Suppression in simultaneous masking

Abstract
Suppression, i.e., the decrease of masked threshold caused by the addition of a 2nd masker M2 to a 1st masker M1, was measured for the case of simultaneous masking [in humans]. The magnitude of suppression decreases with increasing test tone duration; pulsed maskers elicit somewhat more suppression than continuous maskers. In comparison to suppression effects obtained in nonsimultaneous masking (post-masking, pulsation threshold) suppression in simultaneous masking was considerably smaller and was found only at the lower slopes of the 2 maskers. Suppression in simultaneous masking would not be predicted by those models of suppression which require nonsimultaneous presentation maskers and test sound.

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