Claim: Acoustic quieting is the means of making machinery quieter by damping vibrations to prevent them from getting to the observer, which is accomplished by absorbing the vibrational energy or minimizing the source of the vibration or by redirecting it away from the observer.
Evidence: Acoustic quieting is the process of making machinery quieter by damping vibrations to prevent them from reaching the observer. Quieting is achieved by absorbing the vibrational energy or minimizing the source of the vibration. It may also be redirected away from the observer.