Temporally jittered speech produces PI-PB rollover in young normal-hearing listeners
Keywords:Audition, Bandwidth, Biological organs, Computer simulation, Fast Fourier transforms, Jitter, Signal to noise ratio, Auditory system, Neural asynchrony, Performance intensity phonetically balanced rollover, Uncomfortable listening level
AbstractThe question of whether or not temporal jitter simulates neural asynchrony in young, normal hearing listeners was addressed by temporally jittering word discrimination lists and presenting them to young adults with normal hearing to see if they will show performance-intensity phonetically balanced (PI-PB) rollover. Speech discrimination scores were measured for each of the 16 participants using intact NU6, jittered NU6 and jittered W22 word lists presented at four levels, 40, 55, 65, and (UCL-5) dB HL, denoted respectively as Level 1, Level 2, Level 3, and Level 4. The results are analyzed in detail.
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