Thanks, Bob, for pointing this out to me.
   I downloaded the update and now have this very useful feature of selecting
between linear and log-log plots of spectra.  This increases the flexibility of
Amaseis considerably, especially in the low frequency realm where I hope that many
of you will follow Allan Coleman's lead.  Kudo's to Alan Jones for providing this
additional capability to his outstanding software.
Incidently, I have been using Amaseis to both collect and analyze some pendulum
data as part of my research of low-level anharmonicity.  Those who are interested
might want to look at the Mercer Physics department webpage announcement concerning
the seminar I will be giving next week
http://physics.mercer.edu/seminars/default.htm
     Something I just noted (don't know whether it was available on the earlier
version of Amaseis)--is a very useful additional feature of the code; i.e., the
ability to read-off (by cursor placement with the mouse) the FFT magnitude as well
as the frequency of a spectral line.  This is of great value when it comes to
estimating the quality factor of a pendulum in free-decay using the so-called
"short time-Fourier-transform" (STFT).  One can 'step through' the record manually
to accomplish what is typically an automated process as in routines like LabView.
   About my comments concerning the synergy of Amaseis and WinQuake when used
interchangeably--even with the Amaseis upgrade, I still find some significant
advantages to using the two of them in this way.  To my knowledge, Amaseis does not
presently allow for saving (exporting) the spectral data, whereas the version of
WinQuake that I am using does.  I don't know if Larry has folded that capability
into the latest version of the code on his website.  The reason data export is
valuable to me is because of the things I am able to do with the data once I have
loaded it into Excel.  For example, one can then generate phase plots (numerically
generated velocity versus position), correlation plots between two different
records, etc, etc........ As much as I resist advertising Microsoft products, Excel
is in a class all its own!  Its use opens up a lot of new possibilities for a
better understanding of seismology.  One thing that I regularly compute with it are
power spectral densities, for which (at least to the extent linear assumptions are
valid) the results are independent of the specifics of the instrument that
collected the data.
      What I see increasingly from the interchanges of this listserve is impressive
for the following reason--collectively we can advance seismology in ways that may
not even be possible for the professional science groups.  At least in my career I
have not observed comparable means to facilitate advancement.  The desire for
knowledge, devoid of unwarranted arrogance, that I have seen in listserve comments,
is a refreshing change from most of my experiences over the last forty years.

    Randall


psn-l-digest-request@.............. wrote:

> .------ ------ ------ ------ ------ ------ ------ ------ ------ ---- --.
> | Message 1                                                           |
> '------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
> Subject: Re: WinSDR vs. AmaSeis Software
> From:    Bobhelenmcclure@.......
> Date:    Fri, 9 Feb 2007 17:31:21 EST
>
> -------------------------------1171060281
> Content-Type: text/plain; charset="US-ASCII"
> Content-Transfer-Encoding: 7bit
>
> Hi Randall Peters,
>
> You said,
>
> "I have found some remarkably useful synergetic features  of using WinQuake
> and
> Amaseis interchangeably.  For example, Amaseis  does spectra without
> log-frequency or
> log-magnitude; whereas the plots of  WinQuake are log-log."
>
>
>   My version of Amaseis can do both linear and log-log plots. The FFT  tab
> clearly shows a choice between linear and log-log display. Maybe you need to
> update.
>
> Bob
>
> -------------------------------1171060281
> Content-Type: text/html; charset="US-ASCII"
> Content-Transfer-Encoding: quoted-printable
>
> 
> 
> 
> 
>  Arial"=20
> bottomMargin=3D7 leftMargin=3D7 topMargin=3D7 rightMargin=3D7> e_document=20
> face=3DArial color=3D#000000 size=3D2> color=3D#000000=20
> size=3D2> T=20
> id=3Drole_document face=3DArial color=3D#000000 size=3D2> ument=20
> face=3DArial color=3D#000000 size=3D2>
> 
Hi Randall Peters,
> 
 
> 
You said,
> 
 
> 
"I have found some remarkably useful synergetic feat=
> ures=20
> of using WinQuake and
Amaseis interchangeably.  For example, Amaseis=
> =20
> does spectra without log-frequency or
log-magnitude; whereas the plots of=
> =20
> WinQuake are log-log." 
> 
 
> 
 
> 
  My version of Amaseis can do both linear and log-log plots. The=20=
> FFT=20
> tab clearly shows a choice between linear and log-log display. Maybe you nee=
> d to=20
> update.
> 
 
> 
Bob
>
> -------------------------------1171060281--
>
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