siren

siren is an infinite ascending / descending pitch illusion effect. 5 frequency bands sweep through playback rates, fading in and out at the edges. records input into a 4-second circular buffer, then plays back at 5 staggered rates modulated by a shared LFSaw oscillator. direction controls the crossfade between ascending and descending sweep.

toggle behaviors

band count (toggle a):

• 3 bands: sparse, minimal overlap, airy texture
• 5 bands: standard, balanced density
• 7 bands: dense, rich overlap, full texture

octave behavior (toggle b):

• clean: perfect octave relationships (2x, 4x, 8x, etc.)
• detuned: slight random pitch variations (±5 cents per band)
• broken: larger random jumps (±50 cents) or occasional octave skips

crossfade curve (toggle c):

• smooth: linear crossfade between bands (default)
• stepped: quantized crossfade (8-16 discrete steps)
• random: stochastic crossfade (random amplitude per band)

footswitch

freeze (footswitch l): hold to freeze the sweep at the current position. release to resume.