Sources and method

Recordings

The ambient sounds are short clips (30 to 90 seconds) of recordings their authors placed in the public domain (CC0) on BigSoundBank and Freesound. Each clip is crossfaded to loop seamlessly, cleaned of infrasound and leveled to the same loudness. The photos come from Wikimedia Commons, in the public domain or under a CC0 license.

Nature and ambience

Thunderstorm — Storm and rain #4 (BigSoundBank 2719), https://bigsoundbank.com/storm-and-rain-4-s2719.html

Airbus A330 — Airplane cabin ambience, Airbus A330-300 (FillSoko, Freesound 456092), https://freesound.org/people/FillSoko/sounds/456092/

Boeing 737 — 737 Plane Flight, passenger cabin (courter, Freesound 447825), https://freesound.org/people/courter/sounds/447825/

Waves — Sea of the beach of Dellec #2 (BigSoundBank 2565), https://bigsoundbank.com/sea-of-the-beach-of-dellec-2-s2565.html

Wind — Forest, wind in the trees (BigSoundBank 0904), https://bigsoundbank.com/forest-wind-in-the-trees-s0904.html

Micheline — Inside an old Micheline railcar (BigSoundBank 0212), https://bigsoundbank.com/car-micheline-s0212.html

Night train — Lonely Train Ride (bassboybg, Freesound 218925), https://freesound.org/people/bassboybg/sounds/218925/

Train carriage — Train car (BigSoundBank 2727), https://bigsoundbank.com/train-car-s2727.html

Fireplace — Fireplace #3 (BigSoundBank 2855), https://bigsoundbank.com/fireplace-3-s2855.html

Stream — Watercourse 5.2 (BigSoundBank 3137), https://bigsoundbank.com/watercourse-5-2-s3137.html

Rain on the terrace — Summer rain on terrace (BigSoundBank 1019), https://bigsoundbank.com/summer-rain-on-terrace-s1019.html

Rain on an umbrella — Rain under an umbrella (BigSoundBank 2679), https://bigsoundbank.com/rain-under-an-umbrella-s2679.html

Fan — Electric fan #2 (BigSoundBank 0079), https://bigsoundbank.com/electric-fan-2-s0079.html

Café — Restaurant #2 (BigSoundBank 3376), https://bigsoundbank.com/restaurant-2-s3376.html

Fridge — Fridge (BigSoundBank 1157), https://bigsoundbank.com/fridge-s1157.html

Dishwasher — Dishwasher (BigSoundBank 1002), https://bigsoundbank.com/dishwasher-s1002.html

Purring cat — Cat purring #2 (BigSoundBank 0981), https://bigsoundbank.com/cat-purring-2-s0981.html

Purring cat (deep) — Cat purring #3 (BigSoundBank 1010), https://bigsoundbank.com/cat-purring-3-s1010.html

Forest birds — Forest #3 (BigSoundBank 2715), low end and hiss reduced, https://bigsoundbank.com/forest-3-s2715.html

Garden birds — Birds waking #4 (BigSoundBank 1906), https://bigsoundbank.com/birds-waking-4-s1906.html

Corrections

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