What's the difference between Voice Isolation and Noise Removal in Final Cut Pro?

Noise Removal is a traditional noise reducer: it works best on steady sounds like hiss, fans and air conditioning. Voice Isolation is a machine-learning feature that keeps speech and suppresses everything else, so it also handles changing noise like traffic, chatter or music, but it only makes sense on clips where you want the voice alone.

Why don't I see Voice Isolation in Final Cut Pro?

Voice Isolation arrived in Final Cut Pro 10.6.2 and needs macOS Monterey 12.3 or later, so update both if it's missing. Older versions still have Noise Removal and Hum Removal in the same Audio Enhancements section. Also check that the clip is selected and that you are looking at its Audio inspector.

Can I apply noise removal to many clips at once?

Apple's guide describes enhancing one clip at a time, and Final Cut treats audio enhancements separately from effects, so Paste Attributes (Shift-Command-V) may not carry them over. Test it on one clip before relying on it. Otherwise select each clip, choose Modify > Enhance Audio (Option-Command-A) and set the Noise Removal or Voice Isolation amount in its Audio inspector.

What if Final Cut's tools leave the voice sounding thin?

Lower the amount first; that's almost always the cause. If you can't get it clean without damaging the voice, try CleanNoise: you hear a free 30-second preview of the cleaned audio before paying $0.99 for the full file.

How to remove background noise in Final Cut Pro

October 4, 20266 min read

Final Cut Pro keeps its noise tools in one place: the Audio Enhancements section of the Audio inspector. There are three controls that matter, Voice Isolation, Noise Removal and Hum Removal, and between them they fix most dialogue. Here's how to use each one and when to reach for something stronger.

Open the Audio inspector

Select the noisy clip in the timeline.
Press Command-4 (or click the Inspector button in the toolbar) and choose the Audio tab, the speaker icon.
Scroll to Audio Enhancements. If the controls aren't shown, hover over the right side of the Audio Analysis bar and click Show.

If the clip is a video with attached audio, these settings apply to its audio. Enhancements work on one audio component at a time, so if a clip has more than one (a dual-mono recording, for example), select the individual component first.

Voice Isolation: the strongest option

Voice Isolation uses machine learning to keep speech and push down everything else. It works on noise that changes over time, like traffic, people talking nearby, wind or music, which Noise Removal handles poorly.

Tick Voice Isolation in Audio Enhancements.
Set the amount. Start around 50% and increase it only while the noise is still distracting. Near 100% voices can sound thin and close-miked.

Because it removes everything that isn't speech, don't use it on clips where you want to keep ambience or music.

Noise Removal: for steady background noise

Tick Noise Removal in Audio Enhancements.
Drag the Amount slider up while the clip plays. Stop as soon as the hiss or fan noise is gone; going further makes the voice watery.

Noise Removal is the right choice for air conditioning, computer fans, mic hiss and other constant sounds, especially when you want to keep some natural room tone.

Hum Removal: for electrical buzz

A low buzz from lights, cables or a ground loop is usually at the mains frequency. Tick Hum Removal and choose 60 Hz (North America, parts of Asia) or 50 Hz (Europe, most of the rest of the world). If you're not sure, try both and keep the one that removes the buzz.

Let Final Cut find the problem for you

Final Cut can analyse audio and switch on the fixes it thinks you need. Select the clip and choose Modify > Enhance Audio (Option-Command-A). It checks Loudness, Noise Removal and Hum Removal for you (Voice Isolation and Equalization stay manual); check the result in the Audio inspector and adjust the amounts, since the automatic settings can be heavy-handed.

Noise still there? Clean it outside Final Cut

Built-in tools struggle with noise that's as loud as the voice, like a busy street or a noisy café. If you've tried the controls above and the dialogue still isn't usable:

Export the clip with File > Share > Export File, or use the original camera file.
Drop it into CleanNoise's video noise remover and hear a free 30-second preview of the cleaned audio. Turn on the echo option too if the room was reverberant.
Download the full file for $0.99 (up to 30 minutes), import it, and replace the original clip's audio.

Tips for cleaner audio in Final Cut Pro

Don't stack everything. Voice Isolation and Noise Removal together often over-process. Try one, then add the other at a low amount only if needed.
Keep clips consistent. Use similar Noise Removal and Voice Isolation amounts on every clip from the same mic so they sound the same.
Use roles to check dialogue alone. Solo the Dialogue role in the timeline index to hear the voice without music covering up artefacts.
Record room tone. A few seconds of silence on set makes it easy to hear exactly what you're removing.

Which method should you use?

For most clips, Voice Isolation at a moderate amount is the quickest fix, and Noise Removal is better when you want to keep natural ambience. Hum Removal is the only tool you need for electrical buzz. When the noise is too loud for these to handle cleanly, CleanNoise lets you hear the cleaned result for free before you pay.