The effect of marker parameters on gap discrimination
Keywords:
hearing, marker rise, marker decay, marker parameters, gap discrimination, normal-hearing listeners, marker frequency, 500 Hz, 4000 Hz, 5 to 100 msAbstract
A preliminary investigation was conducted of the effects on gap discrimination of variation in marker rise/decay, in combination with other marker parameters. Three well-practised normal-hearing listeners participated. In each, the just noticeable increment (?t) was measured for silent gaps of 10, 20 and 100 ms, within the context of 16 different marker conditions. These reflected variations in bandwidth (octave and 1/3 octave), centre frequency (500 and 4000 Hz) intensity (75 and 85 dB SPL) and rise/decay time (5, 25 and 50 ms). The results showed that ?t increased significantly with an increase in rise/decay time. Marker intensity and bandwidth had no effect. Discrimination improved with an increase in marker frequency only for the longest gap, given the shortest rise/decayDownloads
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