Designs of low delay cosine modulated filter banks and subband amplifiers

Ling, Wing-Kuen, Al Hosni, K. Z. K. and Dam, Hai Huyen (2011) Designs of low delay cosine modulated filter banks and subband amplifiers. In: 19th European Signal Processing Conference EUSIPCO 2011, August 29 - September 2 2011, Barcelona, Spain.

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Item Type:Conference or Workshop contribution (Lecture)
Item Status:Live Archive


This paper proposes a design of a low delay cosine modu-lated filter bank and subband amplifier coefficients for digi-tal audio hearing aids denoising applications. The objective of the design is to minimize the delay of the filter bank. Speci-fications on the maximum magnitude of both the real and the imaginary parts of the transfer function distortion and the aliasing distortion of the filter bank are imposed. Also, the constraint on the maximum absolute difference between the desirable magnitude square response and the designed mag-nitude square response of the prototype filter over both the passband and the stopband is considered. The subband am-plifier coefficients are designed based on a least squares training approach. The average mean square errors between the noisy samples and the clean samples is minimized. Com-puter numerical simulation results show that our proposed approach could significantly improve the signal-to-noise ratio of digital audio hearing aids.

Keywords:low delay, cosine modulated filter banks, audio hearing aids
Subjects:H Engineering > H610 Electronic Engineering
Divisions:College of Science > School of Engineering
ID Code:4525
Deposited On:05 Jun 2011 07:49

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