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Icsa 2017
Sep 7th to 10th, 2017
Graz, Austria

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ICSA 2017 4th International Conferenceon Spatial Audio | September 7th to 10th, 2017, Graz, Austria #vdticsa

Effect of 2D ambisonics order on speech intelligibility with closely spaced talkers

Sound field reproduction techniques, like higher-order ambisonics (HOA), have recently seen increasing use in hearing research. However, the perceptual accuracy of these methods, in particular regarding speech intelligibility, remains unclear. Previous research has shown that low-order ambisonics leads to decreased localization accuracy and perceptually broader sources. This spatial broadening could lead to a reduced ability to separate target and interfering speech. We investigated the effect of 2D ambisonics order on speech intelligibility of a target and two interfering talkers separated by ±15°. While HOA order clearly affects some aspects of spatial perception, no systematic effect on speech intelligibility was found. In anechoic conditions, first order ambisonics appears to provide enough information to the auditory system to effectively separate the talkers.