A sound coming from your left will reach your left year faster and with more intensity than your right year. Your brain can use these two facts to compute the location of the sound's source.

Question

Quizplus · Accepted Answer

This is known as the "acoustic shadow" effect, which occurs because the sound waves must travel through or around the head to reach each ear, causing a difference in arrival time and intensity. The brain uses these differences to determine the sound's location.

A Sound Coming from Your Left Will Reach Your Left