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Analysis and fast implementation of oversampled modulated filter banks

Weiss, Stephan (2002) Analysis and fast implementation of oversampled modulated filter banks. In: Mathematics in signal processing V. Institute of Mathematics and ITS applications conference series . Clarendon Press, Oxford, pp. 263-274. ISBN 0198507348

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Abstract

Oversampled modulated filter banks (OSFBs) are popularly employed for a number of applications such as acoustic echo cancellation in order to reduce the processing complexity of a signal processing algorithm. Hence, an efficient implementation of OSFBs themselves is mandatory. In this paper, a polyphase description is used to remove redundancies in the filter operations and to factorize the OSFB into filter components depending on the prototype filter, and the modulating transform. Based on a state-space representation of this derived polyphase factorization, signal flow graphs can be obtained which permit a very simple and efficient OSFB implementation. The analysis is performed for a number of different classes of OSFBs, and a comparison to existing methods is drawn.

Item type: Book Section
ID code: 32758
Keywords: oversampled filter banks , filter banks, acoustic echo cancellation, fast implementation, analysis, oversampled, modulated filter banks, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 31 Aug 2011 14:54
Last modified: 06 Sep 2014 07:01
URI: http://strathprints.strath.ac.uk/id/eprint/32758

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