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DIY Acoustic Camera using miniDSP UMA-16 (2021)
Make your own acoustic camera with miniDSP UMA-16 and Acoular
Given the audio capture, we seek to compute the sound pressure level in each direction. The first attempt was based on ReSpeaker 4 microphone array (~25 USD) with a GCC-PHAT (Generalized cross-correlation) algorithm: In the following video, my iPhone is playing white noise, and the red marker points at the location of maximal sound pressure level:
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