Aquarium Bubbles

How it's made

Source

aquarium aeration releases many small air cavities; Minnaert bubbles model their damped rings.

Body

0.85–3.0 mm radii give roughly 1.1–3.8 kHz; occasional 2.4–5.4 mm bubbles add 0.6–1.4 kHz plops. Each cavity chirps upward by 5–22 percent and decays naturally, rather than sustaining a fixed tone.

Envelope

small events arrive at 10–52/s, with slow irregular airflow drift; larger events at 1–4/s. A 0.7 ms onset ramp prevents discontinuities; each voice has a 180–280 ms safety release.

Layers

surface film ruptures add quiet 4–13 ms filtered noise; a faint 0.5–3 kHz turbulent water bed breathes with airflow. No pump hum, glass ringing or room reverb is included.

Variation

independent seeded streams vary radius, strength, chirp, event timing and stereo position. Size sets the radius distribution, airflow sets density, and surface controls rupture detail.

Presets

gentle column is sparse and intimate; fine diffuser is dense and bright; rounded bubbles are lower and separated; surface fizz combines dense bubbles with more pronounced film ruptures.

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