Stillmore

Free Audio Loudness Normalizer

Choose a recording to export an MP3 with a loudness target of −16 LUFS.

Files stay in this browser. Choose up to 64 MB per job.

Only edit videos you own or have permission to edit. Stillmore does not offer a YouTube video downloader.

Lift a quiet property-tour introduction

The source level was reduced by 12 dB for this example. Keep your playback volume fixed and compare the guide’s voice with the export targeting −16 LUFS.

The presenter introduces the living space.
Original
Edited output

How to normalize a recording’s loudness

  1. Choose the take

    Select an audio file or a video with a recorded soundtrack.

  2. Run the loudness pass

    Select Normalize loudness. The tool uses a fixed integrated loudness target of −16 LUFS.

  3. Compare at one volume

    Download the MP3 and compare the same spoken line with the original without touching the playback volume.

Make spoken clips easier to review together

A consistent listening level is useful when several recordings will be heard one after the other.

Prepare presenter takes

Normalize separately recorded introductions before comparing which delivery works best.

Review customer interviews

Give a reviewer more even listening levels across voice notes recorded on different days.

Check a storefront voiceover

Bring a quiet narration into a practical listening range before deciding whether it needs another take.

Sequence an audio guide

Process the individual stops on a tour before joining them so differences are easier to hear.

Audio loudness normalizer FAQ

Will normalization make a quiet speaker louder than background music?

It adjusts the combined track. If music masks a voice, rebalance the separate tracks first. Then normalize the mix and listen through its loudest moment.

Can I set my own LUFS target?

The target is fixed at −16 LUFS, with a −1.5 dB true-peak target and an 11 LU loudness-range setting.

Does it remove room noise?

Room noise remains in the recording and may become easier to hear when a quiet take is raised. Listen during gaps in speech.

Does processing one merged file match all its speakers?

The processor treats the selected recording as one programme. Process each take separately when their levels need individual attention.

What file can I send after normalizing a recording?

The tool exports normalized.mp3 at 192 kbps. Download it and listen to the loudest passage before delivery.

Can I normalize the sound from a video?

Yes. Select a video containing an audio track. Download the normalized soundtrack as an MP3 and place it back under the picture in your editor if needed.

Does normalization cut out long pauses?

No. It adjusts loudness across the recording. Trim unwanted opening or closing silence separately.