Noise suppression software (NVIDIA Broadcast, RTX Voice, Krisp) is the AI-powered layer that removes background noise from your microphone signal in real time. Mechanical keyboard, fan hum, air conditioner, distant traffic, all stripped from the audio without affecting your voice quality.

NVIDIA Broadcast is the default for streamers on RTX-series NVIDIA GPUs. The software ships free, runs on the GPU's tensor cores, and produces noise suppression quality that beats most paid alternatives. Install once, route the microphone through the Broadcast virtual device, configure OBS to use the Broadcast virtual mic.

RTX Voice is the predecessor to NVIDIA Broadcast and runs on older NVIDIA GPUs that do not support the newer Broadcast app. Same principle. Free download.

Krisp is the cross-platform alternative for streamers without NVIDIA hardware. Free tier with limited daily usage, paid tier for unlimited. The Krisp suppression quality matches the NVIDIA tools closely.

Pick whichever is available on your hardware. The audible improvement is dramatic. Most streamers do not realize how much background noise their bare microphone signal carries until they enable suppression.