Audio volume adjustment — Troubleshooting

Worked example

Crackling or a harsh, buzzy edge on loud words means the boosted peaks hit the ceiling.

Lower the percentage by 10 to 20 points and export again; no bitrate choice repairs clipping that has already happened.

If quiet words are still hard to hear while loud ones are fine, a single fixed gain cannot help, because it lifts both by the same factor. The tool has no compressor or normalizer, so lift the quiet part separately by cutting it out, or re-record closer to the microphone.

When the result sounds no louder than the original, the slider may still be at 100%, or the player is applying its own loudness leveling. Check the output percentage, then compare in a plain file player with no volume normalization.

A message to check the entered values appears when the number is empty or outside 0 to 200. Type a whole percentage in that range and run it again.

If the file is very long and the browser slows down or stops, the whole recording is processed locally and memory is the limit. Split it into pieces of 10 to 15 minutes, apply the same percentage to each, and join them afterwards so the level stays consistent. Whatever the cause, keep the original recording, so that you can always return to a clean starting point and try again.

Quiet voice with louder peaks

Adjusted track; peak check required

Hiss and hum get louder with the voice, so a noisy source needs a cleaner recording rather than a bigger number.