3 ms·
My intuition tells me this just doesn't hold water with respect to information theory.. i.e. the number of bits of useful information about a finger you can pul
by nly 11y ago
My intuition tells me this just doesn't hold water with respect to information theory.. i.e. the number of bits of useful information about a finger you can pull from a microphone. Putting aside human digits, has anyone even demonstrated that you can reliably detect an eighteen-wheeler rig moving toward a phone with this technique? And what about the range of the speaker? Complete nonsense.
- et2o 11y agoAre you suggesting the video is fake? I think your intuition is wrong. To address your comment more directly, I don't see any information theory type limit immediately applicable here for finding xyz coordinates using echolocation. That's done in a variety of contexts.
- candu 11y agoYour intuition is probably wrong: off-the-shelf consumer-grade microphones can typically gather 44.1-96k samples per second at 16-24 bits per sample. That's a lot of potential information. Also, consider that your ear/brain apparatus estimates object positions and occlusions from audio signals all the time. Also also, the eighteen-wheeler problem is vastly different from the finger problem, as the latter is smaller, slower, and closer to the microphone, each by 1-2 orders of magnitude.
- rhema 11y agoFrom an information theory perspective, think about the number of samples. Even 22Khz yields a tremendous number of individual points.