I still have a copy of that program, and use it daily to generate 24 hr. 
  helicorder plots from my data files.  It is a very nice program 
written, I believe, by Arie Verveer (sp?).  If it can't be found 
elsewhere, I would be happy to send a copy to anyone who is interested.

Larry Conklin
Liverpool, NY
lconklin@............


Randy wrote:
> 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
>>
>> 
>> 
>> 
>> 
>>  FONT-FAMILY:=20=
>> Arial"=20
>> bottomMargin=3D7 leftMargin=3D7 topMargin=3D7 rightMargin=3D7> id=3Drol=
>> 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.
>> 
 
>> 
 New">Bob



> T style=3D"color: black; font: normal 10pt ARIAL, SAN-SERIF;">
 style=3D"M=
>> ARGIN-TOP: 10px">See what's free at  title=3D"http://www.aol.com?ncid=3DAO=
>> 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)
> 
> To leave this list email PSN-L-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)