PSN-L Email List Message

Subject: Frequencies
From: tchannel1@............
Date: Sat, 10 May 2008 16:07:27 -0600


Hi Folks,  With some help from many of you, I understand how one loses =
the signals LONGER than your sensor natural period.  ie  If you sensors =
period is 10 seconds it will lose  (attenuate) the longer frequencies at =
a rate of 12 decibels per octave.   I think I understand that part. =20

But want about the opposite, say the sensors is 10 second, how does it =
lose or does it lose shorter frequencies, like 2, 4 or 6 seconds waves?

My new Lehman is set at 20 seconds, will it pick up 1, 2, and 3 seconds =
waves?








Hi Folks,  With some help from = many of you, I=20 understand how one loses the signals LONGER than your sensor natural=20 period.  ie  If you sensors period is 10 seconds it will = lose =20 (attenuate) the longer frequencies at a rate of 12 decibels per=20 octave.   I think I understand that part. 
 
But want about the opposite, say the = sensors is 10=20 second, how does it lose or does it lose shorter frequencies, like 2, 4 = or 6=20 seconds waves?
 
My new Lehman is set at 20 seconds, = will it pick up=20 1, 2, and 3 seconds waves?
 
Thanks, Ted

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