First of all, I am by no means a professional audio/video engineer... In fact, this was my first attempt ever at using a external lavalier mic. I even went so far as to use headphones while recording and did pick up on some distortion but I could not figure out why it was happening. I'm using iMovie to edit the video and I have made an attempt to correct the distortion in Audacity but have not had any luck so far. The crazy part is that the wave form doesn't have any clipping yet the distortion is still there so I'm at a loss and need help. Is there anyone who can give me some tips/advice on what I can try to do. I would also be happy to send the audio clip to anyone who may want to check it out. Thank you in advance and I hope to hear from you soon.