MELT can self-oscillate as a percussion source while Wiretap derives separate rising and falling events from one stepped control voltage. The filter supplies the resonant tone, and Wiretap converts changes in the sequence into gates and short envelopes. No conventional oscillator is required for the core drum sound.
The patch works because pitch movement and event detection share the same source. One copy of the sequence influences MELT’s cutoff through FM2, while another enters Wiretap for rhythmic analysis. Upward and downward steps can then produce different percussion roles.
Keep MELT’s output VCA unpatched while tuning the raw tone. Its internally normalled voltage leaves the VCA open, which lets you hear the sustained resonance before adding rhythmic control. Adjust cutoff, resonance, and Core Temperature until the source has a stable body.
This establishes MELT’s self-resonating filter voice before Wiretap controls its duration. Troubleshooting is easier when the filter already produces a clear tone. If nothing is audible, solve resonance and output level before connecting the sequence.
Patch a stepped sequence into Wiretap, then route the same voltage to MELT’s FM2 input. Wiretap’s through-jack can mirror the unprocessed CV, avoiding a separate multiple. FM2’s attenuator determines how strongly each sequence value moves the resonant frequency.
Treat FM2 as expressive tuning control rather than guaranteed chromatic tracking. It is an attenuated cutoff-modulation input, not a stated calibrated one-volt-per-octave destination. Set the sequence range conservatively and tune the cutoff movement by ear.
Route Wiretap’s Step output into its first envelope trigger input, then send that envelope to MELT’s low-pass output VCA CV input. Every detected step change now opens the output around the sustained self-oscillation. The sequence determines event placement while the envelope determines decay.
Wiretap’s envelopes can reach 7.5 volts, matching MELT’s stated maximum VCA control level. This direct level relationship removes the need to boost the envelope before it opens MELT’s output. Start with a short release, then lengthen it until adjacent hits overlap only when intended.
The falling detector provides the second rhythmic condition. Wiretap’s second envelope is normally associated with falling events, so patch that envelope into MELT’s FM1 input. Each downward sequence step can now add a decaying cutoff sweep to the resonant hit.
Set FM1’s amount gently and check its polarity. A positive envelope with the normal direction can push cutoff upward at the attack and let it fall as the envelope decays, producing the familiar downward pitch contour of a synthesized kick. Reverse the polarity when the contour travels the wrong way.
This division creates event-driven drums from melodic voltage without programming separate trigger lanes. A falling step can produce the resonant bass-drum role, while the next rising step activates another part of the patch. Rhythmic structure follows the direction of the original sequence rather than a fixed clock pattern alone.
Wiretap’s Gate Time control determines how long that rising gate remains active. Short settings produce a tight noise tick, while longer settings leave a broader burst. Adjust MELT’s AUX control to keep the noise behind the resonant low-frequency hit rather than masking it.
The result assigns different sounds to opposite directions in one sequence. Rising values create the noise-based hat role, falling values trigger the swept resonant drum, and the general change envelope opens MELT’s final output. Repeated notes may create no new event because Wiretap responds to voltage change.
If hats appear but kicks do not, monitor Wiretap’s falling output and confirm the sequence contains downward steps. If the kick clicks without body, lengthen the first envelope release and reduce the FM1 sweep. If every noise burst sustains, verify that the rising gate is patched into AUX VCA CV and shorten Wiretap’s gate time.
Sequence shape controls the rhythm more than note names do. Alternating high and low values produces regular rising and falling events, while consecutive upward steps favor noise hits until the direction reverses. Small edits to voltage order can therefore rewrite the percussion pattern without changing its clock.
The patch works because pitch movement and event detection share the same source. One copy of the sequence influences MELT’s cutoff through FM2, while another enters Wiretap for rhythmic analysis. Upward and downward steps can then produce different percussion roles.
