![]() ![]() The mechanical system vibrates at one or more of its natural frequencies and damps down to motionlessness. Hence, attempts to reduce noise are often related to issues of vibration.Įxamples of this type of vibration are pulling a child back on a swing and letting it go, or hitting a tuning fork and letting it ring. Sound, or pressure waves, are generated by vibrating structures (e.g. Such vibrations could be caused by imbalances in the rotating parts, uneven friction, or the meshing of gear teeth. ![]()
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