Title :
Signal processor implementation of variable digital filters
Author :
Jarske, Petri ; Mitra, Sanjit K. ; Neuvo, Yrj
Author_Institution :
Dept. of Electr. Eng., Tampere Univ. of Technol., Finland
fDate :
9/1/1988 12:00:00 AM
Abstract :
The implementation of two recently introduced variable digital filter schemes using a TMS320-series digital signal processor is presented. One is a method for updating the coefficients of an FIR (finite-impulse response) filter in a simple manner such that the cutoff frequencies can be controlled through a single parameter. The other is a method for tuning the cutoff frequency of an IIR (infinite-impulse response) filter with one parameter using a series expansion of the low-pass-low-pass frequency transformation. The measured frequency responses compare well with the theory
Keywords :
digital filters; signal processing equipment; TMS320-series digital signal processor; cutoff frequency; finite impulse response filter; low-pass-low-pass frequency transformation; series expansion; tuning; variable digital filters; Band pass filters; Cutoff frequency; Digital filters; Digital signal processors; Finite impulse response filter; IIR filters; Instruments; Laboratories; Signal processing; Tuning;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
