Mechanisms of frequency discrimination.

Difference limens were obtained for the discrimination of pure tones from 62.5 Hz to 12 kHz, and for short pulses from 1 to 4 kHz. In logarithmic coordinates, the data fitted straight lines with different slopes for the high‐frequency, the low‐ and medium‐frequency, and, for pulses, the very low‐frequency ranges. An analysis was made to show that the discrimination of duration and the discrimination of pitch are both based on time‐measuring processes.

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