I have just now recovered from an insidious virus that eventually crippled my XP box to the point where it wouldn't even boot. No problem, I just wiped the drive and installed Windows 7. I had Norton 360 backups of everything.
No, I didn't. It didn't do a complete backup (unbeknownst to me).
So now I have a client needing some simple RT60 calcs by Monday, and I'd rather not code them myself, as simple as they might be. Any hints on a website or downloadable Excel spreadsheet (virus alert!) that might have a good selection of standard absorption materials available in library format, as well as RT60 calcs based on geometric inputs (surface area and volume)?
Thanks,
ja