Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.
Command
$ sb get 0GD36TQEFH@1 --preset phase-sweep -o tractor-beam.wav
How it's made
Source
an energy field gripping an object. Modelled as a low pull hum (detuned saw pairs at ~55 Hz plus a 110 Hz sine) and a mid "beam" tone near 520 Hz with weak 2nd and 3rd partials.
Body
the hum is low-passed (~220-680 Hz) so only a warm pull remains; the beam tone is low-passed with a gentle slope so no partial rings harshly; a band-passed pink-noise field adds the energy "air".
Envelope
continuous. The beam pitch rises and falls once per 8 s (+-4 %) as the object is dragged closer; a 2-10 Hz vibrato (the warble) deepens at the swell peak; a slow 0.25 Hz amplitude swell breathes.
Modulation
the detuned hum pair beats at 0.25 Hz (slow phasing); the noise band-pass sweeps in opposite directions in left and right channels (0.125 Hz), giving a phasing, widening stereo motion.
Variation
rng sets the beam pitch (+-3 %) and noise streams; presets change warble speed and depth, hum weight, brightness, phasing depth and beam pitch.
Parameters
Parameter
Range
Default
Unit
Controls
pull
0 – 1
0.6
—
Pull hum
warble
0 – 1
0.5
—
Warble depth
brightness
0 – 1
0.5
—
Brightness
phasing
0 – 1
0.5
—
Phasing
warbleRate
2 – 10
6
Hz
Warble rate
pitch
300 – 900
520
Hz
Beam pitch
spread
0 – 1
0.8
—
Width
seed
int
1
—
Variation, reproducible
The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.