From Wikipedia, the free encyclopedia Dichotic pitch
Dichotic pitch
When continuous white noise (with a frequency content characterized by three perceptual properties: pitch val-
below about 2000 Hz) is presented by headphones to the ue, timbre, and in-head position (lateralization). Experi-
left and right ear of a listener, and given a particular in- ments on dichotic pitch were motivated in the context of
teraural phase relationship between the left and right ear the study of pitch in general, and of the binaural system
signals, a sensation of pitch (psychophysics) may be ob- in particular, relevant for sound localization and separa-
served. Thus, stimulation of either ear alone gives rise to tion of competing sound sources (see cocktail party ef-
the sensation of white noise only, but stimulation of both fect). In the past, various configurations of dichotic pitch
ears together produces pitch. Therefore, as a special case were studied and several auditory models were devel-
of dichotic listening, such a pitch is called dichotic pitch oped. The great challenge for psychophysical and phys-
or binaural pitch. Generally, a dichotic pitch is perceived iological acoustics is to predict both the pitch value and
somewhere in the head amidst the noisy sound filling the pitch-image position in one model. For more informa-
binaural space. To be more specific, the dichotic pitch is tion, references, audio demos etc. see more.
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Categories:
• Hearing
• Audiology
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