How to fix microphone static, hissing, and background noise

Wiggle the cable near the connector while monitoring the input. If the static changes as you move it, you have a loose or damaged connection — the fix is a new cable, not a software setting.

A very common cause of hiss is input gain set too high, amplifying the microphone's own noise floor along with your voice. Lower it in your OS sound settings until the idle noise floor drops, then speak normally and adjust up only as needed.

If the noise is a low, constant hum rather than hiss, and it changes when you touch the mic's metal housing, you likely have a ground loop — usually from mixing USB power and a separate audio interface plugged into a different outlet. A cheap USB isolator or moving both devices to the same power strip usually fixes it.