Abstract
The fusion of two amplitude-modulated (AM)tones presented simultaneously was studied. Subjects were presented with an AM tone (A) followed by a copy of itself (B) which was accompanied by another AM tone (C). In different experiments, the subjects were asked either to rate how clearly they could hear Tone B in the BC mixture or whether Tone B was present or not. The stronger the fusion of Tones B and C, the harder it was to “hear out” Tone B. It was found that fusion was strongest when Tones B and C were modulated at the same rate; segregation curves were obtained for the degree of mismatch of modulation frequency.
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This research was carried out with the assistance of a grant from the Natural Sciences and Engineering Research Council of Canada, and a Killam Research Fellowship, held by the first author. We acknowledge the assistance of Pierre Abdel-Ahad.
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Bregman, A.S., Levitan, R. & Liao, C. Fusion of auditory components: Effects of the frequency of amplitude modulation. Perception & Psychophysics 47, 68–73 (1990). https://doi.org/10.3758/BF03208166
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DOI: https://doi.org/10.3758/BF03208166