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Logic 9 Sysex bit changer buttons?

Discussion in 'Logic 9' started by argkagrk, Feb 12, 2016.

  1. argkagrk

    argkagrk New Member


    I'm currently building a Logic editor for an old Yamaha 4-OP FM synth.
    Everything is going great, except I can't figure out how to make buttons that affect the relative value of another fader, which sends a Sysex string (43 10 12 5D xx) for turning each operator on and off. There are possible 16 states total, so I have made a fader that goes from 0 to 15, and it works fine.

    There is an iOS app that does this with "bit changers":

    The patch I made with MIDI Designer has 4 buttons (one for each operator) that affect the relative value of the Sysex fader.

    But I can't wrap my head around this problem in Logic.

    Any help is appreciated!

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