Matched low-pass filter design for orthogonal IIR filter banks

Larry Wilkinson; Ajit S. Bopardikar; Raghuveer M. Rao; Harold H. Szu

doi:10.1117/12.458732

8 March 2002 Matched low-pass filter design for orthogonal IIR filter banks

Larry Wilkinson, Ajit S. Bopardikar, Raghuveer M. Rao, Harold H. Szu

Proceedings Volume 4738, Wavelet and Independent Component Analysis Applications IX; (2002) https://doi.org/10.1117/12.458732
Event: AeroSense 2002, 2002, Orlando, FL, United States

Abstract

This paper addresses a solution to the problem of designing the low pass filter of a two-channel IIR orthogonal perfect reconstruction filter bank to match a specified frequency response. The derived solution treats independently the numerator and denominator in the rational transfer function. Based on the proposed solutions, a low pass filter is matched to a desired frequency response and the frequency response constrained to be have multiple zeroes at (pi) . The end result is a low pass filter with a smoother response function than FIR based solutions for a given number of filter coefficients while optimal in the sense of being close to desired functions. The paper concludes by demonstrating the solution by matching the low pass filter of a Meyer wavelet.

Citation Download Citation

Larry Wilkinson, Ajit S. Bopardikar, Raghuveer M. Rao, and Harold H. Szu "Matched low-pass filter design for orthogonal IIR filter banks", Proc. SPIE 4738, Wavelet and Independent Component Analysis Applications IX, (8 March 2002); https://doi.org/10.1117/12.458732

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