DOU Weibei
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- Professor
- Name (Simplified Chinese):DOU Weibei
- Name (English):DOU Weibei
- Business Address:清华大学罗姆楼4-102
- Contact Information:Email: douwb@tsinghua.edu.cn； Tel: 010-62781703
- Degree:Doctoral degree
- Professional Title:Professor
- Alma Mater:电子科技大学学士、法国雷恩大学硕士、法国卡昂大学博士
- Teacher College:DZGCX
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- Selected Publications
MDCT SPECTRUM SEPARATION: CATCHING THE FINE SPECTRAL STRUCTURES FOR STEREO CODING
Release time:2021-12-25 Hits:
- DOI number:10.1109/ICASSP.2010.5495834
- Journal:2010 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING
- Abstract:The spectrum of a sinusoid using the Modified Discrete Cosine Transform (MDCT), when separated into an even subspectrum and an odd subspectrum by bin parity, gives rise to a distinctive property-subspectral shapes are independent of the sinusoid phase, which contributes only to scaling. Based on this finding, we propose an Even-Odd (EO) scheme for stereo coding: partitioning the even and odd subspectra separately into subbands to capture the fine spectral structures of sinusoidal and rich tone signals. The scheme reduces the coding noises by 0-20 dB for music signals. When integrated into a MDCT domain KLT-based stereo coder, the scheme boosts subjective listening test (MUSHRA) scores. This coder, called KLT-EO, competes the Parametric Stereo (PS) in quality by a slightly higher bitrate but without the algorithmic delay of 20 ms resulted from the stereo processing.
- Co-author:Dou, Weibei, Chi, Ping, Yang, Huazhong
- First Author:Zhang, Shuhua,Zhongzhe Xiao, Dellandrea, E., Liming Chen, Weibei Dou
- Indexed by:会议论文
- Page Number:369-372
- ISSN No.:1520-6149
- Translation or Not:no
- Date of Publication:2010-03-10