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DUUUUUUUUUURRRM

Drum Machine Alternate Instrument

For QuBit Nebulae v.2 - By Eli Pechman

Durm is a four voice drum machine where all of the voices share the
same parameters as set by the front panel controls.  There are two
ways around this: drum settings are only updated for each voice
when a trigger for that voice is received, meaning that with fast
enough modulation each voice will have settings that differ from
the other voices.  The other possibility is to "lock" the parameters
for the given voice, causing the front panel controls and relevant
modulation to no longer have an effect on that particular drum voice.
This enables the user to tweak the settings for each drum voice to
their liking and then have the option to only modulate the 'unlocked'
voices.  The "speed" knob controls an effect that is shared over all
of the voices with one of four effects being selected by an alternate
control.  All parameters (except for window, pitch and speed) can be 
randomized per step with a set randomness amount.  Audio inputs are
routed through the main effect and also through a side chain comp-
ression sort of effect controlled by the internal synthesizer envel-
opes.  Bass drum is always routed to the left channel and all other
drums are routed to the right.  Controls for each voice are as follows.

Summary of Contents for Nebulae

Page 1: ...nt modulation to no longer have an effect on that particular drum voice This enables the user to tweak the settings for each drum voice to their liking and then have the option to only modulate the un...

Page 2: ...ation Amount Non linearity Amplitude Ebvelope Decay Brightness Distortion Pitch The bassdrum consists of 3 sine wave oscillators that are all ring modulated and then sent through a low pass filter Non...

Page 3: ...lope Decay Brightness White noise mix in Pitch The snare drum is a clocked noise source being fed into a filter The feedback knob sends the output of the noise sample and hold into the clock frequency...

Page 4: ...f White noise high pass amount Pitch The high hat is a set of ring modulated oscillators and white noise with both high pass and low pass controls The closed high hat decay is a preset fraction of the...

Page 5: ...ch 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...

Page 6: ...ed drum reset for both highhats Next and reset buttons do not display the freeze state of the drums due to the nature of the nebulae so a few attempts may need to be made to correctly freeze these dru...

Page 7: ...thing different when the speed knob is left of center versus right of center indicated by the two LEDs next to the speed knob The durm program boots with the trigger randomizer by default trigger rand...

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