Links and resources

Books

The Master Handbook of Acoustics By Frederick Alton Everest, Google books

Audio engineer's reference book By Michael Talbot-Smith, Google books

Sound engineer's pocket book By Michael Talbot-Smith, Google books

Educational

Acoustics and Vibration Animations - Dan Russell, Kettering University

Studiotips.com, some tips... and a Forum about acoustics for small rooms.

Material (commercial)

Real Traps, Absorption pannels and good "How To" section, videos and more.

Ready Acoustics, Simple design with good material, full range of absorbers, even Do-It-Yourself kits.