A standard phaser effect with a variable number of stages.
This phaser doubles as a frequency dependent delay, chorus effect and vibrato because it allows you to use up to 128 stages.
- LFO rate.
- Modulation depth; maximum frequency reached.
- Difference in LFO phase applied to left and right channels.
- Shape of LFO waveform from peaks through triangle to sine.
- Cutoff frequency; minimum frequency reached.
- Mixture between dry and wet signals mixed to output.
- Amount of phase-shifted signal to feed-back to the input.
- Number of phase shifting stages to use per channel.
For a chorus effect; set stages to 128 and set the frequency and modulation depth parameters to approximately 75%.
With so many filters in series (128) the phase is very flat in the low frequency range below approximately 10 kHz. Above this point the signal will be shifted out of phase relative to the low frequency range and you will notice a "ringing" effect on discontinuities.
You can try adjusting the feedback above 50% for positive feedback to produce even-harmonic chorus effects or below 50% for negative feedback which produces odd-harmonic flanger effects.
For use as a frequency-dependent delay with times around 50ms for 50hz; set the stages to 128, the frequency to 5% and modulation depth to 0%.
Try sending a clean sine to the input with soft attack and release. You will find that the delay time depends upon the frequency of the input. You can try adjusting the feedback and mix parameters to produce echo effects as desired exactly as in a delay effect.