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Mainly because of noise pollution and unhappy residents.
noise
noise
Sounds like a loose timing chain.
Supposedly the duck noise sounds like quack.
yes
Noise blocking headphones insulate your ear from outside sounds to reduce the amount of outside noise allowing you to better hear and focus on the sounds from the headphones.
Ambiance, or Ambient Sounds White Noise
Its almost sounds like a dolphin noise.
Sounds
noise
Noise