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Coding overcomplete representations of audio using the MCLT

Yoon, Byung‐Jun and Malvar, Henrique S. (2008) Coding overcomplete representations of audio using the MCLT. In: DCC 2008 : 2008 Data Compression Conference. IEEE Computer Society , Los Alamitos, CA, pp. 152-161. ISBN 978-0-7695-3121-2.

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We propose a system for audio coding using the modulated complex lapped transform (MCLT). In general, it is difficult to encode signals using overcomplete representations without avoiding a penalty in rate-distortion performance. We show that the penalty can be significantly reduced for MCLT-based representations, without the need for iterative methods of sparsity reduction. We achieve that via a magnitude-phase polar quantization and the use of magnitude and phase prediction. Compared to systems based on quantization of orthogonal representations such as the modulated lapped transform (MLT), the new system allows for reduced warbling artifacts and more precise computation of frequency-domain auditory masking functions.

Item Type:Book Section
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Additional Information:© 2008 IEEE.
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INSPEC Accession Number9913155
Record Number:CaltechAUTHORS:20100721-145403250
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19147
Deposited By: Tony Diaz
Deposited On:30 Jul 2010 21:43
Last Modified:08 Nov 2021 23:50

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