> For example at 10Khz the wavelength is far too short for 'phase' to impact arrival time.
It's the time-of-flight difference between when the one ear receives the wave front and the other from a change in the sound that gives us the directional information.
Absent any change all we have to go on is volume so we rotate our heads to the point where both ears receive the signal equally strong, then the source is somewhere in the plane that bisects the head of the listener.
Rotating one ear forward gives us the clue about whether the sound source is in front of us or behind us. (Fails to work when it is directly overhead.)
It's the time-of-flight difference between when the one ear receives the wave front and the other from a change in the sound that gives us the directional information.
That's part of it, the other part is the head related transfer function is the change in response of sound due to diffraction effects caused by the head, upper torso and pinnae. The pinnae also help us to judge elevation.
It's the time-of-flight difference between when the one ear receives the wave front and the other from a change in the sound that gives us the directional information.
Absent any change all we have to go on is volume so we rotate our heads to the point where both ears receive the signal equally strong, then the source is somewhere in the plane that bisects the head of the listener.
Rotating one ear forward gives us the clue about whether the sound source is in front of us or behind us. (Fails to work when it is directly overhead.)