The performance of wavelets in terms of vanishing moments, regularity, and complexity is investigated for low bit-rate coding of audio signals. To assess the coding gain of wavelets, a codec model has been designed and implemented based on a wavelet packet algorithm and an auditory perception model combined with entropy noiseless coding. The wavelet packet-based coding approach is compared to the MPEG-audio international standard in terms of objective and subjective measurements and is shown to be superior to MPEG-audio Layer I and competitive with Layer II. The trade-offs between the two approaches are discussed.

Authors: Kudumakis, Panos E.; Sandler, Mark B.
Affiliation: King's College London, Strand, London, UK
AES Convention: 99 (October 1995) Paper Number: 4048
Publication Date: October 1, 1995 Import into BibTeX
Subject: Wavelets
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=7718

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