Abstract
The dynamics of auditory stream segregation were evaluated using repeating triplets composed of pure tones or the syllable /ba/. Stimuli differed in frequency (tones) or fundamental frequency (speech) by 4, 6, 8, or 10 semitones, and the standard frequency was either 250 Hz (tones and speech) or 400 Hz (tones). Twenty normal-hearing adults participated. For both tones and speech, a two-stream percept became more likely as frequency separation increased. Perceptual organization for speech tended to be more integrated and less stable compared to tones. Results suggest that prior data patterns observed with tones in this paradigm may generalize to speech stimuli.
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