User manual

19
Prophet-10 User’s Guide
Oscillators
Use Poly Mod to sweep the pitch of Oscillator A when it is synced to generate
the classic, hard-edged sync sound. See “Creating a Hard-Sync Lead” on page 51
for more details.
Lo freq: Off, On—Turns Oscillator B into a low-frequency oscillator,
essentially providing another LFO source for modulation using Poly
Mod. The frequency, fine, shape, and pulse width controls still apply and
will affect the character of any low-frequency modulation applied using
Oscillator B.
Keyboard: Off, On—When off, the Oscillator B ignores the keyboard
and note data received via MIDI and plays at its base frequency setting.
Oscillator B pitch can still be affected by modulation from other sources
when in this mode. When keyboard is off, the frequency knob has a 9
octave range.
To listen to the oscillators:
1. Recall the basic preset by holding down record and pressing preset.
2. In the basic program, only Oscillator A is turned up in the Mixer. Oscil-
lator A waveshape is set to sawtooth. The level of Oscillator B is set to
zero.
3. Hold down a note on the keyboard and in the oscillators section,
toggle the sawtooth and square wave selectors on and off to hear the
difference between the two separately, and in combination.
4. Turn off the sawtooth wave and turn on the square wave.
5. Turn the pulse width knob right and left to hear how the timbre of the
waveform changes as you narrow its pulse width. At the 12 o’clock
position the wave is perfectly square. At either extreme, the pulse width
is so narrow that the sound becomes virtually inaudible.
Pulse Width
value: 5
Pulse Width
value: 10
Changing pulse width