I recorded a couple songs with my SM58 mic and Behringer UM2 soundcard through Audacity and everything sounded great. Until today I wanted to record something and the background noise was ridiculous. I didn't change any settings. I dont know what happened but I couldn't edit the vocals or turn them up because there was too much noise. I played about with the gains etc but still no change. I also recorded a couple of seconds of just silence and the noise is way too high. The only thing I changed is before I recorded Xlr to Xlr. Now I am recording Xlr to Lead because I've left my cable at my friends. Could that make a difference?
The cable could make a difference. Microphones isolate sound so when there is too much noise it can still pick up on background noise if it’s as loud as you. I would suggest recording with all the materials that you usually use and if there’s too much noise where you usually record rent a studio or make one at home. Making one at home doesn’t mean putting money into it, it could just be a quiet place like an office or room that sound doesn’t carry the same through. If you want to cut out some of the sound, doing something as simple as hanging thick bedsheets in a hallway, on the wall, or windows to block the source of exterior sound can make a huge difference. Also if the noise where you usually are is too bad and also a distraction, a simple solution is waiting for people to leave or trying a different, simple location if it’s something that can’t be helped such as a neighbor or lawnmower.