3D Localization of Speech by Mildly and Moderately Hearing-Impaired Persons in Ecological Environments
* Presenting author
Studies about 3D audio perception with hearing devices are sparse. There are a number of studies on localization on the horizontal plane, but none about localization in elevation. In this study, 20 hearing-impaired subjects took part in a 3D localization test. Participants had to point their head in the direction of various target stimuli. These stimuli were generated by convolving a speech signal with 4th HOA room impulse responses recorded with an Eigenmike. 4th order HOA background audio recordings were played in addition to the target in order to reproduce realistically difficult environments. In total, 32 different directions were generated for both a noisy restaurant and a busy street background sounds. Three different hearing device beamformers were compared along with an unaided condition.