PSN-L Email List Message

Subject: Re: Digest from 07/09/2007 00:00:06
From: "Randy" rpratt@.............
Date: Tue, 10 Jul 2007 12:15:53 -0500


Hi,

A couple of years ago one of the PSN members offered a program called
'RECENT' that created filtered displays and helicorder type output in HTML
format.  A side function was to create a sound file from the event with
control of playback rate.  It worked quite well.  I don't know if it is
available somewhere but if not I think I could find a copy somewhere in my
files. The program operates in a batch mode and is quite easy to use.

Randy

----- Original Message ----- 
From: 
To: 
Sent: Tuesday, July 10, 2007 02:01
Subject: Digest from 07/09/2007 00:00:06


>
> .------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
> | Message 1                                                           |
> '------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
> Subject: Re: FFT Waterfall Display
> From:    "Michael Kimzey" 
> Date:    Mon, 09 Jul 2007 08:23:35 -0400
>
>
> >The Cornell Lab of Ornithology offers a free program for displaying
> >waterfall spectrograms of WAVE format sound files, which although
intended
> >primarily
> >for the study of bird songs, would be useful for earthquakes as well.
All
> >you
> >have to do is convert your event files to 16-bit monaural WAVE  format
and
> >use Cornell's "Raven Lite 1.0" application. It is free, and can  display
> >spectrograms in color or black-and-white. See:
> >
> >   _http://www.birds.cornell.edu/brp/raven/Raven.html_
> >(http://www.birds.cornell.edu/brp/raven/Raven.html)
> >
>
> Ok, so that begs the question, how do we convert an event to a 16 bit wave
> file?  Actually, this is a question that has more implications, as some
> gentleman actually took USGS data and did convert it to a wave file, then
> sped it up and is using it as an art exhibit.  See:
> http://www.jtbullitt.com/index.html
> So, if anyone knows how to convert events, or even WinSDR data to a "wave"
> file, it can be sped up and I think that one day's worth was approximately
4
> minutes of sound.
> Interesting.
>
> - Mike
>
>
>
>
> .------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
> | Message 2                                                           |
> '------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
> Subject: Re: FFT Waterfall Display
> From:    Bobhelenmcclure@.......
> Date:    Mon, 9 Jul 2007 22:48:01 EDT
>
>
> -------------------------------1184035681
> Content-Type: text/plain; charset="US-ASCII"
> Content-Transfer-Encoding: 7bit
>
> The WAVE format is described  at:
>
>   _http://www.borg.com/~jglatt/tech/wave.htm_
> (http://www.borg.com/~jglatt/tech/wave.htm)
>
> The header data is 44 bytes long, and the  remainder of the file
> consists usually of 16-bit data samples.
> __________________________
> | RIFF WAVE  Chunk          |
> |    groupID  = 'RIFF'      |
> |   riffType  = 'WAVE'      |
> |     __________________    |
> |   | Format  Chunk     |   |
> |   | ckID =  'fmt '    |   |
> |    |__________________|   |
> |     __________________    |
> |   | Sound Data Chunk  |   |
> |   | ckID = 'data'    |   |
> |   |__________________|    |
> |__________________________|
>
>   The PSN TYPE 4 file format is described  at:
>
>   _http://www.seismicnet.com/psnformat4.html_
> (http://www.seismicnet.com/psnformat4.html)
>
>   If you know how to program in QuickBasic,  Visual Basic, or C the above
> documents provide enough information for writing an  application to
convert PSN
> files to WAVE format.  I could easily add this  function to my
WQFilter.exe
> utility, but don't presently have the ambition to do  so. Sorry about
that.
>
> Bob
>
>
>
> ************************************** See what's free at
http://www.aol.com.
>
> -------------------------------1184035681
> 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>
> 
  The WAVE format is described=20 > at:
>
 
>
  href=3D"http://www.borg.com/~jglatt/tech/wave.htm"> face=3D"Courier New">http://www.borg.com/~jglatt/tech/wave.htm IV> >
 
>
The header data is 44 bytes long, and the=20 > remainder of the file
consists usually of 16-bit data samples.=20 >
 __________________________
| RIFF WAVE=20 > Chunk          |
|  =20 > groupID  =3D 'RIFF'      |
|   ri= > ffType=20 > =3D 'WAVE'      |
|   =20 > __________________    |
|   | Format=20 > Chunk     |   |
|   | ckID=20= > =3D=20 > 'fmt '    |   |
|  =20 > |__________________|   |
|   =20 > __________________    |
|   | Sound Data Chunk=20 > |   |
|   | ckID =3D 'data'  =20 >  |   |
|   |__________________|  =20 > |
|__________________________|
>
 
>
  The PSN TYPE 4 file format is describ= > ed=20 > at:
>
 
>
  href=3D"http://www.seismicnet.com/psnformat4.html"> face=3D"Courier New">http://www.seismicnet.com/psnformat4.html IV> >
 
>
  If you know how to program in QuickBa= > sic,=20 > Visual Basic, or C the above documents provide enough information for writin= > g an=20 > application to convert PSN files to WAVE format.  I could easily add th= > is=20 > function to my WQFilter.exe utility, but don't presently have the ambition t= > o do=20 > so. Sorry about that.
>
 
>
Bob



T style=3D"color: black; font: normal 10pt ARIAL, SAN-SERIF;">
ARGIN-TOP: 10px">See what's free at LAOF00020000000503" href=3D"http://www.aol.com?ncid=3DAOLAOF00020000000503"=20= > target=3D"_blank">AOL.com.
> > -------------------------------1184035681-- > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-DIGEST-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L)

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