Auditory Representation and Sound Separation

The brain uses several clues for sound separation. Binaural Ilocalization, onsets and common modulation are some of the more important ones. To this end, we have been exploring the use of a perceptually-motivated threedimensional representation of sound called the correlogram. The correlogram represents sound as a moving image of cochlear place (or frequency) and short-time autocorrelation versus time. The result i3 a compelling visualization of sound, which encodes many of the perceptually important clues in a form where these clues are easy to detect.