Mixing and Mastering AIHum, hiss and room tone out, detail left alone.
Broadband hiss, air conditioning, computer fans and mains hum all sit underneath a recording and never go away on their own. Turning the track up turns them up too.
This removes the steady background without hollowing out the thing you actually recorded.
Key points
- Removes constant background noise: hiss, room tone, fan and traffic rumble.
- A dedicated option removes mains hum at 50 or 60 Hz and its harmonics.
- Strength is adjustable, because over-reduction sounds worse than the noise.
- 1 token per run.
What it is good for
- Home recordings. Bedroom and untreated-room captures with a constant noise floor.
- Location audio. Interviews and voiceover recorded somewhere with traffic or air conditioning.
- Electrical hum. A ground loop or cheap interface leaving 50 or 60 Hz buzz across the take.
- Archive material. Tape hiss on an older recording you want to reuse.
Why restraint matters
Noise reduction always removes a little of the signal along with the noise. Push it hard and you get the underwater, phasey artefact people call birdies, which is far more distracting than the hiss you started with.
Start low. The goal is to move the noise below the point where you notice it, not to reach absolute silence between phrases.
What it costs
Noise Reducer costs 1 token per run. Tokens work across every tool, so one balance covers everything here. A Studio subscription at $19.99 a month includes a monthly allowance and the full engine alongside it.
Common questions
Will it remove a one-off sound, like a door slam?
No. This targets constant background noise. For a single unwanted event, use Spectral Editing, which can lift one sound out of one moment.
Should I reduce noise before or after other processing?
Before. Compression and limiting raise the noise floor along with everything else, so removing noise first means you are not amplifying it later.
What is the mains hum option for?
Electrical hum sits at exactly 50 Hz or 60 Hz depending on your country, plus harmonics above it. Targeting those specific frequencies removes the buzz far more cleanly than broadband reduction.
Related tools
- Audio Restoration (2 tokens) — Clicks, crackle and damage repaired.
- Spectral Editing (2 tokens) — Lift one sound out of one moment, or clean the whole file up.
- De-esser (1 token) — Take the harshness off sibilance without dulling the vocal.