Everyone notices bad audio and nobody notices good audio, which is why a great shot with a hiss under it still reads cheap. Sooner or later you’ll open a clip that sounds wrong. A fan droning behind an interview. A voice swimming in room echo. A level that clipped when somebody laughed. Then comes the real question: what can you fix? This guide is that decision.
Most articles on this topic are really ads for one tool. The truth is less exciting and more useful: your editor already fixes a lot of this for free, a cheap dedicated plugin handles the next tier, and only the hardest cases need a repair lab like iZotope RX. And some audio is simply gone, at which point the right move is to re-record instead of spending an afternoon making bad sound slightly less bad. Knowing which bucket you’re in is the whole game.
Last updated: July 2026. Some links below are affiliate links. Buy through them and it helps keep the site running, at no extra cost to you. Most of the tools in this guide are free, and I’ve linked none of those, because the point here is to fix your audio for as little as possible, not to sell you software. This is also my day job, so the workflow is the one I use. Software versions and prices move fast in this category, so treat specifics as a mid-2026 snapshot.
First question: is it even fixable?
Before you download anything, sort the problem into one of three buckets. This is the step that saves the most time and money, because it tells you whether you need a free tool, a paid one, or the phone to schedule a re-record.
| Very fixable | Fixable with effort or paid tools | Usually not worth chasing |
|---|---|---|
| Steady background noise (hiss, hum, AC, fan) | Moderate room echo/reverb | Heavy reverb (bathroom, gym, empty hall) |
| Sibilance and harsh “S” sounds | Dialogue buried under noise | Severe clipping baked in at capture |
| Plosive “p” and “b” pops | Thin or distant mic, phone/Zoom audio | Wind roar across the whole take |
| Inconsistent levels | Mild clipping | Two people talking over each other |
| Occasional mouth clicks | Codec-crushed or bandwidth-limited audio | Dialogue drowned by loud music on set |
The left column is a quick fix with tools you already own. The middle column is where a dedicated plugin starts earning its price. The right column is where you stop. Past a certain point the fix costs more time than a re-record and still sounds worse; if that’s your column, skip to the last section before you burn an afternoon.
Rung one: capture better next time
Cold comfort mid-edit, I know, but nothing in post beats a clean source, and the biggest upgrade to your audio is almost never a plugin. Get the mic close, kill the noisy room, and monitor on headphones so you catch problems while you can still fix them; our budget headphone guide covers that end. The right mic for the job helps too: a dynamic in an untreated room, a shotgun at the right distance, a lav on a moving subject. Our guides to voiceover mics and on-camera mics are the upstream fix for most of what this article treats downstream.
Rung two: the free tools you already have
Most creator audio problems die right here, at no cost, so start on this rung before you spend a dollar. The AI dialogue cleanup built into modern editors has gotten good, and it’s always the first thing to try.
Premiere’s Enhance Speech (included with any Creative Cloud plan) is a one-slider fix for background noise and light reverb on a voice, and it’s impressive. One limitation to know: it’s built for voice-only clips, and it will fight or mangle any music sitting under the dialogue. Run it before you add a bed, not after. DaVinci Resolve’s Fairlight page gives you EQ, a de-esser, de-hum, and noise reduction in the free version, which covers the entire left column above. And here’s the caveat that trips people up: Resolve’s one-click Voice Isolation is a Studio feature, part of the paid $295 one-time license, not the free build. Don’t promise yourself that button until you’ve paid for it.
Adobe Podcast’s Enhance Speech is a free web tool that cleans voice recordings in the browser, no install at all, which makes it handy for a fast podcast or voiceover salvage. Its current version leans aggressive, though, and can leave a voice sounding robotic or hollow on quiet passages. Trust your ears and go easy. And Audacity, free and open-source, still does classic noise-profile reduction well on steady hiss and hum, as long as you’re gentle; push it too hard and you get that underwater, warbly artifact. Between these four, a beginner can fix the majority of everyday problems without opening a wallet.
Rung three: one affordable dedicated tool
If a specific problem keeps beating the free tools, buy one focused plugin, not a suite. Supertone Clear is a three-dial AI separator (voice, ambience, reverb) that punches way above its roughly $70 price, especially on reverb and noise together. Waves Clarity Vx is a strong, low-latency dialogue denoiser that’s often on sale for cheap. Accentize dxRevive does something the others don’t: it rebuilds missing high frequencies, so thin, distant, or codec-crushed audio, think Zoom-call source, can come out sounding close to studio-recorded. And CrumplePop’s single-purpose plugins (lav rustle, plosives, and the like) are one-problem fixes that live right in your editor, with a free tier to try. Buy one of these when you keep hitting the same wall. Not as a starter kit.
