Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.
Command
$ sb get HHYK52D9Y6@1 -o payment-declined.wav
How it's made
Source
two soft felt-mallet taps on a warm wooden tone bar, played as a falling minor interval (default a minor third), the second note a little quieter than the first.
Body
each note is a strong fundamental plus a weak, quickly fading 2nd partial and a very faint 3rd partial (2.0×, 3.01×); a gentle low-pass keeps the timbre dull and round.
Excitation
a few milliseconds of low-passed noise (the felt thump) at the strike, whose cutoff follows the pitch and the brightness control.
Envelope
a 4 ms rounded attack, then an exponential decay of 0.12–0.7 s; the notes overlap slightly and the whole phrase is closed by a short fade.
Variation
root pitch, interval size, note spacing, ring time and brightness; `rng` detunes each partial by a fraction of a percent so the tone is not perfectly synthetic.
Parameters
Parameter
Range
Default
Unit
Controls
pitch
220 – 880
440
Hz
Pitch
interval
1 – 8
3
—
Interval (semitones)
spacing
0.08 – 0.4
0.17
s
Spacing
decay
0.12 – 0.7
0.3
s
Ring
warmth
0 – 1
0.35
—
Brightness
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.