Audacity. How to remove hum and background noise from a recorded track in Audacity.
How to use the noise reduction feature in Audacity to remove ambient background noise (hiss and hum) from your vocals recordings.
Audacity is a great Free sound recording amp that has some great features... like noise reduction.
If your microphone or recording gear isn't pro quality you can end up with a lot of unwanted hiss and hum, so here is a clever (and simple) way to level up the quality of your recordings without spending any money!