Sound and microphone
How to reduce a 50 or 60 Hz hum in audio
Work out whether the noise is a steady tone or low rumble and try the notch filter or the low cut on the affected source.
Open QuickEditThe editor interface is in Spanish for now. Button names appear in Spanish, followed by their meaning in English.
Identify the noise you hear
Listen to a pause in the file with the track in Solo. A low tone that stays at one frequency usually responds better to a notch. A broader rumble, such as from a table or microphone vibration, may improve with a low cut. Select the affected lane in FX so the music on other tracks keeps its bass.
Try the notch
Add Filtro de muesca (notch filter) and try the 50 Hz or 60 Hz button depending on the tone you hear. Listen to a pause and a phrase with the filter on. If the hum remains, adjust the frequency around that point. Raise the Q to narrow the treated band if the setting takes away part of the body of the voice.
To reduce rumble, try Cortagraves (low cut). On a voiceover you can start around 80 Hz and adjust to the take. Listen to the voice before raising the cut, because part of its tone can also sit in that range.
Check the result in the mix
Switch between Antes (before) and Después (after) at roughly the same level. For noise that appears mostly between phrases, try a gate or silence the reviewed pauses. When you have the setting, save the project and check the exported WAV by listening to a pause and a spoken part.