Frequency discrimination as a function of frequency and sensation level

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Abstract
Frequency discrimination was measured for frequencies from 200-8000 Hz and for sensation levels from 5-80 dB using pulsed sinusoids as stimuli in an adaptive 2-interval force-choice psychophysical procedure. An analysis of variance indicated significant effects of frequency and sensation level, and of the interaction between frequency and sensation level. The effect of sensation level was greatest at low frequencies and decreased at high frequencies, being quite small at 8000 Hz. The data were used to evaluate the predictions of current theoretical models.

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