Optimizing good noise gate settings in OBS helps streamers remove background hiss, fan noise, and mic rustle without cutting out speech. When thresholds, attack, and hold are tuned precisely, your audio stays clean even when no one is speaking.
This guide walks through practical OBS noise gate configurations, setup steps, and questions streamers commonly ask. The aim is to give you repeatable settings that adapt to different room acoustics and hardware.
| Parameter | Recommended Setting | Purpose | Typical Adjustment Range |
|---|---|---|---|
| Noise Gate Threshold | -30 dB to -40 dB | Level below which the gate starts closing | -60 dB to -20 dB |
| Attack Time | 5 to 30 ms | How quickly the gate reacts to sound above threshold | 0.1 ms to 100 ms |
| Hold Time | 100 to 300 ms | How long the gate stays open after sound drops below threshold | 50 ms to 1000 ms |
| Knee (optional) | Soft knee around -40 dB | Smooth transition near threshold to avoid abrupt cuts | Off, 10–40 dB range |
Key Noise Gate Concepts in OBS
Noise gate settings in OBS rely on filters applied to your audio source. Understanding how threshold, attack, hold, and optional knee work together prevents both constant background noise and awkward cutoff artifacts.
How the Gate Reduces Background Noise
When audio falls below the threshold, the gate gradually reduces gain. Fast attack settings react almost instantly, while slower attack lets percussive elements pass through naturally. A well-chosen hold time keeps the gate open during short pauses in speech.
Setting Up Noise Gate in OBS Studio
Start by adding an Audio Input capture and selecting your microphone device. Then open the Filter section and add a Noise Gate filter, placing it after any Compression or Noise Suppression filters for a clean processing chain.
Use real-time audio monitoring to dial in values. Begin with a conservative threshold, then slowly lower it until room noise triggers the gate. Adjust attack and hold until your voice feels responsive but hiss is minimized.
Advanced Tuning for Different Streaming Scenarios
Dynamic content, louder music intros, or sudden audience reactions can challenge a fixed noise gate profile. Creating multiple scenes or using profiles helps balance clean output with natural vocal delivery.
For quieter recording setups, increase hold and soften the knee to avoid choppy audio. For energetic live streams with frequent pauses, prioritize fast attack and moderate threshold so the gate keeps up with quick volume changes.
Recommended Practices for Reliable Audio
- Set threshold by measuring silence in your room and backing off 6–12 dB.
- Use a short attack time for responsive voice work, slightly slower for music.
- Choose a hold time that covers normal breath gaps but not entire pauses.
- Enable soft knee when you want smoother transitions near the threshold.
- Test the setup with background music and sudden speaking to confirm behavior.
FAQ
Reader questions
Why does my voice cut in and out when noise gate is enabled?
Voice cutting in and out usually means the threshold or hold time is too aggressive. Raise the threshold slightly and increase the hold so brief pauses do not slam the gate shut.
Should I set attack fast or slow for speech in OBS noise gate?
Use a moderately fast attack (5–30 ms) so initial consonants like plosives are not cut, while still responding quickly to room noise between words.
What is a good noise gate threshold for a typical USB microphone?
For many USB microphones, a threshold around -36 dB captures natural voice while ignoring fan hum and keyboard noise. Adjust by monitoring your waveform when the room is quiet.
Is it better to use noise gate before or after noise suppression in OBS?
Place noise suppression before noise gate so residual hiss is reduced first, then let the gate block any remaining low-level noise during pauses.