Hello, I just shot two scenes for my next instructional video using a newly purchased wireless mic. When I went to capture it on my computer, I noticed a lot of scratchy noise on the audio track that is not there on footage shot earlier with the exact same camera and set up? I was using photo lights but there were overhead florescent lights on in the studio. Could these be making the noise? I just shot some new video with no wireless mic and no florescent lights and dumped that to my computer and there was no noise. Are there any solutions to this problem?