A noise gate is one of the simplest and most misunderstood tools in mixing. It closes when the signal drops below a level you choose, silencing background noise between notes or hits. This guide explains the controls and gives starting settings, whether you use an Analog Rack style gate or any other.
Plugin details vary, so check the developer's official page for the specific gate you are using.
What a noise gate does
Imagine a door that opens when a sound is loud enough and closes when it is quiet. That is a gate. It is perfect for removing amp hiss between guitar chords, bleed on drum microphones and room noise on recordings. Used badly, it chops the ends of notes and sounds unnatural.
The controls explained
| Control | Job |
|---|---|
| Threshold | Level above which the gate opens |
| Attack | How quickly the gate opens |
| Hold | How long it stays open after the signal drops |
| Release | How quickly it closes |
| Range or reduction | How much quieter the closed signal gets |
| Sidechain filter | Lets the gate listen to a filtered version of the signal |
A range of full silence is aggressive. Try reducing by 10 to 20 dB first; it often sounds more natural and hides the gating action.
Starting points by source
- Snare or tom: fast attack (under 1 ms), hold 30 to 80 ms, release 50 to 150 ms. Use the sidechain filter to focus on the drum and ignore hi-hat bleed.
- Electric guitar: fast attack, medium hold, release long enough to let notes ring naturally.
- Vocals: gentle range reduction, slow release, or use clip gain and manual edits instead.
- Kick: a fast gate can tighten it, but check it does not remove the tail you want.
Step by step
- Play the loudest section and raise the threshold until noise disappears but the wanted sound still passes.
- Lower the threshold slightly so quiet notes are not cut.
- Adjust hold and release until endings sound natural.
- Set the range so the gate is helpful but not obvious.
- Listen in the full mix, not just solo.
Gate before or after compression?
Put the gate first. A compressor raises quiet noise, so gate the noise out before compressing. If you are new to compression, our Fruity Compressor guide covers threshold and release concepts that also apply to gates.
Also keep your recording level sensible from the start, as covered in the gain staging guide. A clean signal needs less gating.
Alternatives to gating
- Manually trim silence between phrases.
- Use clip gain to lower quiet sections.
- Use a spectral noise reduction tool for constant hiss.
- Improve the source: move the mic, fix the ground loop, close the window.
Common gating problems and fixes
| Problem | Fix |
|---|---|
| Notes cut off early | Increase hold and release, lower threshold |
| Gate opens on bleed | Use the sidechain filter or raise threshold |
| Choppy, unnatural sound | Reduce range so the gate only lowers noise a little |
| Clicks when the gate opens | Slow the attack slightly |
If a gate never seems to sound right, the recording itself may be the issue. A gate hides noise but cannot fix a poor take. Try to solve noise at the source with better mic placement, quieter surroundings, or a lower preamp gain.
Creative uses
Gates are not only for cleaning. A gate with a sidechain input can trigger reverb on a snare for a classic gated tail, or chop a pad rhythmically when driven by a drum loop. Experiment: send a kick to the sidechain of a gate on a sustained pad, and the pad will pulse in time with the kick. It is a classic trick that works with any gate offering an external sidechain.
As always, check the specific plugin's features on the developer's official page and confirm current price before you download.
Quick reference table
| Source | Threshold | Hold | Release |
|---|---|---|---|
| Snare | Just above bleed | 40 to 80 ms | 80 to 150 ms |
| Rack tom | Just above bleed | 80 to 120 ms | 150 to 250 ms |
| Guitar amp | Just above hiss | 50 to 100 ms | 150 to 300 ms |
| Room vocal | Just above noise floor | 100 ms plus | 200 ms plus |
These are starting points only. Your source, mic and room decide the final numbers.
Frequently asked questions
Is a noise gate the same as a compressor?
No. A gate reduces signal below a threshold, while a compressor reduces signal above it.
Why does my gate chatter?
The signal is hovering around the threshold. Increase hold, add a little hysteresis if available, or lower the threshold.
Should I gate vocals?
Usually gentle or manual editing sounds better than a hard gate.
Is the Analog Rack gate free?
Check the official page for the current price and details.
Key takeaways
- Set the threshold just above the noise.
- Use hold and release to keep notes natural.
- Reduce by 10 to 20 dB before going to full silence.
- Gate before compression.
