New linearly tapered window and its application to FIR filter design

Author

Visweswar, Chethan ; Mitra, Sanjit K.

Author_Institution

Dept. of E1cctrical & Comput. Eng., California Univ., Santa Barbara, CA, USA

Volume

3

fYear

2005

fDate

28 Aug.-2 Sept. 2005

Abstract

A new class of linearly tapered window, obtained by the convolution of a moving average filter and a running sum filter of unequal lengths, is introduced. The sidelobe rejection of the new window is between that of the rectangular and the Hann windows, and can be varied as a function of the lengths of the two convolving filters. We study the properties of the new window and provide empirical formulas for the sidelobe rejection and the mainlobe width. We propose rules for finite impulse response (FIR) filter design using the new window and show that a significant reduction in the filter length can be obtained as compared to that of the filter designed using the Hann window.

Keywords

FIR filters; convolution; moving average processes; FIR filter design; Hann window; convolving filter; filter convolution; finite impulse response filters; linear tapered window; mainlobe width; moving average filters; rectangular window; running sum filters; sidelobe rejection; Apertures; Attenuation; Computational complexity; Convolution; Costs; Design methodology; Finite impulse response filter; Smoothing methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on

Print_ISBN

0-7803-9066-0

Type

conf

DOI

10.1109/ECCTD.2005.1523156

Filename

1523156