When you’re out and about with your portable studio, you don’t always have the perfect acoustic environment to record in. If you have to record an interview in a room with bad sound distribution, you can create a mini-vocalbooth using a few pieces of acoustic foam and an appropriate container (well, a box of some sort). Put your microphone in it and it will be protected from much of the sonic interference of the room. Harlan Hogan writes about how to make such an enclosure at digtialmedia.net. He also mentions a great emergency tip – if all else fails, one of the best acoustic spaces readily available to the roving podcaster is the modern automobile (if you can convince your interviewee to sit in, of course).