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
Subject:
Audio Signal Processing: Beamforming, Upmixing, HRTF
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