Bring your best Spotify playlist, and jump on a plane for the Netherlands - where the European Space Agency has its Large European Acoustic Facility, or LEAF, which has quite the sound system installation.
LEAF is a collection of spaceflight simulation facilities, all under a single roof. The main test chamber features two massive horns, as you can see pictured above. Nitrogen is shot through them which produces a range of sounds, up to and exceeding 154 decibels. The ESA describes this to standing as close as you humanly could to a passenger jet, as it's taking off.
If you were to stand next to the LEAF system, your body simply couldn't handle it. So the ESA has installed multiple safety features, where the system will not work if the doors are not closed. The walls are also coated with epoxy resin to absorb sound waves. Steel-reinforced concrete walls encapsulate the test chamber which blocks more of the sound, and the entire room itself is supported by rubber pads which stop the vibration from being transferred throughout the entire building.
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