signal Processing Conference pp. 1377 - 1381
Main Authors Cluver, Kai, Weil, Jan, Sikora, Thomas
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2007
Subjects
Bit rate
Decoding
Packet loss
Phase change materials
Speech
Speech coding
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Summary:A flexible framework is presented which performs multiple-description coding of speech signals with two or more channels. The use of forward error correction codes together with a layered speech codec permits encoding into more than two descriptions without excessive increase in complexity. Results of a formal MOS listening test reveal considerable improvements in robustness as long as base layer quality and the number of descriptions are chosen appropriately. A modification of the original encoding scheme allows trading off bit rate savings against robustness to extreme channel conditions. Different coding schemes can easily be compared using a real-time demonstrator software.
ISBN:8392134044
9788392134046