Percussion Drum
Triggered by the "Freeze" input
Harmonic ratio
numerator
Harmonic
ratio
denominator
Modulation
Amplitude
envelope
decay
Brightness
Waveform
Base
Pitch
The percussion drum is a four operator phase
modulation voice with operator frequencies
set by an integer numerator/ denominator ratio.
The 'blend' knob will increase phase modulation
amount from each operator to the next, waveform
crossfades between a sine wave and a tangent
(similar sound to a saw tooth). Brightness
controls cutoff frequency of a low pass filter.
