Abstract

Smoorenburg and Coninx (1980) investigated the masking of short probe sounds by tone bursts with a sweeping frequency. One of the most remarkable results of their study was that, up to certain sweep speeds, the masked threshold appeared to be higher than the threshold found for stationary maskers. This is in contradiction with current masking theories based on energy detection in critical bands. The aim of the present experiment was to investigate whether this behaviour found for normal- hearing listeners can also be observed for hearing-impaired listeners. Their problems in understanding speech, being a fluctuating sound, against a background of noise, might suggest that the masking of short probe sounds is even greater for those people in the different conditions mentioned.

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