BenVersluis.com

This site has been around for awhile, but, just recently, it started to recieve a slew of original content (see interview with Jack Douglas) as well as constant updates by Wiki nerds. There’s some awesome topics (both obscure and common). So if you’re looking to geek out over audio knowledge, check out Wikiaudio.

Check out this website. It takes the Equal-loudness contour concept and places it into a friendly flash application for you to test yourself.

If you’d like to read up on the Equal-loudness contour, check out it’s Wikipedia page here.