de.sciss.synth.ugen

Stepper

object Stepper extends Serializable

A pulse counting UGen. Each trigger increments a counter which is output as a signal. The counter wraps inside the interval from lo to hi (inclusive). That if you use a lo other than zero, you might want to adjust resetVal as well. Stepper always starts with the value in resetVal, no matter what lo is or whether the reset trigger is high or not.

See also

de.sciss.synth.ugen.PulseCount

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  6. def ar(trig: GE, reset: GE = 1, lo: GE = 0, hi: GE = 7, step: GE = 1, resetVal: GE = 0): Stepper

    trig

    The trigger signal which increments the counter. A trigger happens when the signal changes from non-positive to positive. Note that if the UGen is created with the trigger initially high, the counter will also be incremented immediately. Thus a Stepper.kr(Impulse.kr(1)) will begin by outputting 1. If you want to avoid this, you could their subtract Impulse.kr(0) from the trigger input, or set resetVal to hi. E.g. Stepper.kr(Impulse.kr(1), lo = 0, hi = 4, resetVal = 4) will produce the sequence 0, 1, 2, 4, 0, ...

    reset

    A trigger which resets the counter to resetVal immediately.

    lo

    The minimum value output. For a decremental step value, the counter jumps to hi if it were to fall below lo.

    hi

    The maximum value output. For an incremental step value, the counter jumps to lo if it were to rise beyond hi.

    step

    The amount by which the counter increases or decreases upon receiving triggers. Note that if you use a decremental counter, still lo must be the minimum and hi must be the maximum value output. If lo > hi, the UGen behaves wrongly. In the case of decremental counter, set resetVal to hi. E.g. to count from 4 down to 0, use Stepper.kr(trig, lo = 0, hi = 4, step = -1, resetVal = 4), or, if you want to ignore an initial high trigger, you could do Stepper.kr(Impulse.kr(1), lo

    0, hi

    is lo but due to the initial trigger from Impulse the Stepper will in fact start outputting from 4.

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  15. def kr(trig: GE, reset: GE = 1, lo: GE = 0, hi: GE = 7, step: GE = 1, resetVal: GE = 0): Stepper

    trig

    The trigger signal which increments the counter. A trigger happens when the signal changes from non-positive to positive. Note that if the UGen is created with the trigger initially high, the counter will also be incremented immediately. Thus a Stepper.kr(Impulse.kr(1)) will begin by outputting 1. If you want to avoid this, you could their subtract Impulse.kr(0) from the trigger input, or set resetVal to hi. E.g. Stepper.kr(Impulse.kr(1), lo = 0, hi = 4, resetVal = 4) will produce the sequence 0, 1, 2, 4, 0, ...

    reset

    A trigger which resets the counter to resetVal immediately.

    lo

    The minimum value output. For a decremental step value, the counter jumps to hi if it were to fall below lo.

    hi

    The maximum value output. For an incremental step value, the counter jumps to lo if it were to rise beyond hi.

    step

    The amount by which the counter increases or decreases upon receiving triggers. Note that if you use a decremental counter, still lo must be the minimum and hi must be the maximum value output. If lo > hi, the UGen behaves wrongly. In the case of decremental counter, set resetVal to hi. E.g. to count from 4 down to 0, use Stepper.kr(trig, lo = 0, hi = 4, step = -1, resetVal = 4), or, if you want to ignore an initial high trigger, you could do Stepper.kr(Impulse.kr(1), lo

    0, hi

    is lo but due to the initial trigger from Impulse the Stepper will in fact start outputting from 4.

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