The best way to reduce noise phone recording picks up is to stop it getting in before you ever touch a noise-reduction tool: control the room, get close to the mic, and set sensible levels. Software cleanup helps, but it can only do so much — prevention is where the real gains are.
Here’s a practical order of attack, from the things that matter most to the finishing touches.
Start with the room, not the app
Most “noise” is actually your environment: traffic, fans, fridges, air conditioning and room reflections. Before recording:
- Turn off anything that hums or whirs — fans, AC, appliances, computers.
- Close windows and doors to block outside sound.
- Record in a soft, small space. Carpet, curtains, a sofa or a clothes-filled wardrobe absorb reflections that otherwise read as a washy, noisy recording.
- Put the phone in airplane mode so calls and notifications can’t ruin a take.
If you record regularly, a little room treatment pays off fast — see our guide to acoustic treatment for home studios.
Get closer to the source
The closer the mic is to what you’re recording, the louder your wanted sound is relative to the background — so you can record at a lower gain and the noise floor drops. For vocals, work a hand’s width from the mic. Distance is the single most effective, free noise-reduction tool you have.
Set your levels properly
Recording too quietly is a hidden cause of noisy results. If your take is too soft, you’ll boost it later and lift the hiss with it. Set your input so the loudest parts peak well below clipping, but still use a healthy chunk of the meter. That keeps the wanted signal comfortably above the noise floor. This is just gain staging on a phone — our explainer on gain staging applies directly.
Use a better mic and shield it
Built-in phone mics are omnidirectional, so they grab sound from everywhere. A directional external mic hears mostly what it’s pointed at and rejects the rest — our walkthrough on how to connect a microphone to your phone covers getting one hooked up. Add a foam or furry windshield to kill wind and breath noise, and angle the mic slightly off-axis from your mouth to avoid plosive pops. For options, see the best microphones for smartphones.
Avoid handling and contact noise
Holding the phone transmits every finger movement into the recording as thumps and rustle. Prop the phone on a stand, a small tripod, or lean it against books. If you must hold it, hold it still and steady. A clip-on lavalier sidesteps handling noise entirely — see the best lavalier mics for phones for picks that clip out of the way.
Understand the kinds of noise you’re fighting
Not all noise is the same, and knowing which type you’ve got tells you which fix to reach for. Broadly, phone recordings suffer from four culprits:
- Broadband hiss: the steady “shhh” that sits across the whole take. It comes from the mic and preamp themselves, and it gets worse the more you turn up the gain. The cure is closer mic placement and a healthier recording level, not more denoising.
- Low-frequency rumble: traffic, footsteps, air conditioning and general building hum. It’s mostly inaudible as pitch but muddies everything. A high-pass filter removes the bulk of it cleanly.
- Tonal hum: a fixed-pitch buzz, often from mains electricity or a nearby charger. Unplug the phone while recording where you can, and keep it away from laptops and power bricks.
- Intermittent noise: a door, a passing car, a creaking chair. Software struggles with these because they’re not constant — the only reliable fix is to stop and re-record the affected line.
Match the tool to the noise and you avoid the classic mistake of hammering a denoiser at a problem it was never going to solve.
Clean up in the app — last, not first
Once you’ve captured the cleanest take you can, your app’s tools tidy the rest:
- Noise gate: mutes the track when you’re not speaking or singing, removing background hiss in the gaps.
- Noise reduction / denoise: learns the steady background tone and subtracts it. Use it gently — too much makes voices sound underwater and metallic.
- High-pass / low-cut EQ: rolls off low rumble from traffic and air handling. A gentle high-pass cleans up most vocal recordings.
- Manual editing: silence and fade the gaps between phrases by hand for the cleanest result.
Order matters here. Start with the high-pass to clear rumble, then capture a “noise print” from a silent second of the take for the denoiser, apply it sparingly, and gate last so it works on the already-cleaned signal. Pushing denoise too hard before anything else is the quickest way to that swirly, robotic artefact.
Apps like GarageBand (iOS), BandLab (iOS and Android) and FL Studio Mobile (iOS and Android) include gates and EQ that handle this well. For where these fit in a full session, see how to record vocals on your phone.
Common mistakes that make phone recordings noisier
A handful of habits quietly sabotage otherwise good takes. Avoid these and you’ll be ahead of most phone recordings:
- Recording too far away “to be safe,” then boosting later. This is the number-one cause of hiss. Get close and record at a sensible level instead.
- Leaning on denoise to rescue a bad room. No plugin fixes a noisy environment as well as turning off the fan and closing the window did for free.
- Ignoring plosives and wind. The “thud” on p and b sounds isn’t really noise, but it reads as it — a cheap pop shield or off-axis angle removes it.
- Compressing first. Compression raises the quiet parts, including the noise floor. Clean and gate before you compress, never after.
A quick checklist to reduce noise phone recording catches
- Silence the room and switch to airplane mode.
- Record in a soft, small space.
- Get close to the mic and use a directional external mic if you have one.
- Set levels so peaks sit just below clipping.
- Mount the phone to avoid handling noise.
- Apply a high-pass, then a gentle gate, then light denoise — in that order.
Once your recording is clean, the next step is balancing it. Our guide to how to mix a song on your phone picks up from there.
Frequently asked questions
Can I remove background noise after recording?
Partly. Noise reduction and gates can lower steady hiss and hum, but they can’t restore detail masked by loud noise, and overusing them makes the recording sound artificial. A clean capture always beats heavy cleanup.
Why does my phone recording have a constant hiss?
That’s usually the noise floor lifted by recording too quietly and then boosting the level. Record closer to the source at a healthier input level, and the hiss largely disappears.
Does airplane mode actually reduce noise?
It doesn’t change the audio itself, but it prevents interruptions and stops some phones from inducing faint interference into the recording. Mainly, it stops a notification or call ruining a good take.
Should I use my phone’s voice memo app or a dedicated recording app?
A dedicated app usually wins, because it lets you set input levels, monitor the meter and add a high-pass or gate. Voice memo apps often apply their own automatic processing that you can’t control, which can pump the noise floor up and down. If you want a clean, predictable recording you can clean up later, choose one of the best apps to record vocals that gives you manual control.
Does a windscreen really make a difference indoors?
Yes, more than people expect. Even indoors, breath and the puff of air from plosive consonants hit the mic as low-frequency bursts. A foam cover or furry windshield softens those, so you spend less time editing out pops afterwards — and it costs very little.
