Title :
Logarithmic filter banks
Author :
McGee, W.F. ; Zhang, Genzao
Author_Institution :
Dept. of Electr. Eng., Ottawa Univ., Ont., Canada
Abstract :
A technique for designing and approximating digital filter banks whose center frequencies are spaced logarithmically is provided. The resonator with the purely imaginary transfer function on the unit circle is treated as the basic element of the bank, and the frequency interpolating filter bank structure is applied. Different pole-zero structures are studied, and an infinite filter bank is explored from the theoretical point of view. The connection to a variant of least-mean-square adaptive filters is described. The results show that these filter banks have good frequency response and allow control of crossover gain, and they are useful for voice and music analysis and tone receivers
Keywords :
adaptive filters; digital filters; frequency response; poles and zeros; transfer functions; bandpass filters; digital filter banks; frequency interpolating filter bank structure; frequency response; least-mean-square adaptive filters; logarithmic filter banks design; music analysis; pole-zero structures; resonator; tone receivers; transfer function; voice analysis; Adaptive filters; Channel bank filters; Filter bank; Filtering theory; Least squares approximation; RLC circuits; Resistors; Resonant frequency; Resonator filters; Transfer functions;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112164
