An auditory illusion predicted from a weighted cross-correlation model of binaural interaction.
In humans, the lateral movement of an acoustic source produces dynamic changes in the relative sound-pressure level and time of arrival of the acoustic wave at the 2 ears. The dynamic nature of these cues is assumed to play an important role in the perception of lateral motion. A phenomenon of auditory motion is reported whose lateral direction and relative velocity may be specified while interaural differences are kept constant. The stimulus producing this percept is a narrowband wave-form whose instantaneous bandwidth is a cosine function of time. This phenomenon is predicted from a model of cross-correlation that estimates the running position of an image from a weighted combination of 2 variables: (a) magnitude of interaural delay, with smaller delays receiving more weight, and (b) consistency of interaural information across frequency.
Saberi
K
K
University of Florida, USA.
D001307:Auditory Perception; D003198:Computer Simulation; D006801:Humans; D007088:Illusions; D008144:Loudness Perception; D011571:Psychoacoustics; D013017:Sound Localization