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#109 split files when a known frequency occurs

Next_Release_(example)
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nobody
split files when a known frequency occurs (1)
1
2014-11-02
2014-03-15
Anonymous
No

it would be great if the option of splitting files when a certain frequency occurs. for example in a long live recorded file we would introduce to the signal a high frequency of lets say 22.000hz, which is not listenable by humans (you could listen to it when you are first born maybe) and then scan the file, find those frequency points with a frequency (fourier transform) analysis and then add que points to the file.

Discussion

  • Munteanu Alexandru

    Munteanu Alexandru - 2014-04-20

    Hello,

    Why would you need such feature ?

    --
    Alex

     

  • Borut Mrak

    Borut Mrak - 2014-11-02

    We need to split shows from a radio archive recording to publish them on our radio station's web page.
    Since the beginnings and ends vary by a few minutes from the published schedule (we don't cut songs in the middle to start a show) this involves a lot of manual labour.
    Our take on the problem is playing a high frequency signal at the start and end of the show and looking for that in the recording to detect split points.

    This is how far we came now. My colleague (who i think might be the author of the original post) got automatic splitting to work (with other software).

    When we need to fix something (because the technician forgot to play the show intro/outro which contains the signal etc.), we have to load mp3 files that are sometimes hours long and computing the waveform takes a while. Could we somehow precompute the waveform in advance so it gets loaded on our workstations at the same time as the mp3 file is opened with mp3splt-gtk?

    Best regards,
    Borut Mrak.

     
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