Steve - I would think that you would want to replace and even improve upon
the original sound isolation materials in the Electrovert even if there were
indeed a "magic" box (which there isn't).  There are many newer types of
foam insulation such as composites with a lead or other high mass material
backing.  Start with the least amount of intrusive sound in the workplace.
FYI the white noise solution, as pointed out, will not work in a high noise
level environment.  It is a common technique used in low noise environments
such as large open offices or cubie farms.  Low level white noise on a
distributed sound system will mask the sound of your neighbor's phone
conversation or his crappy radio station without actually being apparent.
John Thorup
> -----Original Message-----
> From: Stephen R. Gregory
> Sent: Friday, May 12, 2000 6:27 PM
> To:   [log in to unmask]
> 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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