Abstract
Two experiments were conducted to evaluate frequency resolution and speech discrimination in a group of seven subjects with nearly equivalent flat, sensorineural hearing losses. In experiment 1, percent correct detection of a 2000‐Hz tone was measured as a function of notch width in band‐reject noise. In experiment 2, percent correct discrimination of synthetic speech syllables differing in spectral content in the 2000‐Hz region also was evaluated as a function of notch width in the same band‐reject noise. Two indices were determined from the percent correct functions obtained in each experiment: (1) the rate at which performance improved as notch width increased, and (2) the notch width at which 100% detection or discrimination occurred. Correlations among the four indices were computed. Moderate correlations were observed between tone detection and speech discrimination in notched noise. [Work supported by NIH and PHS.]
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