Audio reactivity, tempo & LFOs

Every setting with a slider — a visual's speed or colour, its opacity, an effect's amount — can be driven by a source instead of your finger. Tap the setting's row to open it, then pick one source: Audio, an LFO, MIDI, hand or face Tracking (iPhone and iPad), or an Envelope. One source drives a setting at a time. Reactive features are part of Pro.

1. 1

   In Play → Adjust (or on an effect), tap the setting you want to move — for example Speed.

2. 2

   Under Audio, tap Bass, Middle, Treble or Volume. Allow the microphone when asked.

3. 3

   Drag the two handles to set the range the music sweeps between. Flip reverses it; Clear removes the link.

4. 4

   Tap ✓. The strip at the top reads, for example, Audio active – Bass.

Tap the wrench next to Audio (or Configure under Audio Bands in the Reactive menu) to open Audio Sync. It applies to every visual in the project.

• Spectrum — drag the Bass, Mid and Treble handles to the frequencies that matter in your music (defaults 80 Hz, 2 kHz and 8 kHz).
• Input — choose the microphone or a connected audio input.
• Gain — Auto adapts to how loud the room is; switch it off to set it yourself.
• Band Settings — Gate, Attack, Release, Dynamics and Sustain shape how each band moves. Leave them on Auto unless the reaction feels too jumpy or too slow.

Open the menu ☰ in Play → Reactive. Under Tempo, Auto listens for the beat through the microphone. Tap Tap in time with the music to set it yourself, or use − and + (30–240 BPM). Changing the BPM by hand turns Auto off. LFOs set to Sync to BPM follow this tempo.

An LFO moves a setting back and forth by itself. There are four (LFO 1–4); pick one in a setting's Modulation section. Tap the wrench next to it to choose the waveform (Sine, Triangle, Saw or Square) and the speed: Sync to BPM (4/1 to 1/8 notes) or Free (0.05–5 Hz).

Link several settings to the same LFO and they move in lockstep.

An Envelope plays a shape on a setting each time it's triggered — perfect for flashes on a kick drum. In a setting's Generator section, tap Envelope, then the wrench:

• Source — Audio (a band rising past the Trigger Point) or MIDI (a note or CC from your controller).
• Mode — One Shot plays the whole shape on every hit; Gate holds while the trigger stays on.
• Shape — Attack, Decay, Sustain and Release, like a synth envelope.

In a setting's Tracking section, choose Hand or Face and an axis — X, Y, Rotation or Distance (hand only). The front camera follows you and the setting moves with you. Preview opens the camera view, where you can show the visual and tune the input and output ranges.