[ARC5] ARR-3 Question

[Tom Lee]

There is a surprising amount of high-frequency content. I’ve been told that there are micro bubbles that form and pop with great suddenness, generating a rich, high-frequency hash that helps the signal to pop out above all the other noise.

—Cheers
Tom

Sent from my iThing, so please forgive typos and brevity.

> On Feb 10, 2021, at 11:40 AM, Hubert Miller <Kargo_cult at msn.com> wrote:
> 
> 
> Well, how interesting. I would have thought the sonobuoy pickup were all low frequency sounds.
> I think I recently read, in a book about the Battle of Atlantic, the 'propeller cavitation sounds' were
> up around 17,000 Hz ?
> Lacking smarter inputs, I would have guessed it was some kind of contractual moneymaker.
> -Hue
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