What is a THX Certified Cinema?

Most movie fans have heard the THX Deep Note sound effect playing before a favorite film. But, what exactly is THX? Is it the same as Dolby Surround Sound or DTS?

Making of a THX Trailer (Amazing Life)

The storyline for Amazing Life provided a fun and entertaining way to demonstrate the power and performance of a THX Certified Cinema’s surround sound and projection system, while getting audiences excited for the feature presentation.