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Audio Loudness Booster

Recorded too far from the mic? Raise the level without distortion, or normalise to the loudness streaming apps expect. Videos keep their picture; only the sound changes.

Using the Audio Loudness Booster

1

Open the recording

Choose an audio file or a video whose sound is too quiet or too loud.

2

Pick a mode

Normalise to a LUFS target, add a fixed boost in decibels, or turn the volume down.

3

Check and save

Compare before and after, then save as MP3, or as MP4 when you started with a video.

Loudness targets in plain words

LUFS measures how loud something feels over time, not just its peaks.

TargetFeels likeUse it for
-16 LUFSComfortable speechPodcasts, audiobooks
-14 LUFSTypical streaming levelMusic, YouTube
-11 LUFSLoud and punchyShort social clips
+3 to +20 dBA simple boostVery quiet recordings

Audio Loudness Booster Questions & Answers

Will boosting cause crackling?
A limiter catches the loudest peaks so they do not clip. Very large boosts can still make background noise more obvious.
What does normalising do?
It measures the average loudness and raises or lowers the whole file to the target, so different files sound equally loud.
Does the video quality change?
The picture is copied as it is. Only the audio track is processed and replaced.
Can I make audio quieter?
Yes. Choose a negative change to turn a file down.

Why Some Recordings Sound Too Quiet and How to Fix Them

Phone microphones, video calls and screen recordings often produce sound that is far quieter than music or TV. Simply turning up the player is not enough, because other files then become too loud. The fix is to change the file itself.

Boost or normalise?

A boost adds the same number of decibels to everything. It is quick and predictable. Normalising looks at the whole file and sets it to a target loudness, which is better when you want several files to match.

The role of the limiter

Raising the level pushes the loudest moments towards the maximum a digital file can hold. The limiter gently holds those peaks back, so you get a louder file without harsh distortion.

Clean before you boost

Boosting also raises hiss and hum. Run noisy recordings through the Background Noise Remover first. Then join segments with the Audio Merger, or add captions to your louder video with the Video Caption Maker.

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