Wave interference at the contralateral ear helps explain non-monotonic envelope interaural time differences as a function of azimuth.
JASA Express Lett
; 3(3): 034403, 2023 03.
Article
en En
| MEDLINE
| ID: mdl-37003716
ABSTRACT
Interaural time differences (ITDs), an important acoustic cue for perceptual sound-source localization, are conventionally modeled as monotonic functions of azimuth. However, recent literature and publicly available databases from binaural manikins demonstrated ITDs conveyed by the envelopes (ENV-ITDs) of high-frequency (≥2 kHz) signals that were non-monotonic functions of azimuth. This study demonstrates using a simple, time-dependent geometric model of an elliptic head that the back-traveling (longer) sound path around the head, delayed and added to the conventionally treated front-traveling path, can account for non-monotonic ENV-ITDs. These findings have implications for spatial-hearing models in acoustic and electric (cochlear-implant) hearing.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Localización de Sonidos
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
JASA Express Lett
Año:
2023
Tipo del documento:
Article
País de afiliación:
Estados Unidos