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Not quite the same thing though. These systems are active. They have sound being produces most likely at a very specific frequency and then listened for so that
by space_fountain 10y ago
Not quite the same thing though. These systems are active. They have sound being produces most likely at a very specific frequency and then listened for so that depth information can be gathered. This instead images the sound that's already out there in the light. It's the difference between lidar and a camera
- moheeb 10y agoSounds to me more like the difference between using the flash or not.
- eric_h 10y agoSort of, except the "camera" can't make any use of "light" generated by anything other than the flash.
- wbeaty 10y agoNope, theirs is the sound-camera, detector array and sound-lens, but with an acoustic floodlight. I think they do use ranging though, so the 2D image is "sound camera" in one raster dimension, and "sonar range" in the other.