Modor OS007, User Manual

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3.3. BASS DRUMS CHAPTER 3. DRUM SYNTHESIZER
3.3 Bass drums
3.3.1 Drive BD
The first bass drum model is the Drive BD. This model uses a very basic sinewave
bassdrum, that has a parallel drive&filter path that can be mixed with the dry sine
bassdrum to get harmonic overtones in a certain frequency range.
The sinewave oscillator creates a basic bassdrum sound using the pitch, pitch en-
velope and amp envelope settings. Then, the signal is split and routed directly to the
output, and to the drive and filter part.
In the drive and filter part, the basic sinewave is overdriven and clipped using a
quite hard saturation curve. This creates a broad range of overtones on top of the basic
sinewave frequency. This clipped sound is then filtered using a resonant 12dB/oct
bandpass filter, and finally overdriven and clipped again with a softer saturation curve
to get some overtones of the filter and/or resonance frequency. The result of this can
be dry/wet mixed with the original unaltered sinewave bassdrum.
• X controls the bandpass filter cutoff
• Y controls the bandpass filter resonance, upto self oscillation
• Z controls the overdrive gain
• T controls the dry/wet mix
DRIVE BD
AMP MIX OUT
PITCH
ENV
AMP
ENV
T
Z
X,Y
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