# Sound sources and licences

Sound Studio V0.8f contains 79 sound choices. Third-party recordings retain their individual CC0 dedications and source credits. The live drones and six rendered effects use the established procedural synthesis. Procedural provenance does not establish exclusive copyright. Student recordings and imported audio stay browser-local unless deliberately exported.

Independent speed and pitch processing uses unmodified SoundTouchJS 0.3.0. Its separate replaceable module, map, full LGPL licence and corresponding source are included. See [third-party notices](vendor/THIRD-PARTY-NOTICES.md). No restriction is placed on replacing the LGPL library or debugging those modifications.

The BBC Sound Effects Archive is an optional external educational resource. No BBC recordings are included. Its separate [usage rules](https://sound-effects.bbcrewind.co.uk/licensing) apply.

## rain

Rain — Duasun.

Licence: CC0-1.0.

Source: https://freesound.org/people/Duasun/sounds/468024/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## knock

Door knocks — FrostyFrost.

Licence: CC0-1.0.

Source: https://freesound.org/people/FrostyFrost/sounds/348371/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## rumble

Deep rumble — Stark Drama.

Licence: Original Stark Drama synthesis; no third-party recording.

Source: lesson-one/audio-engine.js.

Licence URL: See the source and provenance notice.

## unsettling

Unsettling atmosphere — Stark Drama.

Licence: Original Stark Drama synthesis; no third-party recording.

Source: lesson-one/audio-engine.js.

Licence URL: See the source and provenance notice.

## wind

Wind — kevinklang.

Licence: CC0-1.0.

Source: https://freesound.org/people/kevinklang/sounds/841982/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## birds

Forest birds — Magnesus.

Licence: CC0-1.0.

Source: https://freesound.org/people/Magnesus/sounds/723913/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## leaves

Rustling leaves — giddster.

Licence: CC0-1.0.

Source: https://freesound.org/people/giddster/sounds/437356/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## steps

Footsteps — aevoy.

Licence: CC0-1.0.

Source: https://freesound.org/people/aevoy/sounds/254840/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## thunder

Thunder — AudioPapkin.

Licence: CC0-1.0.

Source: https://freesound.org/people/AudioPapkin/sounds/712017/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## drips

Cave drips — spookymodem.

Licence: CC0-1.0.

Source: https://freesound.org/people/spookymodem/sounds/249806/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## creak

Door creak — soundofsong.

Licence: CC0-1.0.

Source: https://freesound.org/people/soundofsong/sounds/647646/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## clock

Clock ticking — Froey_.

Licence: CC0-1.0.

Source: https://freesound.org/people/Froey_/sounds/818434/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## bell

Hand bell — WebbFilmsUK.

Licence: CC0-1.0.

Source: https://freesound.org/people/WebbFilmsUK/sounds/200318/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## crowd

Crowd murmur — SpliceSound.

Licence: CC0-1.0.

Source: https://freesound.org/people/SpliceSound/sounds/260122/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## stone

Stone footsteps — SecureSubset.

Licence: CC0-1.0.

Source: https://freesound.org/people/SecureSubset/sounds/813622/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## boots

Boot footsteps — Fission9.

Licence: CC0-1.0.

Source: https://freesound.org/people/Fission9/sounds/521590/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## hooves

Hooves along a street — skitchscharff.

Licence: CC0-1.0.

Source: https://freesound.org/people/skitchscharff/sounds/204961/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## carriage

Horse-drawn carriage — Garuda1982.

Licence: CC0-1.0.

Source: https://freesound.org/people/Garuda1982/sounds/631829/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## market

Outdoor market — kayaker25.

Licence: CC0-1.0.

Source: https://freesound.org/people/kayaker25/sounds/849935/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## town-bells

Distant town bells — ivolipa.

Licence: CC0-1.0.

Source: https://freesound.org/people/ivolipa/sounds/266525/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## wood-door

Wooden door open and close — LampEight.

Licence: CC0-1.0.

Source: https://freesound.org/people/LampEight/sounds/402464/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## shed-door

Slow door opening — colorsCrimsonTears.

Licence: CC0-1.0.

Source: https://freesound.org/people/colorsCrimsonTears/sounds/563538/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

## tension-pulse

Low tension pulse — Stark Drama prototype / original procedural synthesis.

Licence: Original procedural audio; supplied for local inclusion, redistribution and commercial use.

Source: original procedural synthesis in the retained Sound Studio engine; no third-party recording..

Licence URL: See the source and provenance notice.

No sampled recording, voice or third-party music. Original synthesis code and rendered files included.

## dramatic-impact

Dramatic impact — Stark Drama prototype / original procedural synthesis.

Licence: Original procedural audio; supplied for local inclusion, redistribution and commercial use.

Source: original procedural synthesis in the retained Sound Studio engine; no third-party recording..

Licence URL: See the source and provenance notice.

No sampled recording, voice or third-party music. Original synthesis code and rendered files included.

## suspense-rise

Rising suspense texture — Stark Drama prototype / original procedural synthesis.

Licence: Original procedural audio; supplied for local inclusion, redistribution and commercial use.

