2026-10-30
How to Reduce Background Noise on Your Mic (and Clean Up What Gets Through)
Practical ways to stop your microphone picking up fans, traffic and room noise: placement, gain, mic type and room fixes, plus how to remove the noise left in a recording afterwards.
Why Your Mic Picks Up So Much Noise
A microphone does not know which sound is your voice. It records everything that reaches it, and it records it in proportion to how loud it is at the mic. Most noise problems come from one of three things:
- the mic is too far from your mouth, so the gain is turned up and the room gets turned up with it
- there is a steady noise source nearby: a computer fan, an air conditioner, a fridge, traffic outside
- the room is hard and bare, so your own voice bounces off the walls and comes back as echo
The good news is that most of this can be fixed before you press record, for free. Whatever is left can be cleaned up afterwards.
Fix It at the Source
1. Get closer to the mic
This is the single most effective change. Halving the distance between your mouth and the mic makes your voice much louder at the mic while the room noise stays the same, so you can turn the gain down and the noise drops with it. For most USB and headset mics, a hand's width (10–15 cm) is a good starting point. Speak slightly across the mic rather than straight into it to avoid pops.
2. Turn the input gain down
If the gain is set high so you can sit back from the mic, every fan and car gets amplified too. Move closer, then lower the gain until your loudest speech peaks well below the top of the meter. On Windows and macOS the input level is in the sound settings; many USB mics also have a gain knob on the body.
3. Point the mic away from the noise
Most podcast and streaming mics are cardioid: they hear best from the front and least from the back. Put the back of the mic toward the computer, the window or the door. A dynamic mic generally picks up less of the room than a condenser mic, which is why many streamers in noisy rooms use one.
4. Switch off what you can
Turn off fans and air conditioning while recording, move the laptop away from the mic, close the window, and put your phone in silent mode. If something cannot be turned off, such as a fridge or a server, record a few seconds of "silence" first so you can hear how much noise is really there.
5. Soften the room
Bare walls, glass and hard floors make a recording sound echoey and distant. Rugs, curtains, a sofa, a bookshelf, or even recording in a room full of clothes all help. You do not need acoustic foam to make a noticeable difference.
6. Use the noise suppression your call app already has
For live calls, the noise reduction should run during the call: Zoom, Teams, Google Meet and Discord all have their own noise suppression setting, and Windows and macOS offer voice processing for supported mics. These work in real time while you talk. AudioClean does not process live calls; it cleans recordings after they are made.
Clean Up the Recording Afterwards
Even with good habits, some noise usually gets through: a hum you stopped noticing, traffic, the hiss of a cheap mic. That is where AI noise removal helps.
- Open the AudioClean noise remover in your browser.
- Drop in your recording. Audio files (MP3, WAV, M4A, FLAC and more) and videos (MP4, MOV and more) both work.
- Choose a level: Light for mild noise, Medium for most recordings, Aggressive for very noisy ones.
- Switch between the original and the cleaned version to compare, then download.
The processing runs on your own device; the file is never uploaded. For specific kinds of noise, these pages go into more detail:
- steady hum from a computer, fan or AC: remove fan noise from a voice recording
- outdoor recordings: remove wind noise
- podcasts: podcast noise reduction
- recorded meetings: meeting audio cleanup
What Noise Removal Cannot Fix
AI noise removal separates voice from noise. It works best on steady sounds (hum, hiss, fans, traffic) and on noise that sits apart from the voice. It is not a fix for everything:
- Echo and reverb from a bare room are part of your voice by the time they reach the mic. Treat the room instead.
- Clipping (a voice recorded so loud that it distorts) cannot be undone. Keep the gain down.
- Other people talking in the background are voices too, so they are hard to remove.
Quick Checklist
| Problem | Fix before recording | Fix afterwards |
|---|---|---|
| Fan, AC or computer hum | Turn it off, point the back of the mic at it | AI noise removal, Medium |
| Traffic or street noise | Close the window, get closer to the mic | AI noise removal, Medium or Aggressive |
| Mic hiss | Get closer, lower the gain | AI noise removal, Light |
| Echoey, distant voice | Get closer, soften the room | Hard to fix afterwards |
| Distortion | Lower the gain | Cannot be fixed |
Common Questions
Why does my mic pick up background noise but not my voice clearly?
Usually the mic is too far away and the gain is too high, so the room is almost as loud as you are. Move closer and turn the gain down.
Can I remove background noise from a recording I already made?
Yes. Upload it to AudioClean and the AI removes the background noise while keeping your voice. The free plan handles files up to 10 minutes.
Does AudioClean work during Zoom or Discord calls?
No. It cleans recorded files. For live calls, turn on the noise suppression in your call app; for the recording of the call, you can use AudioClean afterwards.