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Convention Paper

Efficient AAC Single Layer Transcoer

Authors: Chiang, Tihao; Hang, Hsueh-Ming; Lai, Te-Hsueh; Lee, Chunyi; Yang, Cheng-Han

AES Convention 117 · Paper 6219 · October 2004

Abstract

This paper presents a novel algorithm for transcoding the MPEG-4 AAC single-layer bit-streams for bit-rate adaptation purpose. The delivery of multimedia over heterogeneous networks and to the devices with various capabilities calls for the bit-rate adaptation. A previous approach that cascades a pair of full-grown decoder and encoder has very high computational complexity. Our approach can reduce the complexity drastically while the coding efficiency is close to that of the previous cascaded method. In order to achieve such simplification, three rate-distortion models/techniques are employed.

Details

Published in
AES Convention 117
AES Convention
117
Paper number
6219
Publication date
October 6, 2004
Session subject
Instrumentation and Measurement; Lossy and Lossless Audio Coding
Affiliation
Department of Electronics Engineering, National Chiao Tung University, Hsinchu, Taiwan, R.O.C. (See document for exact affiliation information.)
Type
Convention Paper