Comparison of monaural and binaural discrimination of intensity and frequency

Abstract

Intensity and frequency discrimination were measured at three signal frequencies for stimuli presented (1) binaurally, in phase, (2) monaurally, to the left ear, and (3) monaurally, to the right ear. The binaural difference limens (DL’s) are uniformly smaller than the monaural DL’s for both intensity and frequency discrimination at all frequencies. The size of the effect is within the range that is predicted by either an information-integration or an independent-threshold model.