Lateralization and interaural correlation
Irwin W. Pollack · The Journal of the Acoustical Society of America · 1990
The lateralization of ongoing interaural delays for broadband noise is necessarily related to the interaural correlation of the noise. (Ongoing delays between independent noise sources cannot be defined. Thresholds for interaural delays may be obtained by simply manipulating the interaural correlation.) A possible interpretation of the poorer lateralization at long interaural delays is that the interaural correlation of the presented signal is reduced, perhaps as the result of greater internal noise associated with longer delays. A weak test of this interpretation is to examine the discrimination of interaural correlations at different interaural delays. The course of discrimination thresholds for interaural correlation closely follows the course of thresholds for longer interaural delays.