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A comment on Principles of Calm Technology. Parent comment

Re:Principles of Calm Technology by drjasonharrison on Tuesday August 30, 2016 @07:35PM (#12394817)
There are "white noise" back up sounds that are used when the trucks are expected to be used at night.
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Re:Principles of Calm Technology by pimlottc on Wednesday August 31, 2016 @12:39AM (#12396069)
Fascinating, here's a good demo video: https://youtu.be/psWBaxtK19g?t=1m11s
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