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Conference Paper

Microphone Configurations for Teleconference Application of Directional Audio Coding and Subjective Evaluation

Authors: Ahonen, Jukka

AES Conference: 40th International Conference: Spatial Audio: Sense the Sound of Space · Paper P-5 · October 2010

Abstract

Directional Audio Coding (DirAC) is a spatial-sound processing technique, where the arrival direction and diffuseness of sound are analyzed in frequency-bands from microphone signals, transmitted with one or multiple audio channels, and utilized for various purposes in synthesis. Among other applications, DirAC has been used in low bit-rate teleconferencing to provide spatial separation of remote talkers corresponding to reality. Here, the use of different microphone configurations, consisting of omnidirectional or directional microphones, is discussed in DirAC teleconferencing. The audio quality with different microphone techniques for DirAC teleconferencing is evaluated by the subjective listening tests, and the results are presented in this paper.

Details

Published in
AES Conference: 40th International Conference: Spatial Audio: Sense the Sound of Space
Paper number
P-5
Publication date
October 6, 2010
Session subject
Spatial Audio
Affiliation
Aalto University School of Science and Technology, Aalto, Finland (See document for exact affiliation information.)
Type
Conference Paper