A time-frequency-domain non-linear parametric method for spatial audio processing is presented here, which can utilize microphone input having directional patterns of any order. The method is based on dividing the sound field into overlapping or non-overlapping sectors. Local pressure and velocity signals are measured within each sector, and an individual Directional Audio Coding (DirAC) processing is performed for each sector. It is shown, that in certain acoustically complex conditions the sector-based processing enhances the quality compared to traditional first-order DirAC processing.

Authors: Pulkki, Ville; Politis, Archontis; Del Galdo, Giovanni; Kuntz, Achim
Affiliations: Aalto University, Aalto, Finland; Ilmenau University of Technology, Ilmenau, Germany; Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany(See document for exact affiliation information.)
AES Convention: 134 (May 2013) Paper Number: 8920
Publication Date: May 4, 2013
Subject: Spatial Audio

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