Maximizing the signal-to-alias ratio in non-uniform filter banks for acoustic echo cancellation

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dc.contributor.authorNongpiur, R. C.
dc.contributor.authorShpak, D. J.
dc.date.accessioned2013-02-12T04:08:50Z
dc.date.available2013-02-12T04:08:50Z
dc.date.copyright2012en_US
dc.date.issued2012-10
dc.description©2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_US
dc.description.abstractA new method for designing non-uniform filter-banks for acoustic echo cancellation is proposed. In the method, the analysis prototype filter design is framed as a convex optimization problem that maximizes the signal-to-alias ratio (SAR) in the analysis banks. Since each sub-band has a different bandwidth, the contribution to the overall SAR from each analysis bank is taken into account during optimization. To increase the degrees of freedom during optimization, no constraints are imposed on the phase or group delay of the filters; at the same time, low delay is achieved by ensuring that the resulting filters are minimum phase. Experimental results show that the filter bank designed using the proposed method results in a sub-band adaptive filter with a much better echo return loss enhancement (ERLE) when compared with existing design methods.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipNSERCen_US
dc.identifier.citationR. C. Nongpiur and D. J. Shpak, “Maximizing the signal-to-alias ratio in non-uniform filterbanks for acoustic echo cancellation,” IEEE Trans. Circuits Syst. I, Reg. Papers, vol.59, pp. 2315-2325, Oct 2012.en_US
dc.identifier.issn1549-8328
dc.identifier.urihttp://hdl.handle.net/1828/4472
dc.language.isoenen_US
dc.publisherIEEE Circuits and Systems Societyen_US
dc.relation.ispartofseriesVolume: 59, Issue: 10en_US
dc.subjectAcoustic echo cancellation, non-uniform filterbanks, sub-band adaptive filteren_US
dc.titleMaximizing the signal-to-alias ratio in non-uniform filter banks for acoustic echo cancellationen_US
dc.typeArticleen_US

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