1932[dxatlas] Re: Editing Skimmer WAV Files?
- May 2, 2010Thanks, Alex! That's solved it.
I'm assembling a few download-friendly-length extracts from some PJ2T logs from the 2009 CQWW 160 CW Contest. It's pretty jaw-dropping to watch the callsigns decoding from the target-rich environment (~800 decoders, 230 callsigns spotted under "paranoid" filter in an hours time). That's even with the PJ2T transmitter mucking up the receiver while running a pileup!
--- In firstname.lastname@example.org, "Alex, VE3NEA" <alshovk@...> wrote:
> Hi Jeff,
> The center frequency, UTC date/time and other parameters of the recording
> are stored in the WAV headers. If you save a fragment of a recording in a
> new file, you can add the missing headers manually using the WavInfo tool
> available at (www.dxatlas.com/cwskimmer/files/wavinfo.zip). You can run two
> instances of this tool, open the original file in the first instance and the
> new file in the second instance, and copy-and-paste the headers.
> I believe many general purpose wav editors also have commands for editing
> the info headers.
> 73 Alex VE3NEA
> ----- Original Message -----
> Editing the CW Skimmer WAV files does not seem to work with an audio editing
> tool. I sliced off all but the first 10 minutes of the file, and played it
> back using CW Skimmer. It decodes the callsigns, but the absolute frequency
> information is lost. It plots against an offset rather than the absolute
> frequencey captured.
> The unedited original ~1 hour file decodes as expected.
> Any guidance how I can slice off a ten minute period of a large captured WC
> Skimmer WAV file without losing any information?
> 73, Jeff K8ND
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