Hi David
A friend of mine, Grant Connell, has written a number of useful programs th=
at he gives away. One of which is Spectrumview.
Check out his website at http://www.hotamateurprograms.com/

I've used this program in the waterfall mode and find it easy to use.
Pete

--- On Thu, 6/18/09, David Saum  wrote:

From: David Saum 
Subject: waterfall plot of infrasound data files?
To: psn-l@..............
Date: Thursday, June 18, 2009, 12:37 PM

I am using Amaseis to record infrasound data
(sound below 20 Hz) and I would like to plot
my data to display dopper shifts.

My infrasound receiver is a few miles from
the Pentagon and I seem to be in the flight
path between the Pentagon and Quantico.
Every day I pick up helicopter noise in the
10 to 20 Hz band.=A0 There seems to be
a nice dopper shift that I have not figured
out how to display with seismic software.

Here is a typical SAC data file from a
helicopter overflight this morning:
http://www.infiltec.com/seismo/090618heli1.sac The fundamental shifts from =
~12.5 Hz as it approaches, to ~9.5 Hz as it leaves.

Can anyone suggest software to plot this data
to display the dopper shift?=A0 Perhaps a stacked
3D spectra-time plot, or a 2D waterfall of frequency vs time?=A0 Of course =
I can generate
any of the Amaseis file formats or any of the
WinQuake formats as program inputs.

Thanks

Dave
http://www.infiltec.com/Infrasound@home

__________________________________________________________

Public Seismic Network Mailing List (PSN-L)

Hi David
A friend of mine, Grant Connell, =
has written a number of useful programs that he gives away. One of which is=
 Spectrumview.
Check out his website at http://www.hotamateurprograms.co=
m/

I've used this program in the waterfall mode and find it easy to =
use.
Pete

--- On Thu, 6/18/09, David Saum <DSaum@infilte=
c.com> wrote:

From: David Saum &=
lt;DSaum@............>
Subject: waterfall plot of infrasound data fil=
es?
To: psn-l@..............
Date: Thursday, June 18, 2009, 12:37 PM<=
br>
I am using Amaseis to record infrasound dat=
a
(sound below 20 Hz) and I would like to plot
my data to display dop=
per shifts.

My infrasound receiver is a few miles from
the Pentag=
on and
 I seem to be in the flight
path between the Pentagon and Quantico.
E=
very day I pick up helicopter noise in the
10 to 20 Hz band.  There=
 seems to be
a nice dopper shift that I have not figured
out how to d=
isplay with seismic software.

Here is a typical SAC data file from a=

helicopter overflight this morning:
http://www.infiltec.com/seismo=
/090618heli1.sac The fundamental shifts from ~12.5 Hz as it approaches,=
 to ~9.5 Hz as it leaves.

Can anyone suggest software to plot this d=
ata
to display the dopper shift?  Perhaps a stacked
3D spectra-t=
ime plot, or a 2D waterfall of frequency vs time?  Of course I can gen=
erate
any of the Amaseis file formats or any of the
WinQuake formats =
as program inputs.

Thanks

Dave
http://www.infiltec.com/Infrasound@home

_____=
_____________________________________________________

Public Seismic=
 Network Mailing List (PSN-L)

To leave this list email PSN-L-REQUEST@.............. with the body of the mes=
sage (first line only): unsubscribe
See http://www.seismicnet.com/maillist.ht=
ml for more information.

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