Low-frequency signals support perceptual organization of implant-simulated speech for adults and children.

ABSTRACT:

Objective

Using signals processed to simulate speech received through cochlear implants and low-frequency extended hearing aids, this study examined the proposal that low-frequency signals facilitate the perceptual organization of broader, spectrally degraded signals.

Design

In two experiments, words and sentences were presented in diotic and dichotic configurations as four-channel noise-vocoded signals (VOC-only), and as those signals combined with the acoustic signal below 0.25 kHz (LOW-plus). Dependent measures were percent correct recognition, and the difference between scores for the two processing conditions given as proportions of recognition scores for VOC-only. The influence of linguistic context was also examined.

Study sample

Participants had normal hearing

SUBMITTER: Nittrouer S 

PROVIDER: S-EPMC3954900 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature