Looking for continuously rising phaser

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    • #111845

      'Ello all.  Recent procurement of an H9 has me quite excited and a bit overwhelmed.  I used to have a Digitech Hyperphase and it had an effect of a continuous falling phaser or continuous rising phaser rather than up and down as in traditional phaser effects.  Are there any settings/algorithms available for this type of effect?

    • #126519

      The Phaser algorithm isn't going to have the multi-phase LFO control that you're going to need for a 'barberpole' phase shifter.  As I understand it, you have to ramp the all pass filters up (or down) – offset in phase every 45 or 90 degrees.  Then you have to fade each of the filters in & out (triangle wave) to produce the constant rising (or falling) illusion.

      You may be able to come somewhat close with a BiPhaz setting, reversed operation, and a very slow Speed value.  Still, I don't think that there's enough there to produce a convincing simulation; even with the secondary S-Mod and D-Mod controls.  I don't have the Phaser algo – yet – but maybe I can try out some settings in under the 5-minute demo time.  I'll let you know what I can come up with.

      That's a fascinating proposition for a H9 Special algo feature request, though.  It may be too much of a one-trick pony alone.  But a quadrature-type LFO, with a parallel LFO controlling amplitude, could be applied to different types of effects:

      • All pass filter = barberpole phaser.
      • Lowpass / high pass / notch filter = barberpole filter?
      • Short delay line = barberpole flanger.
      • Short delays & channel amplitude = pseudo-quad panning.
      • (Any effect) rate control = Risset-type increasing / decreasing tempo illusion.
      • Pitch = Shepard-Risset "scales".

      You can hear some of the latter effects using the MicroPitch or H910/H949 algorithms.  The pitch shift is in the feedback loop, so regenerated tones constantly rise or fall.  It depends on whether there is a slight detuning above or below unison.  Not quite the same as Shepard tones, because there's no offsets or fading in & out of pitches.

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