A recording may be difficult to hear when it was captured far from the microphone or at a low input level. Increasing volume can improve...

What this tool helps you do

A recording may be difficult to hear when it was captured far from the microphone or at a low input level. Increasing volume can improve audibility, but it cannot restore missing speech or remove noise that is already present.

Steps for a reliable result

Load the file into the Audio Volume Booster and choose a moderate increase. Preview the loudest sections, then export and listen on the device where the recording will be used. If the tool supports video files, check that the picture and sound remain synchronized.

Things worth checking

Large boosts can amplify hiss, room noise, and distortion. Avoid clipping the loudest peaks, and compare the boosted copy with the original. If only quiet speech needs help, noise reduction or dynamic-range processing may be a better next step.

Related tools

Depending on your next step, you may also find Audio Compressor, Audio Trimmer and Video To Audio useful. Choose the tool that matches the task instead of converting or editing a file more than necessary.