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On filter banks with rational oversampling

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3 Author(s)
von Borries, R.F. ; Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA ; De Queiroz, R.L. ; Burrus, C.S.

Despite the great popularity of critically-decimated filter banks, oversampled filter banks are useful in applications where data expansion is not a problem. We studied oversampled filter banks and showed that for some popular classes of filter banks it is not possible to obtain perfect reconstruction with rational (non-integer) oversampling ratios. Nevertheless, it is always possible to oversample the analysis filter bank by an integer factor, ie, there will be a similar synthesis bank which would provide perfect reconstruction. The analysis is carried within a time-aliasing framework development to analyze non-critically decimated filter banks

Published in:
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on  (Volume:6 )

Date of Conference: 2001

Page(s):
3657 - 3660 vol.6
Meeting Date :
07 May 2001-11 May 2001
ISSN :
1520-6149
Print ISBN:
0-7803-7041-4
INSPEC Accession Number:
7144915
Conference Location :
Salt Lake City, UT
Digital Object Identifier :
10.1109/ICASSP.2001.940635
Product Type:
Conference Publications

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