User manual

47
Prophet-10 User’s Guide
Synth Bass
Long Version
Here’s a more detailed version that provides insight into the process.
You’ll start with the Basic Program, then learn how to choose an appro-
priate oscillator waveshape, how to use the lter, how to use the enve-
lopes, and how to use Unison to fatten things up.
In the Basic Program, only Oscillator A is audible. Its waveshape is set
to sawtooth and its level is 10 in the mixer. (Oscillator B is set to 0 in the
Mixer and no wave shape is selected.)
To start with the Basic Program:
1. Recall the basic preset by holding down record and pressing preset.
Each of the waveforms have their own unique sound:
• The sawtooth waveform is a good starting point for sounds because it
has plenty of harmonics. This gives you a lot to work with in terms of a
raw sound that you can lter and modulate.
• The pulse (square) wave is a good starting point, too, but sounds
different than the sawtooth, because of its different harmonic content.
The sawtooth has even-numbered harmonics and the square wave has
odd-numbered harmonics. (Perform a web search on this if you want to
learn more.)
• The triangle wave (Oscillator B only) has very few harmonics. It’s
useful used alone for its pure tone, or in combination with another
oscillator to reinforce the fundamental pitch of a sound and add weight.
Next, you’ll use the lter to shape the raw sound of the sawtooth wave.
To adjust the lter:
1. Press and hold down a key and turn 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 counterclockwise you’ll lter out all frequencies and hear
nothing.
2. Return the cutoff knob to 3 and the turn the Filter Envelope’s envelope
amount knob to a value of 5.