The International Phonetic Association is master over the International Phonetic Alphabet—the IPA. Here’s their website: http://www.langsci.ucl.ac.uk/ipa/
Why might learning the IPA be useful for actors? I have two main reasons that I teach it to my students (other than just to make them suffer as I had once suffered, much like the ongoing practicing of having doctors do a residency… What up with that?)
