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.
Authors:
Gao, Ge; Hang, Bo; Hu, Ruimin; Yang, Yuhong
Affiliation:
Wuhan University, Wuhan, China
AES Convention:
129 (November 2010)
Paper Number:
8287
Publication Date:
November 4, 2010
Subject:
Low-Bit-Rate Audio Coding
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.