Hi All and Hi Roberto,

probably I already answered to a request to you.
I don't remember who asked me about record earthquake using
a sound blaster.
John Lahr is right when say the SB device have a high-pass filter
that remove all signals below 10 or 20Hz.

===
probabilmente ho già risposto ad una tua mail al riguardo
non ricordo, qualcun altro mi chiese la stessa cosa.
John Lahr dice giusto affermando che con una SB non si riesce
a regsitrare bene i terremoti, esse hanno infatti un filtro passa
alto che rimuobe tutti i segnali al di sotto di 10, 20 Hz cosa
che invece a noi interessa.

===

I suggest you to try out the LX1500 board (the most economic
a/d converter available in Italy) it is a single channel interface
16 bit 50 SPS.

===
Ti suggersico di usare la LX1500 se vuoi spendere il meno possibile
ma è monocanale a 16 bit 50 sps. non male ma è limitatissima.

===
OR you can use one of my SADC10 board available with 4 channel
true 16 bit or 18 bit low noise embeddending also DCF77 decoder
for precise timing.

===
Oppure puoi usare la mia SADC10 che arriva a 4 canali e
incorpora il decoder DCF77, c'è sia in versione 16 bit che 18 bit
a basso rumore.

===
Both LX1500 and SADC10 are fully supported by SEISMOWIN.
Entrambe sono supportate da SEISMOWIN

Seismowin generates Winquake compatible files
Seismowin genera file compatibili con winquake

===

You can contact me at mariotti@.........

ciao
mauro


----- Original Message ----- 
From: "John or Jan Lahr" 
To: ; 
Sent: Tuesday, June 03, 2003 3:30 PM
Subject: Fwd: FW: italian


> Dear Roberto,
>
> I do not know of a system for recording seismic data with a sound card.
> You would not be able to attach the seismic signal directly to the sound
> card because the frequency of the seismic signals are too low.  There
might
> be a way to modulate a higher frequency with the seismic signal and record
> that.  However I don't know how one would easily interpret the modulated
> signal.
>
> I will send your question to the Public Seismic Network mailing list to
> see if one of the members can provide some advice.
>
> A good, inexpensive option for seismic recording uses a Dataq.com
> analog to digital converter (AD).  They have one model that sells for just
$25
> See:  http://dataq.com/194.htm   It connects to the serial port of a PC.
>
> This AD will work with the free AmaSeis software provided by Alan Jones.
> See:
> http://www.geol.binghamton.edu/faculty/jones/jones.html#AmaSeis
>
> I've posted a lot of information that would be useful for setting up a
> seismic station here:
> http://jclahr.com/science/psn/epics/links.html
>
> Also, see Larry Cochrane's PSN site:
> http://www.seismicnet.com/index.html
>
> Cheers,
> John Lahr (from home!)
> USGS
> Golden, CO
>
>
> >------ Forwarded Message
> >  > From: roberto fichera 
> >  > Reply-To: robertofichera1@...........
> >  > Date: Thu, 22 May 2003 09:15:26 -0700
> >  > To: lisa@........
> >  > Subject: italian
> >  >
> >  >
> >  >
> >  > I HOPE CHE QUALCUNO CAPISCA L'ITALIANO LI NEGLI U.S.A. PLEASE HELP
ME,
> >  > BECAUSE I DO NOT WRITE VERY WELL IN ENGLISH.
> >  > I WONT A SOFTWARE SEISMOLOGIC RECORDER VIA SOUNDBLASTER WITH MY
PERSONAL
> >  > COMPUTER.
> >  > PENTIUM 3 128 MB OF RAM, HD 40 GB,SOUND BLASTER 128 BIT.
> >  >
> >  >
> >
> >------ End of Forwarded Message
> >
> >
> >------------- End Forwarded Message -------------
>
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>
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