Difference between freqshift~ fbinshift~ gizmo~


    Mar 25 2012 | 3:27 pm
    Hi everyone,
    I have a mess in my brains: what is the difference between freqshift~ (time-domain freq shifter) and fbinshift~ (freq domain freq shifter) and gizmo~ (freq domain pitch shifter)? The two first ones seem to have the same output when applied to sound. Also the concept of time-domain frequency shifter versus frequency domain freq shifter. I would appreciate some background theory of what is going on in the signal. Thanks!

    • Dec 21 2012 | 7:28 pm
      Me too, I would like to understand the difference between freqshift~ and fbinshift~...
      Nobody ?
    • Dec 26 2012 | 8:20 am
      They should pretty much sound the same, but fbinshift~ works within pfft~ so you might build arround some other thing. For instance you could decide to shift only some bins and not the others.
      Edit: yeah sorry I'm only talking about the frequency shifter here... gizmo~ transposes (and keep the same ratios between the partials).
    • Dec 27 2012 | 12:31 am
      From what i know, a frequency shifter works different than a pitch shifter.
      A frequency shifter creates sidebands dictated by a ratio in Hz and does not maintain the harmonic relationship of a sound, a Pitch shifter on the other hand, maintains the harmonic relationship of a sound and just shifts the pitch.
      I wish i could explain the theory in detail but that's all I know.
    • Dec 27 2012 | 7:36 pm
      merci emmanuel. that's clear :-)
      @ardodot, yes I know the difference between pitch and frequency shifter. but thx for your answer anyway.
      my question was about those three ways to make a frequency shifter, the difference was not clear for me. but yes if you want a swiss knive of shifting gizmo is the tool, if you just want something simple freqshift~ is ok and I suppose less expensive than fft.