The Drájyór (སྒྲ་སྦྱོར་ sgra sbyor = སྒྲ་ sound སྦྱོར་ adjust) is a phonetic transcription system for Tibetan language devised by Chögyal Namkhai Norbu.

Discover more here http://drajyor.atiyogafoundation.org/drajyor-intro/