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Conference Paper

Post-processing and Computation in Parametric and Transform Audio Coders

Authors: Goodwin, Michael M; Wolters, Martin; Sridharan, Ramkumar

AES Conference: 22nd International Conference: Virtual, Synthetic, and Entertainment Audio · Paper 000254 · June 2002

Abstract

In this paper, we consider the relationship of audio coding and post-processing, both of which are important in modern audio applications. We primarily explore computational issues in parametric and transform coders with post-processing at the decoder. In standard subband/transform coders, the signal representation does not readily support general audio modifications. This inflexibility leads to a computational burden at the decoder if post-processing is desired, especially in multiple stream scenarios. We examine this problem, focussing on the basic modification of linear filtering, and show that parametric coders provide a computational advantage over traditional subband/transform coders.

Details

Published in
AES Conference: 22nd International Conference: Virtual, Synthetic, and Entertainment Audio
Paper number
000254
Publication date
June 6, 2002
Session subject
Virtual, Synthetic and Entertainment Audio
Affiliation
Creative Advanced Technology Center, Scotts Valley, CA, (See document for exact affiliation information.)
Type
Conference Paper