Looking for help ... I record podcasts using a Blue Snowball mic and Garage Band on my Mac. I get good quality except for the fact that there's sometimes an obnoxious buzzing that occurs when a person is talking. The buzzing isn't really noticeable when there's silence between words, but it's definitely audible behind a voice.
Listen here to get an idea of what I'm talking about: http://www.gctelegram.com/podcasts/
Is it feedback from the mic? Other ideas? How can I fix it?
Any suggestions would be appreciated!