Tunable and variable passive digital filters for multimedia signal processing

Author

Kwan, H.K.

Author_Institution

Dept. of Electr. & Comput. Eng., Windsor Univ., Ont., Canada

fYear

2001

fDate

2001

Firstpage

229

Lastpage

232

Abstract

The paper introduces a class of tunable and variable digital filters, which are derived from passive digital filters. By changing the values of their filter coefficients, the frequency response characteristics of these passive digital filters can be tuned or varied. These tunable and variable passive digital filters include first-order and second-order lowpass and highpass digital filters, and second-order bandpass and bandstop digital filters. 2D and 3D tunable and variable passive digital filters can be obtained by cascading 1D filter sections. Simulation results are given to illustrate their frequency response tunability and variability. Due to their pseudopassivity property, these variable passive digital filters are oscillation-free under finite word-length operations

Keywords

band-pass filters; band-stop filters; digital filters; frequency response; high-pass filters; low-pass filters; multimedia systems; passive filters; signal processing; signal processing equipment; tuning; 2D filters; 3D filters; cascading 1D filter sections; filter coefficients; finite word-length operations; first-order highpass digital filters; first-order lowpass digital filters; frequency response characteristics; frequency response tunability; frequency response variability; multimedia signal processing; pseudopassivity property; second-order bandpass digital filters; second-order bandstop digital filters; second-order highpass digital filters; second-order lowpass digital filters; simulation; tunable passive digital filters; variable passive digital filters; Band pass filters; Bandwidth; Cutoff frequency; Digital filters; Digital signal processing; Finite wordlength effects; Frequency response; Passive filters; Sampling methods; Speech processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Multimedia, Video and Speech Processing, 2001. Proceedings of 2001 International Symposium on

Conference_Location

Hong Kong

Print_ISBN

962-85766-2-3

Type

conf

DOI

10.1109/ISIMP.2001.925374

Filename

925374