| Paper: | 03-P1.10 (ICASSP 2003 Paper) | ||
| Session: | ICASSP 2003 Papers | ||
| Time: | Tuesday, May 18, 13:00 - 15:00 | ||
| Presentation: | Poster (ICASSP 2003 Presentation) | ||
| Topic: | ICASSP 2003 Papers: ICASSP 2003 Papers | ||
| Title: | LEAST SQUARES DESIGN OF NONUNIFORM FILTER BANKS WITH EVALUATION IN SPEECH ENHANCEMENT | ||
| Authors: | Jan Mark de Haan; Blekinge Institute of Technology | ||
| Ingvar Claesson; Blekinge Institute of Technology | |||
| Harald Gustafsson; Ericsson Mobile Platforms | |||
| Abstract: | This paper presents a method for least squares design ofnonuniform filter banks for application in subband signalprocessing. Design objectives aim to optimize the filter bankfrequency response while minimizing subband and output aliasing.Aliasing is minimized although magnitude and phase changes affectthe aliasing terms. Filter banks with increasing bandwidth aredesigned with the proposed method and evaluated in speechenhancement using a spectral subtraction algorithm. When using anonuniform frequency resolution approximating that of the humanauditory system it is shown that an increased noise reduction andSNR improvement is achieved while maintaining the speech qualityfor a fixed number of frequency-bands. | ||
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