You can make a pretty good white noise generator yourself by turning on your Tele  or radio and
pulling the aerial  (antenna) out or tuning to a non existent station. Hard to see how this
would rationally make any [positive]difference to the actual measured noise on the shop floor.
Maybe this is the occasion when you should try this at home..

But perception is what we are talking about not objective measurement.   The only use I know of
for white noise in this sort of context is trials done with tinitus sufferers: noticeable
improvement has been reported by sufferers of this condition by playing low levels of white
noise directly into their ears.Maybe your colleague has read of this or something somewhere.


Mike

----- Original Message -----
From: Stephen R. Gregory <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, May 13, 2000 2:27 AM
Subject: [TN] Noise suppression using "white noise"...


> Hi ya'll!!
>
> This post may be a little strange, but I'll ask anyway. We're getting ready
> to put a used Electrovert H-500 out on our floor. We currently have a old
> Hollis Poly-clean. When you look at the blowers on a Poly-Clean compared to
> the blowers on the H-500, the H-500's blowers look about twice as big...and
> the Hollis is kinda' loud...but people don't complain too much when it's
> running...I don't know about the H-500 though.
>
> The sound suppresion foam on the inside of the H-500 needs replacing, it's
> deteriorated quite a bit. But there's a person here that is suggesting that
> instead of replacing the foam, look into "white noise" generators. This
> person says that when they were in a machine shop environment, "white noise
> generators" were amazing as far as lowering the decible level of the machines.
>
> I have to plead ignorance on this subject. Do any of you have any knowledge
> about this? Or have any first hand experience with "white noise generators"?
>
> Myself, I think we should just replace the sound suppression foam, but this
> person swears that "white noise generators" is the way to go (but they can't
> tell me where I can find this stuff)...if that is true, where do I go to get
> these generators (speakers and certain frequency sources I assume)? Is there
> such equipment? I've searched the web, but can't find anybody that sells this
> stuff (makes me more confidant that I should just replace the sound
> suppresion foam).
>
> Is this just a bunch of gobble-dee-gook or what?
>
> -Steve Gregory-
>
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