Why is it so difficult to localize sound with only one ear? How does having two ears help to localize sound?
What will be an ideal response?
Answer: Sound is localized in two main ways. One way is through a TIMING DIFFERENCE. For example, if a sound is produced on the right side of the head, the sound will reach the right ear before it reaches the left. The brain can process this time lag, and the sound is perceived correctly as coming from the right. Sound is also localized through an INTENSITY DIFFERENCE. That is, when the same signal coming from the right passes through the head to reach the left ear, the sound intensity is altered. The brain can process this intensity difference, and the sound is perceived, correctly, as coming from the right. Two ears are required to process these differences, and that is why it is difficult to localize sound with only one ear.
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