Left and right
We use our ears in two different ways when determining the direction of sounds we hear. First, we have something called interaural time difference (ITD). When we hear a sound, it reaches both ears. However, it does not reach both ears at the same time. If the source of the sound is to the left of the person, the sound will reach the left ear first and then the right ear. This way, we can tell the sound is coming from the left.
Next, we have interaural level difference (ILD). Again, if we have a sound source to the left, the volume of the sound will be larger when it reaches the left ear than when it reaches the right ear. After all, the volume of sounds will be decreased by the additional distance squared. So, the overall level ...
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