Roughly, I think that's what the optics are doing. The higher-FOV sensors are short, while variants that have smaller FOVs like this use a long tube. Also of n

Roughly, I think that's what the optics are doing. The higher-FOV sensors are short, while variants that have smaller FOVs like this use a long tube. Also of note, you can get directionality from microphones by using arrays configured in various ways, that take advantage of interference. For example, 2 microphones, with the front summed with the inverted rear delayed by the dist sound takes to travel between the 2. There are caveats to this, like non-uniform freq response. Radars do this for transmitting RF energy; I'm curious if this could be employed in a camera.