New algorithm for modulated complex lapped transform with symmetrical window function

被引：7

作者：

Dai, QH ^{[1
]}

Chen, XJ ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Automat, Beijing 100084, Peoples R China

来源：

IEEE SIGNAL PROCESSING LETTERS | 2004年 / 11卷 / 12期

基金：

中国国家自然科学基金;

关键词：

audio processing; fast algorithm; filter banks; lapped transforms;

D O I：

10.1109/LSP.2004.838191

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new algorithm for the fast computation of modulated complex lapped transform (MCLT) with symmetrical window function is proposed. The method is based on two discrete cosine transforms (DCTs), two stages of butterfly operations and additional multiplications. The real or imaginary part of the MCLT coefficients can be independently obtained from one of the two blocks of DCT coefficients. The proposed algorithm not only reduces the computational complexity compared with previous algorithms, but also has regular architecture which is suitable for hardware implementations.

引用

页码：925 / 928

页数：4

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