Source: original procedural synthesis in the retained Sound Studio engine; no third-party recording..

Licence URL: See the source and provenance notice.

No sampled recording, voice or third-party music. Original synthesis code and rendered files included.

## atmospheric-swell

Soft atmospheric swell — Stark Drama prototype / original procedural synthesis.

Licence: Original procedural audio; supplied for local inclusion, redistribution and commercial use.

Source: original procedural synthesis in the retained Sound Studio engine; no third-party recording..

Licence URL: See the source and provenance notice.

No sampled recording, voice or third-party music. Original synthesis code and rendered files included.

## metallic-texture

Unsettling metallic texture — Stark Drama prototype / original procedural synthesis.

Licence: Original procedural audio; supplied for local inclusion, redistribution and commercial use.

Source: original procedural synthesis in the retained Sound Studio engine; no third-party recording..

Licence URL: See the source and provenance notice.

No sampled recording, voice or third-party music. Original synthesis code and rendered files included.

## transition-whoosh

Transition whoosh — Stark Drama prototype / original procedural synthesis.

Licence: Original procedural audio; supplied for local inclusion, redistribution and commercial use.

Source: original procedural synthesis in the retained Sound Studio engine; no third-party recording..

Licence URL: See the source and provenance notice.

No sampled recording, voice or third-party music. Original synthesis code and rendered files included.

## office-phone

Office telephone — BennettFilmTeacher.

Licence: CC0-1.0.

Source: https://freesound.org/people/BennettFilmTeacher/sounds/610191/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## office-printer

Printer working — haus.the.child.

Licence: CC0-1.0.

Source: https://freesound.org/people/haus.the.child/sounds/839347/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## office-paper

Paper rustling — Spaghetto87.

Licence: CC0-1.0.

Source: https://freesound.org/people/Spaghetto87/sounds/731484/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## office-typing

Keyboard typing — Vsessa.

Licence: CC0-1.0.

Source: https://freesound.org/people/Vsessa/sounds/867687/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## school-bell

Electronic school bell — mpaol2023.

Licence: CC0-1.0.

Source: https://freesound.org/people/mpaol2023/sounds/370181/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## school-chair

Chair sliding — ME_Studios_Official.

Licence: CC0-1.0.

Source: https://freesound.org/people/ME_Studios_Official/sounds/656682/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## school-basketball

Basketball in a gym — DigPro120.

Licence: CC0-1.0.

Source: https://freesound.org/people/DigPro120/sounds/859910/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## school-corridor

Corridor footsteps — RaggedyAngst.

Licence: CC0-1.0.

Source: https://freesound.org/people/RaggedyAngst/sounds/546270/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## urban-traffic

Passing road traffic — gecop.

Licence: CC0-1.0.

Source: https://freesound.org/people/gecop/sounds/518411/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## urban-crossing

Pedestrian crossing signal — hz37.

Licence: CC0-1.0.

Source: https://freesound.org/people/hz37/sounds/792377/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## urban-siren

Distant ambulance siren — kyles.

Licence: CC0-1.0.

Source: https://freesound.org/people/kyles/sounds/451068/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## home-keys

Keys jingling — vmgraw.

Licence: CC0-1.0.

Source: https://freesound.org/people/vmgraw/sounds/235614/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## home-crockery

Crockery handling — Melilaura.

Licence: CC0-1.0.

Source: https://freesound.org/people/Melilaura/sounds/533371/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## home-tap

Kitchen tap — Joao_Janz.

Licence: CC0-1.0.

Source: https://freesound.org/people/Joao_Janz/sounds/473713/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## home-floorboard

Creaking floorboard — deleted_user_2104797.

Licence: CC0-1.0.

Source: https://freesound.org/people/deleted_user_2104797/sounds/164523/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## nature-crickets

Night insects — RyanKingArt.

Licence: CC0-1.0.

Source: https://freesound.org/people/RyanKingArt/sounds/746363/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## nature-owl

Distant owl — SyntaxSeed.

Licence: CC0-1.0.

Source: https://freesound.org/people/SyntaxSeed/sounds/871240/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## nature-waves

Waves on the shore — straget.

Licence: CC0-1.0.

Source: https://freesound.org/people/straget/sounds/412308/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## nature-stream

Flowing stream — yurkobb.

Licence: CC0-1.0.

Source: https://freesound.org/people/yurkobb/sounds/393335/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## nature-branch

Snapping branches — KieranKeegan.

Licence: CC0-1.0.

Source: https://freesound.org/people/KieranKeegan/sounds/434555/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## machine-motor

Vending machine motor — Kyodon.

Licence: CC0-1.0.

Source: https://freesound.org/people/Kyodon/sounds/153419/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## machine-metal

Metal impact and rattle — SoundDesignForYou.

Licence: CC0-1.0.

Source: https://freesound.org/people/SoundDesignForYou/sounds/697754/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## transport-bicycle

Bicycle bell — Kinoton.

Licence: CC0-1.0.

Source: https://freesound.org/people/Kinoton/sounds/431320/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## transport-train

Passing train — jakobhandersen.

Licence: CC0-1.0.

