Logarithmic filter banks

Author

McGee, W.F. ; Zhang, Genzao

Author_Institution

Dept. of Electr. Eng., Ottawa Univ., Ont., Canada

fYear

1990

fDate

1-3 May 1990

Firstpage

661

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1990., IEEE International Symposium on

Conference_Location

New Orleans, LA

Type

conf

DOI

10.1109/ISCAS.1990.112164

Filename

112164