Reversed phase in audio can happen when audio devices save audio in the wrong way, resulting in a bad audio, notwithstanding everything seems to sound fine with the headphones. In my case, with the Sony HDR FX1 and a shotgun mic from Rode, one channel of the audio is each time reversed. A reversed phase audio creates problems … Read moreReversed phase in audio and how to solve it
Audacity is a little gem under the free sound editors. It has a great noise removal feature which can supress static background noise as if it was never there. (Use it sparingly though, it can create weird effects. See How to reduce static in my audio? for more info about avoiding static.) There are many … Read moreAudacity, free sound editor
Some sound editors, like Audacity from SoundForge can reduce static noise, but the disadvantage is that it deforms the audio. Therefore, it is best to quelch static before it hits the sound card, so to speak. The most common problem is the microphone (or headset) related to its surroundings. If you are recording sound next … Read moreHow to reduce static in my audio?