I was just wondering if there is a freeware or trial program that I could install onto a laptop that would do the same thing as a RadioShack SPL meter. I do have an internal mic on the laptop, but I also have an external mic that I can use. I wasn't sure if this post should have gone in the Computer/HTPC area of the forum or not. If an admin wants to move it to the correct section, go right ahead. Thanks!