User manual

23
Prophet-10 User’s Guide
Filter
The Filter
To hear the effect of the rev 1/2 lter:
1. Recall the basic preset by holding down record and pressing preset.
The rev3 lter is selected by default. Switch to the Rev 1/2 lter by
pressing the rev switch.
2. In the basic program, only Oscillator A is turned up in the Mixer. For
a fuller sound, turn up Oscillator B in the Mixer, set its waveshape to
sawtooth and detune it slightly by turning its fine knob to 2.
3. Hold down a note and rotate the lter’s cutoff knob. Notice how it cuts
the high frequencies as you rotate counter-clockwise, making the sound
of the oscillator less bright. If you turn the cutoff knob fully counter-
clockwise you’ll lter out all frequencies and hear nothing.
4. Return the cutoff knob to its halfway position, hold down a note again
then turn the resonance knob about halfway up.
5. Rotate the lter’s cutoff knob again and listen to the sound change as
a band of frequencies near the cutoff is amplied. This how to create a
classic resonant lter sweep.
To hear the effect of the rev 3 lter:
1. Press the rev switch to select rev 3 lter.
2. Hold down a note and rotate the lter’s cutoff knob. Again it cuts the
high frequencies as you rotate counter-clockwise, but the character of
the lter is subtly different.