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Journal Article

Fractional Delay in the Frequency Domain for Beamforming Applications

Authors: Sanchez-Bote, Jose-Luis; Gomez-Alfageme, Juan-Jose

Journal of the Audio Engineering Society · Volume 58 · Issue 3 · pp. 160–172 · March 2010

Abstract

Real-time processing of audio signals in microphone and loudspeaker arrays often requires the implementation of fractional delays. The proposed methods are particularly relevant in applications that use windowing and frequency transforms. The short-time spectrum can be modified to obtain the equivalent delay. Various approaches to the problem are discussed and evaluated in the context of beamforming precision resulting from time-alignment errors.

Details

Publication
Journal of the Audio Engineering Society
Volume
58
Issue
3
Pages
160–172
Publication date
March 6, 2010
Affiliation
Department of Audiovisual Engineering and Communications, DIAC-E.U.I.T. Telecomunicación, Universidad Politécnica de Madrid, 28031 Madrid, Spain (See document for exact affiliation information.)
Type
Journal Article