Saturday, June 5, 2021

What is Audio Zoom for smartphones?


Just noticed my Google Pixel has a toggle under camera settings for "audio zoom" - here's how it functions. 
"This highly-directional result using non-directional receivers is achieved by setting different gains on each microphone depending on its position in the device, and then constructively adding the phase for frontal waves (to enhance the desired sound) and destructively for side waves (to attenuate off-axis interference)."

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