So does this mean you've got the the wrong stuff, or that we've all got the=
wrong stuff?=0D
=0D
How do I make this measurement? If I record a sound source with and without=
it covered by the small piece I have, won't I pick up lots of reflected so=
und from other directions?=0D
=0D
Peter Shute=0D
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Sent using BlackBerry=0D
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________________________________=0D
From: =0D
To: =0D
Sent: Fri Jul 13 09:13:09 2012=0D
Subject: [Nature Recordists] Re: Foam for SASS=0D
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Hmmm. By this test, my green foam fails. Using a SPL meter, I am measuring =
about 1dB per inch attenuation of a 2 kHz signal. Maybe I need to keep look=
ing for the right foam. I'm not confident this green stuff is going to adeq=
uately separate the channels.=0D
=0D
John Crockett=0D
Westminster, Vermont=0D
=0D
--- In <naturerecordists%40yahoogrou=
ps.com>, Paul Jacobson <> wrote:=0D
>=0D
> The SASS patent indicates that the foam for the nose should attenuate fre=
quencies above 1200hz by at least 3dB per inch. All you need to do is test =
for that property.=0D
>=0D
> cheers=0D
> Paul=0D
>=0D
> On 12/07/2012, at 5:42 AM, Peter Shute wrote:=0D
>=0D
> >=0D
> > It would be good if someone could come up with an objective test for id=
entifying this stuff. I was told I should be able to blow through it, but w=
ith more difficulty than with medium density foam, which I wouldn't call an=
objective test unless I had several samples to compare.=0D
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