The human hearing system is more complex than a basic stereo spaced mic array, our ears can resolve sound not only in two dimensions but also in three dimensions. Our ear pinna directs sound into our ear canal by filtering it in numerous ways based on the angle of sound that travels or passes. This is how we can tell how sound is approaching us. Our ear drums function as an omnidirectional microphone that is activated by pressure. The stereo recording forms/creates binaural recordings using the mechanics of human hearing. To transmit location information, spaced arrays rely on the possibility of time differences taken for sound to arrive on two microphones, as opposed to coincident arrays such as mid side and XY, where sound always arrives on two mics at the same moment. Because humans have both ears on both sides of our head, our hearing range is equivalent to that of a spaced omni stereo mic array. We can tell if the sound is coming from directly in front or from behind because our ears behave as spaced array stereo microphones, taking up sound that comes on both ears simultaneously (Korff, 2021).
Bibliography
Korff, C., 2021. An Introduction To Binaural Recording. [online] Soundonsound.com. Available at: https://www.soundonsound.com/techniques/introduction-binaural-recording
[Accessed 19 May 2022].
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