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Conference Paper

Teleconference Application and B-Format Microphone Array for Directional Audio Coding

Authors: Ahonen, Jukka; Pulkki, Ville; Lokki, Tapio

AES Conference: 30th International Conference: Intelligent Audio Environments · Paper 28 · March 2007

Abstract

A teleconferencing application of Directional Audio Coding (DirAC) is presented. DirAC is a method for spatial sound recording and reproduction with arbitrary number of loudspeakers or with headphones. In telecommunication it can be used to deliver spatial sound by transmitting directional data as a side band to monophonic audio with low bit rate. In this work a C programming language implementation of DirAC for teleconference applications has been developed. Also, a low-cost B-format microphone array composed of miniature microphones for spatial sound capturing for DirAC encoding
is presented and compared with Soundfield ST350 microphone.

Details

Published in
AES Conference: 30th International Conference: Intelligent Audio Environments
Paper number
28
Publication date
March 6, 2007
Session subject
Intelligent Audio Environments
Affiliation
TKK (See document for exact affiliation information.)
Type
Conference Paper