Re: [ST] RE: LABiker: Earplug memo outline

[Bil Swartz <bil@xxxxxxxxxx>]

On Mon, 4 Nov 2002, Rick Damiani wrote:

> Note: This should mention not only the overall dB reduction, but also the
> frequencies that the reduction takes place at. what we want to prove is that
> expensive custom plugs and cheap foam plugs are equally as good at letting
> sirens be heard as they are at blocking unwanted noise.
> 
> Guess I found me a project...

That shouldn't be hard, as those that make the plugs can tell you what
their reduction is.  I guess it varies a little by maker and materials
used, but the folks that made my wife's customs at a Cycleworld show for
about $45 said the reduction was about 28-30dB, which is in the same range
that the cheap LaserLite plus I use is.  The green LaserLite's are 26 or
28 I think, and the yellow and red ones are 33 I think.  

FWIW, HIH.

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