#91 find zero crossing, also find beat

open
Davy Durham
None
5
2005-03-06
2005-03-03
Anonymous
No

how about a control function to move the start or end
edit point to the closest zero crossing?
and the same for beats, or maybe better, to
automatically generate cue points on beats in a
selected region?

thanks
rezound is great

t.barrass@pgrad.unimelb.edu.au

Discussion

  • Davy Durham
    Davy Durham
    2005-03-06

    • assigned_to: nobody --> ddurham
     
  • Davy Durham
    Davy Durham
    2005-03-06

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    Zero crossings make sense.. although it should probably
    figure out if you want the next zero crossing going from
    negative to positive or positive to negative--and would it
    be useful to say that it had to be a zero crossing that
    remained on that side of zero for some specified number of
    samples?

    However, I'm not sure what you mean by "beats".. are we just
    simply saying that, for example, this track is 120bpm, so
    the next "beat" falls on the next sample position that
    would be on-beat? Or is it something more complicated than
    that?

     
  • tim
    tim
    2005-03-08

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    hi Davy,
    you have obviously thought it through further and your ideas
    about zero crossings sound good.

    As for beats, I was thinking of something like "bonk" in pd,
    or even a simpler thing to look for sudden (increasing?)
    transitions in the power of the signal and mark them with a cue

    tim

     
  • Davy Durham
    Davy Durham
    2005-03-08

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    '"bonk in pd"? a 'bonk' pattern in power domain? Please
    explain..

     
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    I think by "pd' he means Pure Data.

    I don't know what this bonk does but I suppose a "beat"
    would be something like a drumbeat in a drum track. I.e. a
    sudden high amplitude sound.

     
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    Please could a "split at transient" option be added please. Thank you :)