Remove Background Noise in FL Studio with Edison

The hiss is barely there until the singer stops. Then it fills every gap, and a hard noise gate can chop off the ends of words. To remove steady background noise in FL Studio, capture a representative noise profile in Edison, select the audio you want to clean and preview a conservative reduction. Listen with Output noise only to hear what you are losing, then turn it off before clicking Accept so you keep the processed recording rather than the noise you took out.

This workflow cleans recorded audio; it will not work as a live microphone noise-cancellation switch. Keep an untouched recording. The goal is a less distracting background with the performance still sounding open and natural, never dull or watery.

Which background noise can Edison reduce?

Edison’s profile-based Denoiser suits hiss, hum, mains buzz and fan or air-conditioning noise that stays reasonably steady in level and frequency. The current Noise Removal Tool manual separates that from changing events such as a door slam or bird song. One noise profile will not remove every unwanted sound.

Listen during a pause and then under a phrase. Is the same background still there, or are you hearing a short click, room echo, distortion or a playback glitch? Choose the tool by the problem you hear. The word “noise” on a button is a poor guide.

Check the source before repairing a recording

If you can record again, make a short comparison take after dealing with an obvious room noise or moving the microphone. Change one thing at a time and listen; a quieter-looking waveform does not prove a cleaner recording. The audio-recording workflow covers capture and level checks, and the microphone input checklist helps when the input is missing or wrong.

If glitches appear only while a busy project plays, work through the crackling-audio diagnosis and audio settings before you touch a good source file. Image-Line’s Audio Settings documentation describes buffer and driver behavior. Noise that is already baked into a file and a playback underrun are different problems, even though both sound unpleasant.

Open Edison and protect the raw audio

The current edition comparison includes Edison and denoising in Producer Edition and above. You can try the right edition in the standard time-unlimited Trial, but saved projects cannot be reopened until purchase and unlock. Save your project for later and export the audio you need before closing; in the Trial, reopening the project cannot be your only recovery plan.

Load Edison into a Mixer effect slot, then use its File > Load sample command to open the recording. Work from the raw take whenever you have it, rather than from a mix with added reverb and unrelated instruments. That is a sensible place to start, though denoising does not have to come before every other process. The Edison recording and editing guide explains the broader editor workflow.

Keep the original file under its current name and save the result under a new one, such as lead-vocal-take-02-denoise.wav. Accept replaces the selected audio in Edison and creates no separate backup. Saving over the source file later is a separate action, and one to avoid while other clips or projects still need that file.

For an Audio Clip already in the Playlist, Clip menu > Make unique as sample duplicates both the clip and its disk file, while ordinary Make unique reuses the same audio file. That Playlist’s sample-copy distinction matters here, because a renamed clip is not necessarily a second recording. Edit sample opens Edison or whatever external wave editor you configured, so check which editor actually appears.

Remove background noise in eight steps

1. Preserve and load the raw recording. Keep an untouched file, open a working copy in Edison and confirm you hear the intended audio.
2. Select representative noise. Find the longest useful section of the same stable background, preferably without wanted voice, notes or decays.
3. Acquire the noise profile. Right-click Clean up (denoise), or open the Noise Removal Tool and choose Acquire noise profile.
4. Select the audio to process. Close the dialog if necessary, select the intended recording or coherent region, then reopen Clean up (denoise). The profile is retained.
5. Preview with Denoiser active. Activate the Denoiser section, leave unrelated repair modules off and begin with the default settings.
6. Listen to the removed audio. Turn on Output noise only during Preview. Adjust Windows Threshold and Amount, or macOS Amount, while checking for wanted detail.
7. Switch back to the processed recording. Turn Output noise only off and preview again. On macOS, adjust Smoothing here to assess artifacts. Check quiet passages, phrases and their boundaries.
8. Accept, save separately and compare. With Output noise only still off, click Accept. Save a separate edited file and compare it with the original solo and in the mix.

How do you choose a noise profile?

Look before the performance starts, after it ends and between phrases. A useful selection contains the same background as the section you want to clean. Quiet does not always mean unwanted: an inhale, a guitar decay or a reverb tail can be part of the performance.

Choose the longest representative noise-only stretch you can find instead of forcing a fixed one-second selection. If the recording changes halfway through (say, a fan switches speed), listen to each section on its own before applying one profile across everything.

What if there is no noise-only section?

When no isolated noise is available, the manual allows a quiet section where the noise is most exposed. That works as a compromise, but it will never be as clean a reference. Preview cautiously and stop as soon as the wanted sound starts to disappear. A cropped sample with no isolated noise is exactly the problem raised in this Edison user discussion, so check the untrimmed original before inventing a noise reference.

