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Convention Paper

Spatial B-Format Equalization

Authors: Favrot, Alexis; Faller, Christof

AES Convention 147 · Paper 10293 · October 2019

Abstract

Audio corresponding to the moving picture of a virtual reality (VR) camera can be recorded using a VR microphone. The resulting A or B-format channels are decoded with respect to the look-direction for generating binaural or multichannel audio following the visual scene. Existing post-production tools are limited to only linear matrixing and filtering of the recorded channels when only the signal of a VR microphone is available. A time-frequency adaptive method is presented: providing native B-format manipulations, such as equalization, which can be applied to sound arriving from a specific direction with a high spatial resolution, yielding a backwards compatible modified B-format signal. Both linear and adaptive approaches are compared to the ideal case of truly equalized sources.

Details

Published in
AES Convention 147
AES Convention
147
Paper number
10293
Publication date
October 6, 2019
Session subject
Spatial Audio, Part 3
Affiliation
Illusonic GmbH, Uster, Switzerland (See document for exact affiliation information.)
Type
Convention Paper