PSYC 369 Chapter Notes - Chapter 12: Sound Localization, European Credit Transfer And Accumulation System
19 Oct 2015
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Document Summary
Interaural time difference (itd): difference between when a sound reaches the left ear and when it reaches the right ear. If source is located directly in front of listener, distance to each ear is the same (reaches both ears simultaneously), so itd is zero. If source is located to the side, the sound reaches the right ear (for example) before the left ear. Itd becomes louder are sources are located more to the side, so magnitude of itd can be used as a cue to determine sound"s location. Itd is an effective cue for localizing low-frequency sounds. The three curves indicate interaural level difference (ild) as a function of frequency for three different sound-source locations. Note that the difference in ild for different locations is greater at higher frequencies. Itd and ild complement each other itd provides info about location of low- frequency sounds and ild provides info about high-frequency sounds.
