Boost Audio Volume Online

Amplify a quiet recording by a set number of decibels and download the louder file, so an interview taken at arms length becomes audible.

Drop a file or click to upload

How to use

  1. Drop the quiet recording.
  2. Set the gain in decibels, 6 dB roughly doubles perceived loudness.
  3. Click Process and download the louder file.

Frequently asked questions

How many decibels should I add?

6 dB is about a doubling in perceived loudness and is a safe first try. Push to 12 only if the source was recorded very far from the microphone.

Will it clip if I go too far?

Yes. Gain is applied straight to the samples, so anything that crosses full scale is flattened and turns into crackle. Back off and re-run if you hear it.

Does boosting also raise the background noise?

It raises everything by the same amount, hiss included. If the room noise becomes obvious, run the recording through the noise removal tool first.

Can I use a negative value to make it quieter?

Yes. Enter a negative gain and the track is attenuated, which is useful when one file in a set is far louder than the rest.

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