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Disgustingly simple beginner question (sorry): CV Offsets?

Discussion in 'Building With Reaktor' started by joop, Mar 30, 2015.

  1. joop

    joop NI Product Owner

    Messages:
    333
    How do I offset a control signal in Reaktor's environment? Ctrl shaper BP modules? E.g. getting a sine LFO to modulate only positively (no negative values, or more specifically between specific desired values, like 10 and 100).

    Thank you.
     
    Last edited: Mar 30, 2015
  2. colB

    colB NI Product Owner

    Messages:
    3,969
    If your sine is in the range -1..1, and you want 0..1, then add 1 and multiply by 0.5 (avoid divide where possible because it uses more cpu). So you need an add module, a multiply module and two constant modules, one set to 1 and one set to 0.5.
     
  3. salamanderanagram

    salamanderanagram NI Product Owner

    Messages:
    3,454
    add a value to the output?

    edit - oops, left the page open too long and another reply swooped in first!
     
  4. joop

    joop NI Product Owner

    Messages:
    333
    Thanks to both of you. I swore I tried this before posting, but didn't get the kind of summing I expected (i.e. what you suggested).

    I tried again and got the values out I wanted. Thanks.
     
  5. ehdyn

    ehdyn NI Product Owner

    Messages:
    547
    Also, under "Math" there's rectification
     
  6. gentleclockdivider

    gentleclockdivider NI Product Owner

    Messages:
    744
    set sine amp input to 0.5 , then ad a constant of 0.5 to output
    This makes it unipolar above zero dc line
     
  7. gentleclockdivider

    gentleclockdivider NI Product Owner

    Messages:
    744
    If you just rectify a sine , you just make the negative phase positive , iow ..the output will not be a sine anymore..
    I always use reaktor in renoise , having a nice scope/signal analyzer .