Getting esoteric on infrasound Re: [sdiy]

[Magnus Danielson]

From: Cynthia Webster <cynthia.webster at gte.net>
Subject: Getting esoteric on infrasound Re: [sdiy]
Date: Sun, 21 Apr 2002 21:24:16 -0700

> 
> Getting esoteric on infrasound
> 
> So at what point is it no longer sound?
> Is that when the movement of air is exchanged for the movement of earth?

No, the word "sound" is very generic, ranging from slow movements up
to GHz of waves. It's even commodity to have tens of MHz sound stuff
at home. Got a computer? It's right there... crystal oscillators,
SAW-filters etc.

What you maybe was striving for was a definition when it is not audio,
and that is clearly when it is not audioble.

Cheers,
Magnus