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Using spaced microphones with directional audio coding

: Laitinen, M.-V.; Kuech, F.; Pulkki, V.

Audio Engineering Society -AES-:
130th Audio Engineering Society Convention 2011. Vol.2 : London, United Kingdom, 13 - 16 May 2011
Red Hook, NY: Curran, 2011
ISBN: 978-1-61782-925-3
Audio Engineering Society (Convention) <130, 2011, London>
Conference Paper
Fraunhofer IIS ()

Directional audio coding (DirAC) is a perceptually motivated method to reproduce spatial sound, which typically uses input from first-order coincident microphone arrays. This article presents a method to additionally use spaced microphone setups with DirAC. It is shown that since diffuse sound is incoherent between spatially separated microphones at certain frequencies, no decorrelation in DirAC processing is needed, which improves the perceived quality. Furthermore, the directions of sound sources are perceived to be more accurate and stable.