Modor OS007, User Manual

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3.3. BASS DRUMS CHAPTER 3. DRUM SYNTHESIZER
3.3.2 Noise BD
A second bassdrum model is the Noise BD. In this bassdrum model a triangle oscil-
lator creates a basic bassdrum, using the pitch and pitch envelope. It is then clipped
using a soft saturation curve that ’rounds the corners’, such that the result approaches
a sinewave, but still contains a small amount of the lower harmonics. This technique is
often used in classic analog machines to make ’sinewaves’.
Next to this, there is a noise oscillator that gets filtered by a bandpass filter and gets
it’s volume set by a noise envelope. The wave and noise parts finally get mixed and
sent to the output.
The noisy part can be used for example to create very short init clicks or to make
longer, low filtered attack noises that make it sound more like a physical bassdrum. Or,
the noise part can be disabled by turning down the noise-wave balance (Y) if you just
want the overdriven triangle oscillator alone, to get a classic electronic-style bassdrum
sound.
• X controls the noise filter frequency
• Y controls noise/wave mix
• Z controls the wave clipping overdrive gain
• T controls the noise envelope decay rate
NOISE BD
MIX AMP
AMP
OUT
PITCH
ENV
Z
AMP
ENV
X
NOISE
ENV
T
Y
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