Variable linear phase FIR filters

Author

Jarske, Petri ; Mitra, Sanjit K. ; Neuvo, Yrojö

Author_Institution

Dept. of Electr. Eng., Tampere Univ. of Technol., Finland

fYear

1988

fDate

11-14 Apr 1988

Firstpage

1463

Abstract

A class of linear-phase digital filters is discussed for which the filter coefficients are simple functions of the parameters determining the desired frequency response. In the case of lowpass filters, the 6-dB cutoff frequency is the parameter considered. High-pass, bandpass, bandstop, and notch filters can be obtained with simple transformations from a low-pass prototype. The filters are variable over nearly the whole frequency range from zero to half the sampling frequency. Due to direct control of filter coefficients, the length of the filter does not change when it is made variable

Keywords

band-pass filters; band-stop filters; digital filters; filtering and prediction theory; high-pass filters; low-pass filters; notch filters; 6-dB cutoff frequency; FIR filters; band-pass filters; band-stop filters; frequency response; high-pass filters; linear-phase digital filters; lowpass filters; notch filters; variable filters; Band pass filters; Cutoff frequency; Design methodology; Digital filters; Filtering theory; Finite impulse response filter; Frequency response; Nonlinear filters; Prototypes; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on

Conference_Location

New York, NY

ISSN

1520-6149

Type

conf

DOI

10.1109/ICASSP.1988.196877

Filename

196877