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Convention Paper

Microphone Front-Ends for Spatial Audio Coders

Authors: Faller, Christof

AES Convention 125 · Paper 7508 · October 2008

Abstract

Spatial audio coders, such as MPEG Surround, have enabled low bitrate and stereo backwards compatible coding of multi-channel surround audio. Directional audio coding (DirAC) can be viewed as spatial audio coding designed around specific microphone front-ends. DirAC is based on B-format spatial sound analysis and has no direct stereo backwards compatibility. We are presenting a number of two capsule based stereo compatible microphone front-ends and corresponding spatial audio coder modifications which enable the use of spatial audio coders to directly capture and code surround sound.

Details

Published in
AES Convention 125
AES Convention
125
Paper number
7508
Publication date
October 6, 2008
Session subject
Audio Coding
Affiliation
Illusonic (See document for exact affiliation information.)
Type
Convention Paper