Pipe Organ Drone

How it's made

Source

sustained flue-pipe air columns; additive harmonics model stable edge-tone oscillation, with independent filtered turbulence at each mouth (350-2600 Hz), not a broadband hiss bed.

Body

a 49-82 Hz pedal supports an octave-spaced chord; 8-foot and 4-foot ranks use partials 1-6 with a strong fundamental, weak even harmonics for the soft stopped-flute registration.

Envelope

pipes speak over 0.35-0.75 s, higher ranks slightly later; keys sustain until the last 1.6 s, then release over 0.7 s into the hall. The renderer supplies the final edge fades.

Modulation

shared wind pressure wanders at 0.12 Hz with only 2 percent amplitude movement; independent pipe tuning drifts below 0.4 cents, preserving a steady chord without vibrato.

Space

a large hall is integral to the sacred drone; 40-63 ms reflections and a damped 3.5-5.5 s reverberation spread the upper pipes while keeping the low pedal centred.

Variation

seeded pipe offsets within 0.7 cents and mouth noise; presets change harmony, register balance, pedal pitch, air and hall depth rather than merely changing output gain.

The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.