Self-resonance supplies the drum oscillator
Begin with MELT’s low-pass output connected to your mixer and no audio patched into its main inputs. Raise resonance until the filter self-oscillates, then move the cutoff into a useful drum range. A lower Core Temperature setting reaches self-oscillation earlier in the resonance control’s travel.Keep MELT’s output VCA unpatched while tuning the raw tone. Its internally normalled voltage leaves the VCA open, which lets you hear the sustained resonance before adding rhythmic control. Adjust cutoff, resonance, and Core Temperature until the source has a stable body.
This establishes MELT’s self-resonating filter voice before Wiretap controls its duration. Troubleshooting is easier when the filter already produces a clear tone. If nothing is audible, solve resonance and output level before connecting the sequence.
Patch a stepped sequence into Wiretap, then route the same voltage to MELT’s FM2 input. Wiretap’s through-jack can mirror the unprocessed CV, avoiding a separate multiple. FM2’s attenuator determines how strongly each sequence value moves the resonant frequency.
Treat FM2 as expressive tuning control rather than guaranteed chromatic tracking. It is an attenuated cutoff-modulation input, not a stated calibrated one-volt-per-octave destination. Set the sequence range conservatively and tune the cutoff movement by ear.
Wiretap divides one sequence into rhythmic roles
Wiretap detects when its input rises, falls, moves, or jumps. Its adjustable gate time is independent of the duration of the incoming step, so brief control changes can create short triggers or longer gates. That timing independence is crucial for turning melodic voltage into percussion.Route Wiretap’s Step output into its first envelope trigger input, then send that envelope to MELT’s low-pass output VCA CV input. Every detected step change now opens the output around the sustained self-oscillation. The sequence determines event placement while the envelope determines decay.
Wiretap’s envelopes can reach 7.5 volts, matching MELT’s stated maximum VCA control level. This direct level relationship removes the need to boost the envelope before it opens MELT’s output. Start with a short release, then lengthen it until adjacent hits overlap only when intended.
The falling detector provides the second rhythmic condition. Wiretap’s second envelope is normally associated with falling events, so patch that envelope into MELT’s FM1 input. Each downward sequence step can now add a decaying cutoff sweep to the resonant hit.
Set FM1’s amount gently and check its polarity. A positive envelope with the normal direction can push cutoff upward at the attack and let it fall as the envelope decays, producing the familiar downward pitch contour of a synthesized kick. Reverse the polarity when the contour travels the wrong way.
This division creates event-driven drums from melodic voltage without programming separate trigger lanes. A falling step can produce the resonant bass-drum role, while the next rising step activates another part of the patch. Rhythmic structure follows the direction of the original sequence rather than a fixed clock pattern alone.
Noise completes the split percussion voice
Patch white noise into MELT’s AUX input for the brighter percussion layer. AUX bypasses the resonant filter core and reaches the output stage directly. Sending Wiretap’s rising gate to AUX VCA CV makes the noise appear on upward steps.Wiretap’s Gate Time control determines how long that rising gate remains active. Short settings produce a tight noise tick, while longer settings leave a broader burst. Adjust MELT’s AUX control to keep the noise behind the resonant low-frequency hit rather than masking it.
The result assigns different sounds to opposite directions in one sequence. Rising values create the noise-based hat role, falling values trigger the swept resonant drum, and the general change envelope opens MELT’s final output. Repeated notes may create no new event because Wiretap responds to voltage change.
If hats appear but kicks do not, monitor Wiretap’s falling output and confirm the sequence contains downward steps. If the kick clicks without body, lengthen the first envelope release and reduce the FM1 sweep. If every noise burst sustains, verify that the rising gate is patched into AUX VCA CV and shorten Wiretap’s gate time.
Sequence shape controls the rhythm more than note names do. Alternating high and low values produces regular rising and falling events, while consecutive upward steps favor noise hits until the direction reverses. Small edits to voltage order can therefore rewrite the percussion pattern without changing its clock.