Rung four: the repair lab (iZotope RX)
iZotope RX, currently at version 12, is the industry-standard repair suite, and it handles the cases everything above can’t. Its superpower is spectral editing: your audio becomes a picture, and you paint out a single cough, a phone ring, or a door slam by hand, leaving the dialogue around it untouched. Its neural-net Dialogue Isolate pulls a voice out from under heavy noise and reverb better than anything else I’ve used. When the middle column of that first table really matters, this is what fixes it.
The part that matters is who should buy it, and at which tier. RX comes as Elements ($99), Standard ($399), and Advanced ($1,399), and it goes on sale so often that paying sticker is a mistake; wait for one. For most solo creators it’s overkill: steady hiss on a voiceover is a problem Premiere or Resolve solves for free. RX pays off when repair is recurring and billable, meaning you clean client location dialogue, or you keep hitting problems the one-click tools mangle. Elements is the sane creator entry point, Standard is the working-editor pick, Advanced is for forensic pro-post work. One note for the record: RX’s development has visibly slowed over the past year. Still the standard, but worth knowing before you spend.
A quick sibling worth naming: if the shoot went wrong on the picture side too, high-ISO grain and video noise, that’s a job for Neat Video, not any audio tool. Different problem, different plugin. Mentioned so you know where the line is.
Rung five: when to stop and re-record
The most professional decision in audio repair is knowing when to quit. If your take lives in the right column, heavy reverb baked in, distortion that clipped at the source, wind over everything, the fix will cost more than a re-record and still sound compromised. Re-recording a voiceover takes ten minutes. Looping a line of dialogue in a quiet room and syncing it to picture (ADR) takes an hour, and it beats a full day of spectral surgery on audio that was never coming back. The articles that outrank this one skip this part, because you can’t sell a plugin with it. It’s still the right answer more often than people want to hear.
Which tool for which problem
| Problem | Start here (free) | Step up to (paid) |
|---|---|---|
| Steady hiss / hum / AC | Resolve Fairlight, Audacity, Premiere Enhance Speech | Waves Clarity Vx |
| Background noise under a voice | Premiere Enhance Speech, Adobe Podcast | Supertone Clear, iZotope RX |
| Room echo / reverb | Premiere Enhance Speech (mild) | Supertone Clear, iZotope RX |
| Thin / distant / phone audio | no free fix | Accentize dxRevive |
| A single cough, ring, or thud | no free fix | iZotope RX (spectral repair) |
| Lav rustle / plosives | Editor de-ess / manual | CrumplePop |
| Heavy reverb / bad clipping | Re-record or ADR | Re-record or ADR |
FAQ
Can I really remove background noise for free?
For most everyday noise, yes. Premiere’s Enhance Speech, DaVinci Resolve’s Fairlight tools, and Adobe’s free Podcast web tool all handle steady hiss, hum, and light background noise on a voice for exactly zero dollars. Paid tools pull ahead on the hard cases, noise woven in with the dialogue, heavy reverb, but always try the free rung first. Most people never need to leave it.
Is iZotope RX worth it for a solo creator?
Usually not. If your problems are the everyday kind, your editor’s free tools cover them. RX is worth it when audio repair turns recurring or billable: you clean other people’s location sound, or you routinely hit problems the one-click tools ruin. If that’s you, start with Elements at $99 rather than jumping to Advanced, and wait for one of the frequent sales. The tier ladder will still be there when you outgrow the bottom rung.
How do I fix echo or reverb in a recording?
Mild room reflection responds to Premiere’s Enhance Speech or a dedicated tool like Supertone Clear or iZotope RX’s de-reverb. Heavy reverb, the sound of a hard-walled empty room, mostly doesn’t come back. No tool un-bounces sound that’s already smeared across the recording. If the reverb is severe, treat it as a re-record situation. The real fix for echo is upstream anyway: get the mic closer and deaden the room before you ever hit record.
Will AI tools just fix everything now?
They’ve gotten remarkably good, and they fix more than they did a year ago. But no. AI cleanup still trades away some of the real voice when it removes the noise, and pushed hard it leaves that robotic, processed sound. It’s a genuine help on the fixable problems and a disappointment on the unfixable ones. The buckets in the first table still hold; AI just moved a few items one column to the left.
Fix what’s fixable, re-record the rest
And that’s the whole system. Sort the problem first, work up from the free tools, and buy a paid one only when a specific problem keeps beating them. Reach for iZotope RX when the hard cases turn recurring, and be willing to re-record when the audio is gone. That willingness to stop is the difference between a clean-sounding channel and an afternoon spent polishing a take that was never coming back.
The upstream guides are the real long-term fix: voiceover mics, on-camera and shotgun mics, and recorders and interfaces for capturing sound that needs no rescue. As always, this is the workflow I use; your project and your budget get the final vote. The rest of our buyer’s guides live on the Gear Guides page.
