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Curves and Timing

Each slot plays one hand-drawn curve. Shape it, then decide how fast it runs and what starts it.

Draw a curve

The curve editor shows one cycle of the movement, left to right. A thin line shows where the cycle is playing.

To do thisDo this in the curve editor
Add a pointClick empty space. Keep holding to drag it into place.
Move a pointDrag it.
Bend a segmentDrag the handle in the middle of the segment up or down.
Delete a pointRight-click it. The first and last points stay.
Start from a shapeRight-click empty space, or click Shape.

A curve can have up to 32 points.

Shape

Loads a starting shape into the curve.

Choose Ramp Up, Ramp Down, Triangle, Sine, Square or Exponential, then edit from there.

Sync and length

Sync or FreeDefaultSync, 1 bar

Locks the cycle to your DAW's tempo.

With Sync, choose a length from 1/32 to 16 bars, including triplet (T) and dotted (D) values. With Free, the cycle runs at its own Rate.

Rate

Range0.01 – 20 HzShownFree

Cycles per second when the slot runs free.

For a triggered curve, Rate sets how long one pass takes.

Mode

Loop, Ping Pong, One ShotDefaultLoop

Sets how the curve plays.

  • Loop repeats the curve.
  • Ping Pong plays it forwards, then backwards.
  • One Shot plays it once from a trigger and rests at its end.

For One Shot, draw a curve that ends at zero, such as Ramp Down. It rests at its end between triggers, so it idles with no modulation and only moves when fired.

Phase

Range0 – 1

Shifts where in the curve the cycle starts.

Smooth

Range0 – 200 ms

Rounds off hard edges so they don't step or click.

Trigger

Clock, Transport, Audio, MIDIDefaultClock

Chooses what restarts the curve.

TriggerWhat restarts the curve
ClockThe DAW timeline. Loop and Ping Pong follow the song position. One Shot fires when playback starts.
TransportEvery time playback starts.
AudioThe input crossing the Thresh level. If the compressor's detector uses the external sidechain, the sidechain is what's heard.
MIDIAny MIDI note sent to the plugin. How you route MIDI to an effect depends on your DAW.

Once fired, a triggered curve runs for its synced length (at the song tempo) or its free Rate. A Trig lamp flashes in the corner of the curve editor each time a trigger fires.

Thresh

Range−60 – 0 dBShownAudio trigger

The input level that fires the Audio trigger.

It re-arms 6 dB below the threshold and never fires twice within 20 ms. Play the track and raise Thresh until the Trig lamp flashes once per hit.

On long, low notes such as 808s, a small audio buffer (64 or 128 samples) can make the Audio trigger fire again mid-note. Use a buffer of 256 samples or more, or lower Thresh.

Fire

Starts the slot by hand, whatever its trigger.

Use it to audition a One Shot shape without playing anything.

Pyrosphere 1.0.0 · Manual 1.0 · Updated November 10, 2026Questions? Contact support