Title :
Extrapolated impulse response FIR filters
Author :
Lim, Y.C. ; Liu, B.
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
fDate :
12/1/1990 12:00:00 AM
Abstract :
An FIR filter structure with reduced hardware complexity is presented. It makes use of the quasi-periodic nature of the impulse response samples of low-pass and high-pass filters to extrapolate the filter length. Because of the reduced number of multipliers, it has lower roundoff noise power compared to the direct-form structure. In this technique, one period of the impulse response is realized accurately and the other periods with smaller magnitudes are realized as scaled versions of that period
Keywords :
digital filters; filtering and prediction theory; high-pass filters; linear programming; low-pass filters; roundoff errors; extrapolated impulse response; filter length extrapolation; hardware complexity reduction; high-pass filters; impulse response FIR filters; linear programming; low-pass; narrowband type; optimisation; roundoff noise power; Algorithm design and analysis; Circuits; Digital signal processing; Discrete transforms; Finite impulse response filter; Optimized production technology; Signal analysis; Signal processing; Signal processing algorithms; Speech processing;
Journal_Title :
Circuits and Systems, IEEE Transactions on
