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Convention Paper

Speeding Up HILN-MPEG-4 Parametric Audio Encoding with Reduced Complexity

Authors: Purnhagen, Heiko; Meine, Nikolaus; Edler, Bernd

AES Convention 109 · Paper 5177 · September 2000

Abstract

Parametric modeling permits an efficient representation of audio signals and is utilized for very low bit-rate coding in the MPEG-4 Standard. The paper examines the MPEG-4 parametric audio coding tools, Harmonic and Individual Lines plus Noise (HILN), which are based on a decomposition of the audio signal into components that are described by appropriate source models and represented by model parameters. Until now, HILN encoding mainly focused on maximum audio quality at the expense of high-computational complexity. In this paper different approaches to speed up HILN encoding are presented and the tradeoff between computational complexity and audio quality is analyzed.:

Details

Published in
AES Convention 109
AES Convention
109
Paper number
5177
Publication date
September 6, 2000
Session subject
Digital Signal Processing
Affiliation
University of Hannover, Hannover, Germany (See document for exact affiliation information.)
Type
Convention Paper