Abstract
A recent study showed that when a sound mixture has ambiguous spectrotemporal structure, spatial cues alone are sufficient to change the balance of grouping cues and affect the perceptual organization of the auditory scene. The current study synthesizes similar stimuli in a reverberant setting to see whether the interaural decorrelation caused by reverberant energy reduces the influence of spatial cues on perceptual organization. Results suggest that reverberant spatial cues are less influential on perceptual segregation than anechoic spatial cues. In addition, results replicate an interesting finding from the earlier study, where an ambiguous tone that could logically belong to either a repeating tone sequence or a simultaneous harmonic complex can sometimes "disappear" and never be heard as part of the perceptual foreground, no matter which object a listener attends. As in the previous study, the perceived energy of the ambiguous element does not "trade" between the objects in a complex scene (i.e., the element does not necessarily contribute more to one object when it contributes less to a competing object). Results are consistent with the idea that the perceptual organization of an acoustic mixture depends on what object a ...Continue Reading
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