2 ms·

There have been some projects to make “sonic cameras” using MEMS mic arrays that this reminds me of. https://hackaday.com/2020/08/10/acoustic-camera-uses-many-m

• belzebalex 6y ago
  The maths is exactly the same, except that the beamforming is at the reception rather than at the emission. But it works based on the same principle.