Many problems in the field of acoustic measurements depend on the direction of incoming wave fronts w.r.t. a measurement device or aperture. This knowledge can be useful for signal processing purposes such as noise reduction, source separation, de-aliasing, and super-resolution strategies among others. This paper presents a signal processing technique for the identification of the directions of travel for the principal plane wave components in a sound field measured with a circular microphone array. The technique is derived from a finite rate of innovation data model and the performance is evaluated by means of a simulation study for different numbers of plane waves in the sound field.

Authors: Hoffmann, Falk-Martin; Fazi, Filippo Maria; Nelson, Philip
Affiliation: University of Southampton, Southampton, UK
AES Convention: 140 (May 2016) Paper Number: 9521
Publication Date: May 26, 2016 Import into BibTeX
Subject: Audio Signal Processing: Beamforming, Upmixing, HRTF
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=18220

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