Scientists have unlocked a previously unseen behavior of acoustic waves, opening up new possibilities for cutting-edge ...

This means that they do not have a regular repeating pattern, rather, they have a very random pattern ... On a waveform, this would be highlighted by a periodic sound wave. On a spectrogram, there are ...

Turbulence can also occur in sound waves that propagate chaotically in ... it has been nearly impossible to predict the propagation patterns of nonlinear (i.e., chaotically moving) acoustic ...

Well, it's all to do with the strength of the vibration. A weak vibration makes a gentle sound wave which doesn't travel very far. Be quiet! A vibration with lots of energy makes a very powerful wave.