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Convention Paper

Design of Error-Resilient Layered Audio Codec

Authors: Yang, Dai; Ai, Hongmei; Kyriakakis, Chris; Kuo, C.-C. Jay

AES Convention 113 · Paper 5681 · October 2002

Abstract

Current high quality audio coding techniques mainly focus on coding efficiency, which makes them extremely sensitive to channel noise, especially in high error rate wireless channels. In this work, we propose an error-resilient layered audio codec (ERLAC) which provides functionalities of both fine-grain scalability and error-resiliency. A progressive quantization, a dynamic segmentation scheme, a frequency interleaving technique and an unequal error protection scheme are adopted in the proposed algorithm to construct the final error robust layered audio bitstream. The performance of the proposed algorithm is tested under different error patterns of WCDMA channels with several test audio materials. Our experimental results show that the proposed approach achieves excellent error resilience at a regular user bit rate of 64 kb/s.

Details

Published in
AES Convention 113
AES Convention
113
Paper number
5681
Publication date
October 6, 2002
Session subject
Low Bit-Rate Coding
Affiliation
University of Southern California, Los Angeles, CA (See document for exact affiliation information.)
Type
Convention Paper