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A new method for designing IIR digital filters with linear phase in the passband is proposed. This method is based on frequency-weighted least-square error optimization using the Broyden-Fletcher-Goldfarb-Shanno (BFGS) method. The gradient of the cost function with respect to the design parameters, required for the implementation of the BFGS method, is derived. The proposed method is started by obtaining an initial IIR filter design using model reduction of a linear phase FIR filter. Based on this initial design the cost function is minimized using the BFGS method. An example shows that the proposed method leads to very good filter designs
Published in:
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
(Volume:6
)
Date of Conference: 2001
- Page(s):
- 3817 - 3820 vol.6
- Meeting Date :
- 07 May 2001-11 May 2001
- ISSN :
- 1520-6149
- Print ISBN:
- 0-7803-7041-4
- INSPEC Accession Number:
- 7144955
- Conference Location :
- Salt Lake City, UT
- Digital Object Identifier :
- 10.1109/ICASSP.2001.940675
- Product Type:
- Conference Publications
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