Interaural time differences are computed by cross-correlating the two ear signals
Evidence
Such processing can be elegantly emulated by computing the normalized interaural crosscorrelation (IACC) (Sayers and Cherry, 1957) where t is time, Ο is the interaural delay, t denotes the length of the integration window, and xl and xr are the signals from the left and right ears, respectively. An estimate of the ITD is then obtained as the interaural delay corresponding to the maximum of the IACC function. β Ville Pulkki, Matti Karjalainen, Communication Acoustics- Anβ¦, 1666
Categorization
- DEFINE: Explains how IACC computation emulates the Jeffress coincidence-detection model to extract ITD cues.
- XREF: connects to: Directional hearing rests on interaural time and intensity differences. β David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 704