[papertokyo]

No. These machines sound like robot hornets operating dental drills.

[askvictor]

I thought ultra sonic was defined as being above the sonic range of humans. Genuine question: why would an ultrasonic noise generator create sound audible frequencies? Can it not provide enough power without doing so?

[thsksbd]

Ultrasonicators for the purpose of cavitation research are insanely powerful and non linear material response cause all sorts of vibrational modes to boom.

Its unpleasant.