Design of FIR filters combining the frequency-response masking and the WLS-Chebyshev approaches

Author

Barcellos, Luiz C R ; Netto, Sergio L. ; Diniz, Paulo S R

Author_Institution

COPPE, Univ. Federal do Rio de Janeiro, Brazil

Volume

2

fYear

2001

fDate

6-9 May 2001

Firstpage

613

Abstract

This paper presents an efficient method for designing FIR filters by combining the frequency-response masking (FRM) approach with the WLS-Chebyshev method. With the proposed method, the specifications for the base filter in the FRM approach can be relaxed. This is accomplished based on the ability of the WLS-Chebyshev method for finding a good compromise between the minimum attenuation and total energy within the filter´s stopband. A typical design performed with the proposed method is included indicating that the total number of multiplications per output sample required is significantly reduced

Keywords

Chebyshev approximation; FIR filters; digital filters; filtering theory; frequency response; least squares approximations; FIR filter design; WLS-Chebyshev approach; frequency-response masking; multiplications reduction; weighted least squares; Band pass filters; Chebyshev approximation; Cutoff frequency; Delay effects; Design methodology; Digital filters; Electronic mail; Finite impulse response filter; Frequency response; Passband;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6685-9

Type

conf

DOI

10.1109/ISCAS.2001.921145

Filename

921145