Helix
A split band tremolo with separate low and high depth and manual or tempo synced rate.
Overview
Helix splits the incoming sound into low and high frequency bands and inversely modulates their amplitudes.
The Low & High Bands
The Freq Split dial sets the crossover point of the incoming signal. Each side of the split is modulated by the same sine wave, but inversely. You can imagine that if the low side is at the peak of the sine wave, then the high side is at the trough. That said, each side of the split has an independent depth dial, Low and High. Keeping Low shallow and raising High will modulate the incoming signal’s higher frequency range, while leaving its low end steady. Reversing that balance gives the low end more modulation while the upper detail remains more constant.
Setting the Freq Split dial to one extreme or the other essentially makes Helix behave like a regular tremolo, where one band contains the entire frequency spectrum.
Free & Synced
Use the Rate dial for setting the modulation to a fixed speed (in hertz), or BPM Sync to sync it to the project tempo. Slow settings make the changes feel like broad swells and faster settings turn them into a more obvious rhythmic texture.
Properties
| Property | Value |
|---|---|
| Processes Audio | Yes |
| Tempo Sync | Optional |
| Sequencer Driven | No |
Controls
| Control | Description | Default | Minimum | Maximum | Units | Options |
|---|---|---|---|---|---|---|
| Freq Split | Sets the crossover frequency between low and high bands. | 1000 | 100 | 20000 | Hz | |
| Low | Sets tremolo depth for the low band. | 1 | 0 | 1 | Gain | |
| High | Sets tremolo depth for the high band. | 1 | 0 | 1 | Gain | |
| Rate | Sets the modulation speed when BPM Sync is not selected. | 1 | 0.01 | 20 | Hz | |
| Mix | Blends the tremolo signal with the dry signal. | 0.5 | 0 | 1 | Gain | |
| BPM Sync | Sets the modulation speed from tempo synced note values. | 1/8 | Tempo Sync | 1/32, 1/16, 1/8, 1/8., 1/4, 1/4., 1/2, 1/2., 1m, 2m, 3m, 4m |