For voice mixed with other sound, the separate Vocal Denoiser described below may be worth a listen. For an instrument with no usable reference, living with some noise or finding a better source is often kinder than damaging the note.

Capture the profile, then select the target

Right-click Clean up (denoise) while the noise region is selected, or open Tools > Spectral > Clean up (denoise) and use Acquire noise profile. The tool keeps that profile when you close it to change the selected region. A green frequency curve confirms a profile is loaded, but it cannot tell you whether the selection contained a breath.

Don’t mix this up with Tools > Noise > Acquire noise threshold. The Edison menu reference lists that as a level threshold for noise-gating functions, which is a different thing from a spectral noise profile.

No selection means the whole sample

In this Denoiser, no selection means the whole sample gets processed. For a partial cleanup, select the coherent section you want before reopening the tool. If you treat small islands differently, listen across their edges for a sudden change in background or tone.

Before you hit Preview, check that Denoiser is active. Declipper and Declicker are separate repair modules; they do not add strength to the denoising. The current Declicker is Windows-only. The sample-editing and cleanup guide covers cuts, fades and repair choices beyond steady background noise.

What does Output noise only do?

With Output noise only on, Preview plays the material being removed. Listen for recognizable words, cymbal attacks or a decay you meant to keep. If they show up there, revisit the profile or ease off the processing. Pushing Amount higher just because the quiet gap sounds cleaner is how vocals get ruined.

Turn Output noise only off before Accept. In that state, Preview and Accept give you the processed audio left after removal, as Image-Line’s removed-versus-residual explanation describes. The noise-only audition is a useful check, but it is the wrong thing to send to the Playlist as your vocal.

Which denoise settings work on Windows and macOS?

The current manual shows Threshold on Windows and Smoothing on macOS, and Amount sets noise suppression in decibels. A percentage from a different denoiser or an old tutorial will not carry over as a setting.

Windows: Threshold first, then Amount

Image-Line suggests 0 dB as a starting point for Threshold. Raising Threshold classifies more material as noise, including low-level detail you may want. With Output noise only enabled, adjust until wanted sound starts to appear, then back off. A lower Threshold can keep detail but may leave noise audibly following the performance.

Next, use Amount to decide how much of that noise to suppress. Raise it only until the remainder stops bothering you in context. If the result sounds underwater, revisit Threshold and then Amount; accepting the edit and trying to hide the damage with EQ rarely works.

macOS: Amount, then Smoothing

Listen to the removed signal while you adjust Amount, and back off once wanted sound starts to appear. Then turn Output noise only off and adjust Smoothing while listening for processing artifacts. Smoothing is its own control, not a Mac name for the Windows Threshold, and it cannot make unlimited suppression transparent.

Compare the edit before keeping it

After a conservative Preview, accept the working copy and save it separately. Match the perceived loudness of the original and processed versions closely enough for a fair comparison, and play only one at a time. You are judging articulation and background, so the louder version should not win by default.

1. Compare the same phrase in the original and processed versions. Does the voice or instrument still have its intended texture?
2. Solo the edit and check soft consonants, attacks, breaths, sustained notes and tails. Listen across any processed-region boundaries.
3. Hear the edit in the actual mix or final listening context. Less suppression can be enough once other audio masks the remaining noise.

If a version fails, go back to the raw source for another attempt instead of stacking stronger reduction on an edit that is already damaged. Once the recording is usable, move on to vocal EQ, dynamics and effects as needed. Check the noise again whenever you make a quiet phrase louder.

When should you use Vocal Denoiser, a gate or EQ?

Vocal Denoiser separates detected voice from other sound

Open Tools > Spectral > Vocal denoiser/isolator in Edison. Unlike the profile-based Denoiser, the Vocal Denoiser Tool analyzes the sample with an AI model and lets you balance detected vocal against non-vocal material. Its Mix range runs from -100% for non-vocal audio to +100% for detected vocal, with 0% representing the original.

Use Preview and judge the actual words and tone. A partial blend can keep useful ambience, and the maximum vocal setting is not automatically the best result. Nor can this tool rescue every buried voice. To split a whole song into instrument parts, use the stem-separation workflow instead. Room reverb has its own Tools > Spectral > Deverb process, which works differently from a stable hiss profile.

