Virtual analog models of vintage drum machines using Vult DSP technology
9 individual drum modules with CV control for full modularity
Drum machine module for quick patching, stereo mixing, and global accent/tune
Each of the 9 standalone drum modules simulate the sound of an analog circuit based on classic drum synthesizer hardware. To trigger drum modules, click the trigger button or patch a trigger signal into the TRIG input and a drum sound will be played from the module’s audio output. For example, you can use a sequencer, random gate generator, or VCV MIDI-Gate with a MIDI controller to trigger drum modules.
On each drum module, the TUNE knob and CV input controls the pitch or size of the drum, except Clap which is pitchless and uses TONE instead.
ACC produces an accented drum sound when the drum is triggered with GATE, and the intensity of the accent can be adjusted. Some drum modules increase their volume when accented, while others increase transient intensity/harmonics.
SWEEP specifies the starting pitch of the drum’s transient, relative to the final lower pitch. ATTACK specifies the intensity of the transient. DECAY controls the time of the drum decay.
Two models are available by right-clicking on the panel, based on an 808- and 909-like kick drum circuit.
See Kick for parameter descriptions.
Three models are available by right-clicking on the panel: Low, Mid, and High, having different harmonics of the oscillators.
METAL controls the amount of metalicity of the cymbal. 0% METAL sounds more noise-like, and 100% METAL sounds more resonant (metallic). ATTACK controls the strike intensity, and DECAY controls the envelope of the cymbal.
MUTE closes/chokes the closed hi-hat sound when triggered. It is a good idea to patch the open hi-hat gate into this input, so that only one hi-hat is played at a time.
See Closed Hat for parameter descriptions.
MUTE chokes the open hi-hat sound when triggered. It is a good idea to patch the closed hi-hat gate into this input, so that only one hi-hat is played at a time.
See Closed Hat for parameter descriptions.
See Closed Hat for parameter descriptions.
This larger module combines all 9 drum instruments, with two tom channels, into a compact stereo drum mixer. All drum parameters are available with CV modulation inputs.
The global TUNE and ACC inputs and attenuverters affect the tune and accent of all drum channels. For example, you can send a gate from your sequencer to the ACC input to accent all instruments playing on a specific step. The two CV inputs are normalized to 10V, so when unpatched, the attenuverters can be adjusted to apply a constant pitch or accent adjustment to all drum instruments.
Each channel’s volume can be adjusted with VOL with up to 12 dB of gain. The PAN knob pans the channel left or right, with pan-law scaling like VCV Console.
Vult DSP article: The Making of VCV Drums
Wolfram article: Modeling Analog Drums with the Wolfram Language and System Modeler