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