HarModulator combines twin chromatic pitch shifters with modulation to deliver an extremely wide range of effects from the subtle to the insane. Chromatic pitch shifters allow you to set the pitch ratio of each of the voices in semi-tone intervals (12 steps per octave). HarModulator features a six octave range (three up, three down).
To get a sense of how to use the modulation function, it’s best to start simply by setting both Pitch A and Pitch B to UNISON, the delays to minimum, and feedback to 0. Now use the Depth control to set the amount of pitch modulation and the Speed control to adjust the modulation rate. Turn selecting different modulation shapes and sources. Note that you can select ENVELOPE as a source and use the dynamics of your playing to drive the modulation.
OK, now try that with some pitch shifting, delay and feedback!