Melody / Help / Modulation / Effort
Effort
EFFORT / EXPRESSION — a living EXCITATION source. The general form of a bellows, a breath, a bow, a wheel, a pump, or a hand: a TARGET (its Push dial, a MIDI CC / aftertouch bound to Push, or a CV wired into its input) becomes a correlated 0..1 effort — shaped by an input CURVE, slewed with air/mass INERTIA (it can't jump; it commits fast and relaxes slow, by the Slew asymmetry), gated by a HYSTERESIS deadband (ignores a noisy CC's jitter), and — at rest — breathed by an AUTO-IDLE LFO so a HELD note swells with NO input at all. Its unipolar EFFORT drives brightness / loudness / air / pitch through the mod cables: wire cv_out → an Attenuverter → any param (each route can carry its own response curve). The excitation half of every bellows/breath/bow/wheel instrument. Melody-owned (bellows-rt), the DSP a curved, slewed, hysteretic one-pole in Rust.
Inputs
| Port | Signal |
|---|---|
| Target | audio · norm |
Outputs
| Port | Signal |
|---|---|
| Effort | audio · unipolar |
Parameters
| Parameter | Range | Default |
|---|---|---|
| Push | 0 – 100 % | 0 |
| Inertia | 0 – 100 % | 30 |
| Hysteresis | 0 – 100 % | 5 |
| Idle Depth | 0 – 100 % | 12 |
| Idle Rate | 0.02 – 4 Hz | 0.2 |
| Curve | 0 – 100 % | 40 |
| Slew | 1 – 4 x | 1.7 |
Used in these rigs
Bowed Pad (Tasto · Normale · Ponticello) · Drone (Harmonium · Bagpipe) · Squeezebox (Accordion · Bandoneón) · Wind (Flute · Clarinet · Oboe · Sax)
More modulation nodes
ADSR · Attenuverter · Auto Gate · Auto-filter · Auto-pan · Chorus · Curve · DJ Filter · Env Follower · Flanger · Frequency Shifter · Leslie Speaker