GameCult/AquaSynth
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base: GameCult:main
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GameCult:main
GameCult:aqua/faust-linux-render
GameCult:docs/soundscape-grammar
GameCult:aqua/thruster-patch
GameCult:aqua/setcontrols-no-alloc
GameCult:faust-loader-platform-aware
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compare: GameCult:aqua/thruster-patch
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GameCult:aqua/faust-linux-render
GameCult:docs/soundscape-grammar
GameCult:aqua/thruster-patch
GameCult:aqua/setcontrols-no-alloc
GameCult:main
GameCult:faust-loader-platform-aware
Author SHA1 Message Date
Aqua
c6561da8d4 thruster: v5 gain term 0.9-0.5*load plus 0.425 output trim 
Peak under 0.4 at rpm 600, rpm 4800 and the 600-4800 sweep.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
 2026-10-31 20:54:51 +00:00
Aqua
882b7203f5 thruster: lower hull-mode Q and soft-limit the rattle so high rpm is louder than low rpm 
Hull modes Q 40/35/30/25 -> 20/18/16/14; tanh on the rattle alone; drive floor 0.1 -> 0.35.
Linux render, 48 kHz, 512-frame blocks: rpm 4800 steady RMS 0.1252 > rpm 600 0.0850; peaks 0.216/0.354/0.325.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
 2026-10-31 20:48:55 +00:00
Aqua
e567b44c24 thruster: drive falls with load so tanh no longer pins the peak at high rpm 
Drive 2.2 -> max(0.1, 0.9 - load); rasp load weight 0.6 -> 1.5.
rpm=4800 peak 0.500 -> 0.358.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
 2026-10-31 20:45:51 +00:00
Aqua
36ff76f03a Add thruster Faust patch with an rpm control 
Sustained heavy thruster: low rotor rumble, blade-chopped noise rasp,
high-Q hull rattle modes, tanh clip. Compiled as Faust source through
CompileSource; not a .aqua script and not indexed in library.yaml.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
 2026-10-31 20:42:06 +00:00
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// thruster: sustained, heavy, brittle-hull thruster with an RPM control.
// Compile as Faust source (AquaSynthPatchCompiler.CompileSource); it is not a .aqua script.
// Control: rpm (300..6000). Rotor tone = 28 Hz + rpm*0.025 (about 36..180 Hz); three blades chop the rasp at 3x that.
declare name "thruster";
import("stdfaust.lib");
rpm = hslider("rpm", 1200, 300, 6000, 1) : si.smooth(ba.tau2pole(0.2));
load = (rpm - 300) / 5700;
shaft = 28 + rpm * 0.025;
// effort: slow random wander of the shaft speed
wander = no.noise : fi.lowpass(2, 5) : *(0.35);
f0 = shaft * (1 + 0.04 * wander);
// low rumble: saw at shaft speed plus a square a sub-octave down, low-passed
rumble = (os.sawtooth(f0) + 0.7 * os.square(f0 * 0.5)) : fi.lowpass(3, 60 + 2.5 * shaft);
// blade pass: rasp noise chopped at 3x shaft, band tracks rpm
chop = 0.5 + 0.5 * os.osc(f0 * 3) ^ 2;
rasp = no.noise : fi.resonbp(700 + rpm * 0.6, 1.5, 1) : *(chop);
// brittle hull: high-Q modes rattled by noise, louder with load; tanh on the rattle alone keeps ring-up spikes from setting the peak
mode(f, q) = no.noise : fi.resonbp(f, q, 1);
rattle = (mode(173, 20) * (0.3 + 0.7 * load) + 0.8 * mode(311, 18) + 0.6 * mode(467, 16) + 0.4 * mode(1130, 14)) * (0.1 + 0.9 * load ^ 2) * 3 : *(4) : ma.tanh : /(4);
mix = rumble * (0.5 + 0.5 * load) + rasp * (0.3 + 1.5 * load) + rattle;
// drive falls only gently with load so tanh stays out of saturation while high rpm still ends up louder than low rpm
// final 0.425 trim keeps peak under 0.4 at rpm 4800
process = mix * (0.4 + 0.6 * load) * (0.9 - 0.5 * load) : ma.tanh : *(0.425);