Direct design of nonuniform filter banks

Author

Nagai, Takayuki ; Futie, Takaaki ; Ikeh, Masaaki

Author_Institution

Dept. of Electr. Eng., Keio Univ., Yokohama, Japan

Volume

3

fYear

1997

fDate

21-24 Apr 1997

Firstpage

2429

Abstract

In this research, we propose a direct design method of nonuniform filter banks (NUFBs). This method is based on frequency domain constraints to eliminate the amplitude and the aliasing distortions. Both NUFBs with integer and rational sampling factors can be designed with a common procedure. Here, we also consider the design method which requires only to solve linear equations iteratively. In our proposed method, least square errors of the perfect reconstruction (PR) constraints are minimized without using the nonlinear programming technique

Keywords

band-pass filters; delay circuits; filtering theory; frequency-domain analysis; frequency-domain synthesis; iterative methods; least squares approximations; minimisation; signal reconstruction; signal sampling; aliasing distortion elimination; amplitude distortion elimination; direct design method; frequency domain constraints; integer sampling factors; iterative solutions; least square errors minimisation; linear equations; linear phase filters; nonuniform filter banks; perfect reconstruction constraints; rational sampling factors; Channel bank filters; Cost function; Design methodology; Filter bank; Frequency domain analysis; Least squares methods; Nonlinear distortion; Nonlinear equations; Sampling methods; Speech coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on

Conference_Location

Munich

ISSN

1520-6149

Print_ISBN

0-8186-7919-0

Type

conf

DOI

10.1109/ICASSP.1997.599547

Filename

599547