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Noise Engineering
Basimilus Iteritas Alter
Analog-inspired parameterized drum synthesizer
Type
LFSR VCO
Size
10HP Eurorack
Depth
1.5 Inches
Power
2x8 Eurorack
+12 mA 150 / 80 (if 5v on)
-12 mA
5 / 5
+5 mA
0 / 90 (optional)
Basimilus Iteritas Alter is a parameterized digital drum synthesizer with its
roots in the analog world. At its heart, it is a simple six-oscillator additive
synthesizer with adjustable waveform, harmonic spread and decay. Adjustable
attack including a noise oscillator is also included. ese are summed and fed
into an in nifolder for crunch and variety.
Basimilus Iteritas Alter is an improved version of Basimilus Iteritas. It is 2HP
smaller, includes CV of switches, adds an third mode, and pitch range and
knobs know offset rather than attenuate.
1
Basimilus
Iteritas
Alter
Morph
Attack
Pitch
Spread
Decay
Fold
Skin
Liquid
Harmonic
Bass
Alto
Treble
HIT
Pitch
Attack
Spread
Morph
Decay
Trig
Harm
Fold
Metal
S/L/M
B/A/T
Out
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Summary of Contents for Noise Engineering Basimilus Iteritas Alter
- Page 1 Pitch Attack S/L/M Basimilus Iteritas Alter is an improved version of Basimilus Iteritas. It is 2HP smaller, includes CV of switches, adds an third mode, and pitch range and knobs know offset rather than attenuate. Spread...
- Page 2 Noise Engineering Basimilus Iteritas Alter Analog-inspired parameterized drum synthesizer Interface Pitch e pitch knob and CV input adjusts the pitch of the fundamental oscillator. Basimilus is is a 1v/8va standard input. e knob sums with the CV input. Iteritas Alter...
- Page 3 3 V. Trig Harm Fold e Hit switch allows one to manually trigger Basimilus Iteritas Alter. e output is a low-impedance audio source. e output varies signi cantly based on the parameterization as compensation for loudness occurs.
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Page 4: Tone Generation
Analog-inspired parameterized drum synthesizer Tone Generation Basimilus Iteritas Alter uses six tonal and one noise oscillator in three con gurations to generate sound. e SKIN setting is a basic additive synthesizer meant to simulate instruments that have modes that do not interact. -
Page 5: Voltage Supply
Peterson 490 to tune to an octave interval. is is method is preferred to the meter-only method. Voltage Supply Basimilus Iteritas Alter can run its processor on the 5V eurorack power rail to reduce noise and load on the 12V bus. Gently push the switch tab in the direction of the desired rail to use. - Page 6 Noise Engineering Basimilus Iteritas Alter Analog-inspired parameterized drum synthesizer Genesis and Design Notes Basimilus Iteritas started out as something very different than where it ended. I had been reading Stefan Bilbao’s Numerical Sound Synthesis and was thinking about building a drum simulator out of a set of numerical oscillators.
- Page 7 Neuron to play with which made me very quickly realize how much fun a pitch envelope would be. Within a few hours this was prototyped and was slated for inclusion on the upcoming hardware revision. I hope you have as much fun with Basimilus Iteritas Alter as I had designing it!
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Page 8: Special Thanks
Noise Engineering Basimilus Iteritas Alter Analog-inspired parameterized drum synthesizer Special Thanks Kris Kaiser Shawn Jimmerson Christopher Randall Basimilus William Mathewson Iteritas Alter Mickey Bakas Tyler Thompson Alex Anderson Morph Attack Pitch Spread Decay Fold Skin Liquid Metal Harmonic Bass Alto...