How do we know if a sound is above, below, in front or behind of us if our ear canals are essentially just little holes in our head?
In: Biology
You have hears that is not symmetrical. They will change the sound slightly and the change depends on the direction and frequency of the sound. The rest of the head and body also changes sound depending on direction.
A simple beep from an electronic device or just a single tone is a lot harder to intensify the direction of the speaker with music for just that reason.
In some counties the back warning of trucks start to be white noise instead of a beep because it is a lot simple to identify the direction
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