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
DFT spectrum estimation from critically sampled lapped transforms
Release time:2021-12-25 Hits:
- DOI number:10.1016/j.sigpro.2010.07.009
- Journal:SIGNAL PROCESSING
- Abstract:Critically sampled perfect reconstruction lapped transforms (LT), apart from signal representation, are difficult to use for signal analysis and processing. We tackle this problem by establishing a novel connection between the LT and the DFT based on matrix analysis. Specifically, for the modified discrete cosine transform (MDCT) with an arbitrary symmetric window, one of the most widely used LT, a sparse matrix representation for the conversion to and from the DFT is developed, leading to an efficient implementation in the form of low-order frequency domain FIR filtering. We give two example applications, MDCT domain group delay estimation and aliasing reduction for the temporal noise shaping (TNS). (C) 2010 Elsevier B.V. All rights reserved.
- Co-author:Dou, W., Yang, H.,Aoyan Dong, Ping Chi, Shaowu Li, Constans, J.-M.
- First Author:Zhang, S.,Weibei Dou, Aoyan Dong, Ping Chi, Shaowu Li, Constans, J.-M.
- Indexed by:Journal paper
- Volume:91
- Issue:2
- Page Number:300-310
- ISSN No.:0165-1684
- Translation or Not:no
- Date of Publication:2011-02-01