Parametric Phase Equalizers for Warped Filter-Banks

Löllmann H, Vary P (2006)


Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2006

Pages Range: 1-5

Conference Proceedings Title: Proceedings of European Signal Processing Conference (EUSIPCO)

Event location: Florence IT

Open Access Link: https://www.eurasip.org/Proceedings/Eusipco/Eusipco2006/HTML/main.htm

Abstract

In this paper, phase equalizers are investigated which aim to compensate the non-linear phase response of a frequency warped filter-bank and a new design is proposed. The frequency resolution of a warped filter-bank based on an allpass transformation can be adjusted by a single allpass coefficient. Thus, parametric phase equalizers are of special interest as their coefficients are given by a closed-form expression in dependence on this allpass coefficient. The approximation error for parametric FIR phase equalizers is analyzed. They can achieve a low phase error but introduce magnitude distortions. These distortions can be avoided by using allpass phase equalizers. A new parametric allpass phase equalizer is proposed. It has a lower complexity than a general allpass phase equalizer and leads to an equiripple approximation error for the desired phase response and group-delay.

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How to cite

APA:

Löllmann, H., & Vary, P. (2006). Parametric Phase Equalizers for Warped Filter-Banks. In EURASIP (Eds.), Proceedings of European Signal Processing Conference (EUSIPCO) (pp. 1-5). Florence, IT.

MLA:

Löllmann, Heinrich, and Peter Vary. "Parametric Phase Equalizers for Warped Filter-Banks." Proceedings of the European Signal Processing Conference (EUSIPCO), Florence Ed. EURASIP, 2006. 1-5.

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