TITLE

Broadband Auditory Stream Segregation by Hearing-Impaired and Normal-Hearing Listeners

AUTHOR(S)
Valentine, Susie; Lentz, Jennifer J.
PUB. DATE
October 2008
SOURCE
Journal of Speech, Language & Hearing Research;Oct2008, Vol. 51 Issue 5, p1341
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Purpose: To investigate the effects of hearing loss on auditory stream segregation of broadband inharmonic sounds. Method: Auditory stream segregation by listeners with normal and impaired hearing was measured for 6-component inharmonic sounds ("A" and "B") using objective and subjective methods. Components in the A stimuli ranged between 1000 and 4000 Hz, whereas B stimuli were generated at the same frequency ratio but scaled upward in frequency relative to the A stimuli. In Experiment 1, streaming was measured by having listeners detect a delay inserted into a sequence of A and B stimuli (A_B_A_B_...) for B stimuli with different frequencies. In Experiment 2, streaming was measured using an ABA_ABA_… sequence, and the frequency of the B stimulus decreased until listeners reported that they could "no longer hear two separate streams." Results: Experiment 1 indicated no significant differences between groups in the size of the just detectable delay and no significant interactions between group and the scaling factor between the B and A stimuli. Experiment 2 revealed no significant differences in streaming abilities between normal-hearing and hearing-impaired groups. Conclusions: Overall, results indicate that listeners with normal and impaired hearing have similar auditory streaming abilities for broadband inharmonic complex stimuli.
ACCESSION #
34789899

 

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