Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Adaptive Filter Banks using Fixed Size MDCT and Subband Merging for Audio Coding- Comparison with the MPEG AAC Flter Banks

Authors: Bimbot, Frederic; Camberlein, Ewen; Philippe, Pierrick

AES Convention 121 · Paper 6894 · October 2006

Abstract

The MPEG Audio AAC Standard [1] uses two MDCT sizes and transition windows in order to adapt these uniform transforms to the signal specifics. Here, we present a new adaptation scheme based on a fixed size MDCT where subband merging is done in order to obtain better temporal resolution on chosen parts of the spectrum. The performances of the proposed approach are evaluated, with respect to the AAC, thanks to an objective measure, which takes into account the temporal masking effect.

Details

Published in
AES Convention 121
AES Convention
121
Paper number
6894
Publication date
October 6, 2006
Session subject
Audio Coding
Affiliation
France Télécom R&D; IRISA (See document for exact affiliation information.)
Type
Convention Paper