Thomas
Let's see. First you display an event. Then if you take the mouse and click=
 on some point in time during the event. Then while depressing the mouse sw=
eep across to a second time you will get a blow up of the new time window. =
Then click on the fft button ( the smaller one). This gives you an FFT of t=
hat time window. Both windows are there, you have to hit the button that wi=
ll allow both to be displayed. I then positioned both the fft and the time =
window so I could see them at the same time. I put the FFt on the top (full=
 monitor width but half the screen height. The time window I put on the bot=
tom. Because you have selected only a portion of the event time window, the=
re will be a scroll bar on the bottom. The fft displays what is on the time=
 screen, so if you move the scroll bar in the time window you will see the =
FFt for that window. Therefore if you have the phases shown in the time win=
dow , when you scroll pass that point in time with the scroll bar
 you will see the frequency change as the phase arrives. Sort of long winde=
d. Clear as mud?

Regards
Barry
http://www.seismicvault.com

--- On Mon, 1/11/10, Thomas Dick  wrote:

From: Thomas Dick 
Subject: Re: Sensor noise / Winquake fft
To: psn-l@..............
Date: Monday, January 11, 2010, 5:03 PM

Barry Lotz wrote:
>=20
> Maybe all you folks were aware of it but it just came to my attention now=
.. Winquake has the nice feature that , after selecting an event file, if yo=
u select a time window with the mouse and you run a "window" FFT you will s=
ee the FFT for that time window. Now display both windows on the same scree=
n one below the other. Set the button to display the event=A0 phases. If yo=
u now use the horizontal scroll bar you can start before the event and scro=
ll thru the event noting how the frequencies change as the phases arrive. I=
 see this very useful in selecting the filter to use in processing your dat=
a.
>=20
> Regards
> Barry
> http://www.seismicvault.com
>=20
> --=20
Barry would you try putting this into different words. I tried to do it and=
 couldn't get it to work.
__________________________________________________________

Public Seismic Network Mailing List (PSN-L)

Thomas
Let's see. First you display an eve=
nt. Then if you take the mouse and click on some point in time during the e=
vent. Then while depressing the mouse sweep across to a second time you wil=
l get a blow up of the new time window. Then click on the fft button ( the =
smaller one). This gives you an FFT of that time window. Both windows are t=
here, you have to hit the button that will allow both to be displayed. I th=
en positioned both the fft and the time window so I could see them at the s=
ame time. I put the FFt on the top (full monitor width but half the screen =
height. The time window I put on the bottom. Because you have selected only=
 a portion of the event time window, there will be a scroll bar on the bott=
om. The fft displays what is on the time screen, so if you move the scroll =
bar in the time window you will see the FFt for that window. Therefore if y=
ou
 have the phases shown in the time window , when you scroll pass that point=
 in time with the scroll bar you will see the frequency change as the phase=
 arrives. Sort of long winded. Clear as mud?

Regards
Barry
http://ww=
w.seismicvault.com

--- On Mon, 1/11/10, Thomas Dick <=
;dickthomas01@.............> wrote:
=

From: Thomas Dick <dickthomas01@.............>
Subject: Re: Se=
nsor noise / Winquake fft
To: psn-l@..............
Date: Monday, Janu=
ary 11, 2010, 5:03 PM

Barry Lotz wrote:
=
> 
> Maybe all you folks were aware of it but it just came to my a=
ttention now. Winquake has the nice feature that , after selecting an event=
 file, if you select a time window with the mouse and you run a "window"
 FFT you will see the FFT for that time window. Now display both windows on=
 the same screen one below the other. Set the button to display the event&n=
bsp; phases. If you now use the horizontal scroll bar you can start before =
the event and scroll thru the event noting how the frequencies change as th=
e phases arrive. I see this very useful in selecting the filter to use in p=
rocessing your data.
> 
> Regards
> Barry
> http://www.seismicvault.=
com
> 
> -- 
Barry would you try putting this into diffe=
rent words. I tried to do it and couldn't get it to work.
______________=
____________________________________________

Public Seismic Network =
Mailing List (PSN-L)

To leave this list email PSN-L-REQUEST@.............. with the body of the message (fir=
st
 line only): unsubscribe
See http://www.seismicnet.com/maillist.html for =

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