How to Remove Background Noise in GarageBand in 2026
GarageBand's Noise Gate silences the gaps but leaves noise under your voice. Set the gate for silences, and clean the noise under the voice with a free 30-second preview.
GarageBand's built-in tool for background noise is the Noise Gate. It silences the track when the sound drops below a threshold, so hiss disappears between words. It doesn't touch noise that plays at the same time as your voice, which is usually the noise listeners notice in a podcast or voiceover.
For noise under the voice, export the track and clean it outside GarageBand. The EraseNoise audio noise remover plays a free 30-second preview, so you can hear whether it helps before you process the whole file.
Key Takeaways
- Select the audio track, open Smart Controls, and tick Noise Gate. Set the threshold just above the hiss.
- A gate cleans the silences only. Noise under your voice stays.
- Export the track, clean it with a noise remover, then bring it back and gate it if needed.
- Amp and distortion effects make background noise louder. Apple recommends the gate for that case.
Quick answer
Hiss only in the pauses: use GarageBand's Noise Gate. Fan, hum, or traffic under the voice: export the track as WAVE or AAC, upload it to EraseNoise, hear 30 seconds free, and bring the cleaned WAV back into GarageBand.
Method 1: The Noise Gate
Apple's GarageBand User Guide says the Noise Gate reduces low-level noise by cutting off the sound when it falls below a certain minimum level, the threshold. It's often used first in a chain of effects, and you load it by selecting the Noise Gate checkbox on an audio track. (Add and edit effect plug-ins in GarageBand on Mac, GarageBand 10.4.14 guide, retrieved 2026-10-21.)
- Select the audio track with the noise.
- Open Smart Controls with the button in the control bar, or from the View menu.
- Select the Noise Gate checkbox.
- Solo the track and play a section with both silence and quiet speech.
- Adjust the threshold until the hiss vanishes in the gaps but your softest words still come through.
If the threshold is too high, first and last syllables get chopped. If the noise is nearly as loud as your voice, there's no clean setting.
Photo: GuitarChalk, CC BY 2.0.
Method 2: Gate before amp effects
Apple's support article explains that distortion, overdrive, and amp simulators amplify the instrument's input, which can boost noises you couldn't hear before. The gate keeps those low-level sounds from entering the effects. (Preventing noise from effects in GarageBand, published March 18, 2025.) Turn the gate on and adjust it until noise disappears from silent passages while the instrument still plays normally.
GarageBand vs EraseNoise
| Job | Better first workflow |
|---|---|
| Hiss between sentences or notes | GarageBand Noise Gate |
| Fan, air conditioning, or traffic under the voice | EraseNoise on the exported track, then gate in GarageBand |
| Electrical hum through the whole take | EraseNoise on the export |
| Guitar amp noise in the pauses | GarageBand Noise Gate, first in the chain |
| Room echo on a vocal | EraseNoise echo removal |
| A dog or a door over a word | Re-record the line. See removing dog barking |
Common mistakes in GarageBand
- Expecting the gate to clean the voice. It opens while you talk, so everything passes, noise included.
- Threshold too high. Quiet words and the ends of sentences get cut off.
- Gate after the amp. Put it first, so the hiss is gone before the amp makes it louder.
- Setting it with the music playing. Solo the track, or you can't hear whether the gaps are clean.
When EraseNoise is faster
EraseNoise handles the part the gate can't: steady noise under the voice. You don't capture a noise profile, and nothing needs installing.
- In GarageBand, choose Share, then Export Song to Disk, and pick WAVE or AAC. Solo the vocal track first if you only want that one.
- Upload the file to the audio noise remover.
- Listen to the free 30-second preview against the original.
- If the voice is cleaner, sign in and process the full file with paid minutes.
- Download the WAV and drag it back into GarageBand. Gate it if the silences still need it.
Frequently asked questions
Does GarageBand have noise reduction?
GarageBand's built-in noise tool is the Noise Gate, which silences the track below a threshold. For noise under your voice, export the track and use a noise remover such as EraseNoise.
Where is the noise gate in GarageBand?
Select the audio track and open Smart Controls from the control bar or the View menu. Select the Noise Gate checkbox, then adjust its threshold.
Why does the noise gate cut off my words?
The threshold is too high. Lower it until the softest syllables come through.
How do I remove background noise from a GarageBand podcast?
Gate the pauses in GarageBand, then export the voice track and clean the noise under it with EraseNoise. Listen to the 30-second preview before you process the full episode.
The practical takeaway
Use the Noise Gate for clean pauses. For the fan, hum, or traffic under your voice, export the track and try the EraseNoise audio noise remover. The free preview tells you whether the full file is worth processing. Next time, record closer to the mic with fans off, so there's less to remove.
For more control on a Mac, see Audacity and iMovie.
