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Convention Paper

A Low Bit Rate Mobile Audio High Frequency Reconstruction

Authors: Gao, Ge; Hang, Bo; Hu, Ruimin; Yang, Yuhong

AES Convention 129 · Paper 8287 · November 2010

Abstract

In present mobile communication system, high quality audio signal is supposed to be provided with low bit rate and low computational complexity. To increase the high frequency band quality in current communication system, this paper proposed a novel audio coding high frequency bandwidth extension method, which can improve decoded audio quality with increasing only a few coding bits per frame and a little computational complexity. This method calculates high-frequency synthesis filter parameters by using codebook mapping method, and transmits quantified gain corrections in high-frequency part of multiplexing coding bit stream. The test result shows that this method can provide comparable audio quality with lower bit consumption and computational complexity compared to the high frequency regeneration of AVS-P10.

Details

Published in
AES Convention 129
AES Convention
129
Paper number
8287
Publication date
November 6, 2010
Session subject
Low-Bit-Rate Audio Coding
Affiliation
Wuhan University, Wuhan, China (See document for exact affiliation information.)
Type
Convention Paper