Modulation
Undertow
A tremolo that swings the volume in time: a harmonic one in the style of early-'60s amps, its lows and highs swirling in opposite phase, or a bias, optical or pan tremolo, free or locked to the song's tempo.
free
Every control, as its hover label says it in the plugin.
| Control | What it does | Range | Default |
|---|---|---|---|
| Mode | Harmonic swirls the lows against the highs, the early-'60s amps' way; Bias turns the whole level down and up; Optical does the same through a lamp's softer lag; Pan sways the sound between the sides. | Harmonic, Bias, Optical, Pan | Harmonic |
| Rate | How fast it swings, in cycles a second; with Sync on Clock, a note value at the song's tempo. | 0.1 to 15 Hz | 4 Hz |
| Sync | Free swings at Rate in cycles a second; Clock locks the swing to the song, Rate's knob picking a note value. | Free, Clock | Free |
| Division | The note value one swing lasts, on Rate's knob while Sync is on Clock. | 1/1, 1/2., 1/1T, 1/2, 1/4., 1/2T, 1/4, 1/8., 1/4T, 1/8, 1/16., 1/8T, 1/16, 1/32., 1/16T, 1/32 | 1/8 |
| Depth | How far it swings: at 0 the input passes untouched, at 100% the dips go all the way down. | 0 to 100 % | 50 % |
| Shape | The swing's wave: a smooth sine at 0, choppier as it turns, nearly a square at 100%. | 0 to 100 % | 0 % |
| Crossover | Where Harmonic splits the lows from the highs. | 100 to 4000 Hz | 700 Hz |
| Spread | Runs the right side's swing behind the left's, half a cycle at 100%, so Harmonic's swirl moves across the sides: 0 keeps them together (Pan already sways side to side). | 0 to 100 % | 0 % |
| Mix | How much of the swing you hear: at 0 the input passes untouched. | 0 to 100 % | 100 % |
The pedal as the plugin draws it: each of its looks.
What goes in and what comes out.
- InIn
The signal into the tremolo, each side through its own gain stage.
- OutOut
The signal with the tremolo on it, in stereo.
- LFOOut
The swing itself, each side's wave times its Depth, at its top on the beat: patch it to move anything in time with the tremolo.
- WetOut
The tremolo at full Mix, whatever Mix says: the swing at its Depth alone, in stereo.