I suddenly am having a rather strange audio problem. Whether recording speech or music, quiet or loud audio, there is a crackling sound that occurs intermittently. It seems to have appeared at the same time we changed to the highest quality video setting. Up until that time, we were recording on the next quality setting down. Have not had the opportunity to go back to that setting to see if that makes a difference. Has anyone complained about this problem and is it something that can be repaired?