[LAD] Audio Levitation

Charles Z Henry czhenry at gmail.com
Fri Jan 3 23:01:33 UTC 2014

On Fri, Jan 3, 2014 at 4:03 PM, Charles Z Henry <czhenry at gmail.com> wrote:

> Why do we see this technique applied with high frequencies?  At the node
> locations, there is the highest peak spatial derivative of the pressure
> while at the same time, the volume velocity of air goes to 0.
> Vice-versa at the anti-nodes.

I got that wrong:
The peak pressure difference occurs where the volume velocity is zero.
The location of the peak spatial derivative of pressure coincides with the
location of peak volume velocity.
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