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Convention Paper

Localization in Horizontal-Only Ambisonic Systems

Authors: Benjamin, Eric; Heller, Aaron; Lee, Richard

AES Convention 121 · Paper 6967 · October 2006

Abstract

Ambisonic reproduction systems are unique in their ability to separately reproduce the pressure and velocity components of the recorded audio signals. Gerzon proposed a theory of localization[1,2] in which the human auditory system is presumed to localize using the direction of the velocity vector in the reproduced sound at low frequencies, and the energy vector at high frequencies. An Ambisonic decoder has the energy and velocity vectors coincident. These are the directions of the apparent source when the listener can turn to face it. [2] Separately maximizing the low-frequency and mid/high-frequency operation of the reproduction system can optimize localization where the listener cannot turn to face the apparent source. We test the localization of horizontal-only Ambisonic reproduction systems using various narrow-band test signals to separately evaluate low-frequency and mid-frequency localization.

Details

Published in
AES Convention 121
AES Convention
121
Paper number
6967
Publication date
October 6, 2006
Session subject
Multichannel Sound
Affiliation
Consultant; Dolby Laboratories; SRI International (See document for exact affiliation information.)
Type
Convention Paper