Application of DFT filter banks and cosine modulated filter banks in filtering

Yuan-Pei Lin*, P. P. Vaidyanathan

*此作品的通信作者

研究成果: Paper同行評審

13 引文 斯高帕斯(Scopus)

摘要

A filter bank is said to be under-decimated if the number of channels is more than the decimation ratio in the subbands. This paper introduces a new under-decimated system where two types of low-complexity filter banks can be used, the DFT filter bank and cosine modulated filter bank. In both cases, the system is approximately alias-free and overall response is equivalent to a tunable multilevel filter. Properties of the DFT filter banks and the cosine modulated filter banks can be exploited to simultaneously achieve parallelism, computational saving and lower working rate. Furthermore, in both filter banks the implementation cost of the analysis bank is comparable to that of one prototype filter plus some low complexity matrices. The individual analysis and synthesis filters have complex coefficients in the DFT filter bank but have real coefficients in the cosine modulated filter bank.

原文English
頁面254-259
頁數6
DOIs
出版狀態Published - 1 12月 1994
事件Proceedings of the 1994 IEEE Asia-Pacific Conference on Circuits and Systems - Taipei, Taiwan
持續時間: 5 12月 19948 12月 1994

Conference

ConferenceProceedings of the 1994 IEEE Asia-Pacific Conference on Circuits and Systems
城市Taipei, Taiwan
期間5/12/948/12/94

指紋

深入研究「Application of DFT filter banks and cosine modulated filter banks in filtering」主題。共同形成了獨特的指紋。

引用此