3 ms·
So how does this work? Is it the same as the kind of phase cancellation that you often see with two speakers playing the same tone, but just with lots of elemen
by noodlesUK 2y ago
So how does this work? Is it the same as the kind of phase cancellation that you often see with two speakers playing the same tone, but just with lots of elements (and an ultrasonic source)?
- nihzm 2y agoAs far as I understand yes, I would also guess that it is analogous to a phased array antenna, but with sound waves
- jamal-kumar 2y agoIt's a sound laser, or maybe I'm remembering the video in this link wrong on the terminology and the SASER is different? Maybe it's just "sound from ultrasound" https://en.wikipedia.org/wiki/Phonon https://en.wikipedia.org/wiki/Phonon https://en.wikipedia.org/wiki/Sound_amplification_by_stimulated_emission_of_radiation https://en.wikipedia.org/wiki/Sound_amplification_by_stimula... https://www.youtube.com/watch?v=aBdVfUnS-pM https://www.youtube.com/watch?v=aBdVfUnS-pM https://en.wikipedia.org/wiki/Sound_from_ultrasound https://en.wikipedia.org/wiki/Sound_from_ultrasound
- aidenn0 2y agoThis is not a sound laser; the beam has some similar properties to a laser (e.g. collimation), but it works more like a directional antenna.
- jamal-kumar 2y agoYeah I think you're correct. Really interesting distinction
- deleted 2y ago[deleted]
- night862 2y agoIts quite interesting. The directional ultrasonic array broadcasts a carrier frequency, not unlike am radio. You can read about the function of this sort of device at hackaday. https://hackaday.com/2019/02/14/creating-coherent-sound-beams-easily/ https://hackaday.com/2019/02/14/creating-coherent-sound-beam...