Source: https://freesound.org/people/jakobhandersen/sounds/482205/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## transport-bus

Bus idling — Mihacappy.

Licence: CC0-1.0.

Source: https://freesound.org/people/Mihacappy/sounds/803762/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Individual item CC0 dedication allows copying, modification, local redistribution and commercial reuse. Credit retained voluntarily. Public preview endpoint supplied by the source page; no account, API key or download restriction bypass.

## r2-school-locker

School locker handling — loganzsound.

Licence: CC0-1.0.

Source: https://freesound.org/people/loganzsound/sounds/873426/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-pencil-writing

Pencil writing — Vrymaa.

Licence: CC0-1.0.

Source: https://freesound.org/people/Vrymaa/sounds/753216/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-chalk-board

Writing on a chalkboard — Soundscape_Leuphana.

Licence: CC0-1.0.

Source: https://freesound.org/people/Soundscape_Leuphana/sounds/210319/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-stairwell-footsteps

Footsteps in a stairwell — RutgerMuller.

Licence: CC0-1.0.

Source: https://freesound.org/people/RutgerMuller/sounds/365412/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-photocopier

Photocopier switching on — mariiao2.

Licence: CC0-1.0.

Source: https://freesound.org/people/mariiao2/sounds/232813/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-desk-drawer

Desk drawer closing — sechavez3499.

Licence: CC0-1.0.

Source: https://freesound.org/people/sechavez3499/sounds/586511/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-office-ventilation

Office hallway ventilation — kyles.

Licence: CC0-1.0.

Source: https://freesound.org/people/kyles/sounds/637804/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-phone-vibration

Phone vibrating on wood — metaxis.

Licence: CC0-1.0.

Source: https://freesound.org/people/metaxis/sounds/708216/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-stapler

Stapler — giddster.

Licence: CC0-1.0.

Source: https://freesound.org/people/giddster/sounds/360492/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-wood-footsteps

Soft footsteps on wood — SpliceSound.

Licence: CC0-1.0.

Source: https://freesound.org/people/SpliceSound/sounds/148802/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-gravel-footsteps

Gravel footsteps — IENBA.

Licence: CC0-1.0.

Source: https://freesound.org/people/IENBA/sounds/818562/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-running-gravel

Running and stopping on gravel — KikeVilaplana.

Licence: CC0-1.0.

Source: https://freesound.org/people/KikeVilaplana/sounds/436525/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-high-heels

High heels on wood — Vrymaa.

Licence: CC0-1.0.

Source: https://freesound.org/people/Vrymaa/sounds/753292/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: lossy HQ MP3 preview, not the lossless original.

Individual CC0 dedication permits copying, modification, local redistribution and commercial use. Attribution is retained voluntarily.

## r2-car-wet-pass

Car passing on a wet road — TSP-Talk.

Licence: CC0-1.0.

Source: https://freesound.org/people/TSP-Talk/sounds/846301/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-night-city

Distant night traffic — brunoboselli.

Licence: CC0-1.0.

Source: https://freesound.org/people/brunoboselli/sounds/871593/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-bus-departure

Bus driving away — freemaster2.

Licence: CC0-1.0.

Source: https://freesound.org/people/freemaster2/sounds/691635/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-rail-crossing

Rail crossing and train — Zott820.

Licence: CC0-1.0.

Source: https://freesound.org/people/Zott820/sounds/655704/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-light-rain

Light rain drops — rcproductions54.

Licence: CC0-1.0.

Source: https://freesound.org/people/rcproductions54/sounds/265045/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-rain-foliage

Rain on foliage — Cinetony.

Licence: CC0-1.0.

Source: https://freesound.org/people/Cinetony/sounds/672696/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-rolling-thunder

Muffled thunder roll — TRP.

Licence: CC0-1.0.

Source: https://freesound.org/people/TRP/sounds/574391/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-window-wind

Wind and window tapping — jpjurilla.

Licence: CC0-1.0.

Source: https://freesound.org/people/jpjurilla/sounds/562342/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-rattling-fan

Creaking fan — Saltbearer.

Licence: CC0-1.0.

Source: https://freesound.org/people/Saltbearer/sounds/473627/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-industrial-motor

Motor behind a metal door — kyles.

Licence: CC0-1.0.

Source: https://freesound.org/people/kyles/sounds/406310/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-lift-door

Lift doors closing — jchamusantana.

Licence: CC0-1.0.

Source: https://freesound.org/people/jchamusantana/sounds/634353/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-servo-movement

Machine servo movements — pencilina.

Licence: CC0-1.0.

Source: https://freesound.org/people/pencilina/sounds/442244/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.

## r2-electric-drill

Electric drill — innov8_Music.

Licence: CC0-1.0.

Source: https://freesound.org/people/innov8_Music/sounds/871631/.

Licence URL: https://creativecommons.org/publicdomain/zero/1.0/.

Preview-quality source material: public high-quality MP3 preview. Prepared PCM output, where supplied, does not restore original lossless fidelity.

Individual recording CC0 dedication permits copying, modification, local redistribution and commercial reuse. Voluntary creator/source credit retained.