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rncbc's picture

hi Yuba, thanks again and always for your efforts on updating the Wiki

in summary:

  • Logarithmic - the linear scale of the MIDI controller (rotary knobs, sliders, etc.) is mapped to a logarithmic scale value on the target controlled subject, usually applicable to audio volume, dB scales or even frequency spectrum ranges;
  • Invert - the minimum-maximum range of the MIDI controller are inversely mapped to the maximum-minimum scale values on the target controlled subject (and vice-versa);
  • Feedback - makes any change on state value of the controlled subject to be sent/feed-back to the MIDI controller, to let the latter reflect and sync its state accordingly; most applicable to MIDI controllers with visual (LEDs) and/or mechanical feedback (eg. motorized faders);
  • Hook - the MIDI controller and its controlled subject state/value are always in sync (hooked to each other); otherwise a deferred sync mode is in effect, with both ends playing catch-up on each other's from either direction, until they match their states/values;
  • Latch - the opposite of momentary control (already explained in the other comment);

hth.
cheers