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Other factors like construction materials, the size and shape of the keycaps, and how heavily you type also contribute to typing noise. Mechanical switches are the loudest by far, with scissor switches and rubber dome switches as quieter alternatives. Most of the noise keyboards make comes from the operation of the switches. Thankfully, innovations have been made to reduce the noise of keyboards, from the development of silent mechanical switches to the addition of sound-dampening foam inside keyboard cases. Ever since the IBM Model M first clicked its way into offices, keyboards have been the main tool for just about anyone seated in front of a computer. If you've ever been to an office or a lecture hall, you know the sound of dozens of people typing on keyboards can be as loud as a herd of buffalo and just as distracting.
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