Low delay IIR QMF banks with high perceptive quality for speech processing

Author

Kleinmann, Thomas ; Lacroix, Arild

Author_Institution

Inst. fur Angewandte Phys., Frankfurt Univ., Germany

Volume

1

fYear

1996

fDate

7-10 May 1996

Firstpage

259

Abstract

It is well-known that low delay IIR QMF banks induce phase distortions which restrict their suitability for communications, speech processing and audio systems. We describe investigations of the perceptive quality of different IIR QMF bank structures and propose structural means to reduce the subjective perception of phase distortions. The filterbanks are implemented in a special DSP32C signal processor environment enabling the real time processing of sufficiently large speech records

Keywords

IIR filters; band-pass filters; delays; filtering theory; quadrature mirror filters; speech intelligibility; speech processing; DSP32C signal processor environment; audio systems; communications; filterbanks; high perceptive quality; large speech records; low delay IIR QMF banks; phase distortions; real time processing; speech processing; speech quality; subjective perception; Channel bank filters; Delay; Filter bank; Frequency; IIR filters; Phase distortion; Prototypes; Speech processing; Testing; Tree data structures;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on

Conference_Location

Atlanta, GA

ISSN

1520-6149

Print_ISBN

0-7803-3192-3

Type

conf

DOI

10.1109/ICASSP.1996.540407

Filename

540407