A noise suppression filter is included in the Zoom desktop client, which can assist reduce distracting sounds picked up by participants' microphones and enhance audio quality. To improve the meeting experience, background noise such as paper crunching, keyboard tapping, fan noise, dog barking, and other sounds will be filtered away. Zoom mutes background sounds picked up by your microphone by default; but, depending on the situation and use case, the setting can be altered to be more or less aggressive.