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Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers (1994)
Pacific Grove, CA, USA
Oct. 31, 1994 to Nov. 2, 1994
ISSN: 1058-6393
ISBN: 0-8186-6405-3
pp: 1497-1500
R.H. Strandberg , Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
J.-C. Le Duc , Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
Zsu-Yao Yang , Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
L.G. Bustamante , Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
V.G. Oklobdzija , Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
M.A. Soderstrand , Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
ABSTRACT
Adaptive sample rate filtering has been shown to be effective in notch filter realization for removing narrowband push-to-talk interference. A prototype architecture is proposed for application to adaptive sample rate filtering which is capable of being reconfigured in real-time. This proposed architecture features field programmable gate array (FPGA) devices and ROM, and is to be demonstrated on audio signals using an XC4000 BORG prototyping board. A comparison is made between the computational complexity of the proposed architecture for adaptive sample rate filtering to that of traditional adaptive techniques which update filter coefficients. The results provide a measure of the advantages of the adaptive sample rate approach for notch filter applications.<>
INDEX TERMS
real-time systems, adaptive filters, adaptive signal processing, filtering theory, signal sampling, notch filters, field programmable gate arrays, read-only storage, audio signals, reconfigurable architectures, interference suppression
CITATION

R. Strandberg, J. Le Duc, Zsu-Yao Yang, L. Bustamante, V. Oklobdzija and M. Soderstrand, "Reconfigurable processor for real-time adaptive sample rate notch filtering," Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers(ACSSC), Pacific Grove, CA, USA, 1995, pp. 1497-1500.
doi:10.1109/ACSSC.1994.471707
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