PS262 Chapter Notes - Chapter 12: Sound Localization, Interaural Time Difference, Acoustic Shadow
Document Summary
Locating sounds, especially ones that might signal danger, can be important for survival: sounds and locations are constantly structuring our auditory environment. Auditory localization: sounds at different locations create an auditory space, which exists all around, wherever there is sound (auditory space = perception of where sounds are located in space. This reduction of intensity occurs for high frequency sounds: acoustic shadow the shadow created by the head that decreases the level of high frequency sounds on the opposite side of the head. The acoustic shadow is the basis of the localization cue of interaural level difference, but not for low frequency sounds. Interaural time difference (itd: the time different between when a sound reaches the left ear and when it reaches the right ear. If the source is located directly in front of the listener, the distance to each ear is the same; the sound reaches the left and right ears simultaneously, so the itd is zero.
