Is Audacity really completely free?

Completely: open source, no tiers, no meter, no account, no upsell waiting at minute 61.

Why doesn't everyone just use Audacity then?

Because it charges patience instead of money: it's a manual editor with a learning curve, its noise reduction needs a noise-only sample to work from, and aggressive settings leave watery artifacts on voices. The AI uploaders are one-click; this is ten.

Can Audacity remove noise from a live call?

No — it edits recordings. For live calls, see the free suppression tools; for one-click file cleanup, Adobe Enhance's free hour.

Audacity noise reduction: the forever-free fixer, walkthrough included

The only tool on this site with no receipt to audit: no cap, no account, no trial, no upsell. Audacity charges you ten minutes of learning once, then removes noise free for the rest of your life.

Open source

$0.00

caps: none
uploads: none — offline
cost: your patience

The only full ring on this site: no cap, no meter, no account. $0.00, no asterisk.

by the ZeroHum audit deskpublished July 31, 2026offline, unlimited lane

Forever-free: YES — open source, meterless

AUDACITY * OPEN SOURCE

YOU PAY$0.00

YOU GIVE

email/loginnone

capsnone

uploadsnone — offline

costyour patience

HONESTY TOTAL$0.00, no asterisk

REAUDITED ON CHANGE

The routine: teach it the noise, then subtract it

Audacity's Noise Reduction works from a sample — it learns what your specific hum sounds like, then subtracts that fingerprint from the whole recording. The steps:

Find 2–5 seconds of noise alone — the pause before you started talking. Select just that.
Open Effect → Noise Removal and Repair → Noise Reduction and click Get Noise Profile. The window closes; Audacity has memorized your room.
Select the whole recording (Ctrl/Cmd-A), reopen the same effect, and apply.
Start gentle: reduction around 10–12 dB, sensitivity 6, frequency smoothing 3 — then preview. Push the dB up only if noise still shows through.

How hard to push the slider

Decibels of noise reduction, 0 to 20 — the settings named in the walkthrough above.

Start gentle

10–12 dB

Where voices go watery

~15 dB

The hatched bar is the ceiling, not a target: past about 15 dB the artifacts cost more than the noise did. Two light passes beat one brutal one.

The honest limits

It needs consistency. The profile method shines on steady noise — fans, hiss, hum — and struggles with unpredictable sound: traffic, voices, a café. For those, the AI rebuilders win; see the online free options.
Aggression has a sound. Past ~15 dB of reduction, voices go watery and metallic. If you're tempted to push harder, the recording probably wants the Enhance free hour instead.
It's destructive editing — work on a copy of the file, always.
Nothing live. It cannot help a call in progress — that's the free calls shelf.

Cap hit? Swap trickWeird artifacts after a heavy pass? Undo, halve the dB, and run the effect twice gently instead — two light passes beat one brutal one.

Download only from audacityteam.org — mirrors love to bundle extras.

Fair questions

Is Audacity really completely free?: Completely: open source, no tiers, no meter, no account, no upsell waiting at minute 61.
Why doesn't everyone just use Audacity then?: Because it charges patience instead of money: it's a manual editor with a learning curve, its noise reduction needs a noise-only sample to work from, and aggressive settings leave watery artifacts on voices. The AI uploaders are one-click; this is ten.
Can Audacity remove noise from a live call?: No — it edits recordings. For live calls, see the free suppression tools; for one-click file cleanup, Adobe Enhance's free hour.