A gate quiets gaps but does not separate overlapping sounds

The Fruity Limiter gate controls set its threshold, closed-state gain and release. When a voice opens the gate, the noise traveling with that voice passes through too. A high threshold or an abrupt release can cut off the words and tails you wanted to keep.

In Fruity Limiter, the gate’s default GAIN is 100%, which means no attenuation while the gate is closed; turning it left strengthens the gating effect. This is a different GAIN from the plugin’s main loudness control. Learn what those controls do before copying a threshold from someone else’s recording.

EQ changes frequencies, including wanted sound at those frequencies

A notch can help with a narrow unwanted tone, and a high-pass filter can reduce rumble below the useful range of the recording. Parametric EQ 2’s filters work on frequency bands and have no idea what is noise. If hiss overlaps the brightness of a voice, a broad high-frequency cut removes both. Check the Mixer route when comparing live EQ with an accepted Edison edit, so you know which processing you are actually hearing.

Fix the result when something sounds wrong

Only noise remains after processing

Check whether Output noise only was left on. Use Edison’s Undo if available or reload the preserved raw file, repeat the preview with that option off and only then Accept. Do not overwrite the raw recording with a noise-only output.

The profile is missing or the wrong section was processed

Acquire a profile from the selected noise region; a gate threshold will not do. Then go back to Edison and select the target separately. With nothing selected, the whole sample is processed. With only the small noise patch selected, you have not selected the performance you meant to clean.

The voice becomes dull, lispy or watery

Check for wanted audio in the profile and in Output noise only. On Windows, revisit Threshold and Amount; on macOS, revisit Amount and then Smoothing with the processed output selected. If backing off leaves too much noise, look for a different source or repair method instead of running stronger passes. The vocal-recording guide helps you avoid that compromise next time.

Background texture changes at an edit boundary

Go back to the original and rethink the target region. One steady noise floor usually suits a single treatment of the whole recording, while sections that really differ may need separate decisions. Preview across each join as well as the middle of the repaired phrase.

Save a separate file and return it to the Playlist

Use File > Save sample as for the named edited file. For an uncompressed WAV, pick Microsoft wave file and avoid Microsoft compressed wave file; both can carry a .wav extension, but the encoding differs. The raw source stays your fallback.

To add the result to the Playlist, select that region (or leave nothing selected for the whole sample) and left-click Send sample to Playlist. The Edison send-button reference explains the difference between left-click and right-click, which replaces the currently selected Audio Clip or Sampler Channel. Check placement and routing, and mute the old version so you do not play both by accident.

Save the project too. In the standard Trial, export the audio you need before closing, because reopening saved projects requires purchase and unlock. Keep the raw file until the edit works in context. For the next editing step, use the Samples & Audio Editing guides; if the background starts at capture, revisit the Recording guides.

Frequently asked questions

Can Edison remove hiss and hum from vocals?

Its profile-based Denoiser can reduce reasonably stable hiss or hum, including underneath a vocal. Capture a representative profile and preview carefully: stronger removal can damage wanted detail, so total silence is rarely a useful goal.

How do I capture a noise profile in Edison?

Select a representative noise-only region if possible, then right-click Clean up (denoise). Alternatively, open Tools > Spectral > Clean up (denoise) and choose Acquire noise profile. After capture, select the audio to process separately.

Should Output noise only be on when I click Accept?

No, not when you want the cleaned recording. Turn it on to audition the removed material, then turn it off, preview the processed audio and leave it off before Accept.

Why does Edison noise removal sound underwater?

The profile may contain wanted sound or the reduction may be too aggressive. On Windows, revisit Threshold and Amount. On macOS, adjust Amount, then listen to the processed result while adjusting Smoothing. Return to the raw recording if an accepted edit is already damaged.

Can I denoise without an isolated noise-only section?

The manual allows a quiet section where the noise is most audible, but that reference may contain wanted audio, so treat it with care. For voice mixed with other sounds, try the separate Vocal Denoiser. Neither route guarantees a clean result.

Is Fruity Limiter a replacement for Edison denoise?

Its gate reduces audio when the level falls below a threshold. It can quiet gaps, but noise still passes when the voice opens the gate. Edison’s profile-based Denoiser targets stable background within recorded audio instead.

Is denoising included in FL Studio Fruity Edition?

The current edition comparison lists Edison and denoising in Producer Edition and above, not Fruity. The standard time-unlimited Trial lets you evaluate editions and export audio, but saved projects cannot be reopened until purchase and unlock.

Eric Norris Nashville-based FL Studio producer and editor focused on practical workflow, mixer routing, troubleshooting, sampling and native Image-Line tools.