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Convention Paper

Upfront Time Segmentation Methods for Transform Coding of Audio

Authors: Heusdens, Richard; Lincklaen Arriëns, Huib J.; Niamut, Omar A.

AES Convention 119 · Paper 6585 · October 2005

Abstract

We study a transform coder that employs a dynamic programming based rate-distortion optimization framework for time segmentation. Although this coder exhibits a high performance, its computational complexity makes it unfeasible for many practical applications. It is investigated whether upfront time segmentation can reduce computational complexity without a significant increase in perceptual distortion. Upfront time segmentation can be accomplished by replacing the rate-distortion cost functional with low-complexity cost measures, that are independent of bit rate and perceptual distortion. Through both quantitative and qualitative evaluation it is shown that dynamic programming based upfront time segmentation for minimization of perceptual entropy can be a viable alternative to rate-distortion optimal time segmentation.

Details

Published in
AES Convention 119
AES Convention
119
Paper number
6585
Publication date
October 6, 2005
Session subject
Audio Coding
Affiliation
Delft University of Technology (See document for exact affiliation information.)
Type
Convention Paper