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Convention Paper

A New Class of Smooth Power Complementary Windows and Their Application to Audio Signal Processing

Authors: Ferreira, Aníbal J. S.; Sinha, Deepen

AES Convention 119 · Paper 6604 · October 2005

Abstract

In this paper we describe a new family of smooth power complementary windows which exhibit a very high level of localization in both time and frequency domain. This window family is parameterized by a "smoothness quotient". As the smoothness quotient increases the window becomes increasingly localized in time (most of the energy gets concentrated in the center half of the window) and frequency (far field rejection becomes increasing stronger to the order of 150 dB or higher). A closed form solution for such window function exists and the associated design procedure is described. The new class of windows is quite attractive for a number of applications as switching functions, equalization functions, or as windows for overlap-add and modulated filter banks. An extension to the family of smooth windows which exhibits improved near-field response in the frequency domain is also discussed. More information is available at http://www.atc-labs.com/technology/misc/windows.

Details

Published in
AES Convention 119
AES Convention
119
Paper number
6604
Publication date
October 6, 2005
Session subject
Signal Processing
Affiliation
ATC Labs; University of Porto (See document for exact affiliation information.)
Type
Convention Paper