![]() In addition to the legacy test signals we and other reviewers use to evaluate HDTVs, THX created some of their own patterns (see photos). Inside THX’s test lab, we observed their array of test signals and procedures. We jumped on the chance to pierce the armor of secrecy surrounding THX’s video standards. Our host provided a complete copy of its requirements and specifications for certification with the understanding (for competitive and business reasons) we would only publish the list of test categories with a limited number of the exact specifications. (Disclosure: THX paid expenses to visit its San Rafael headquarters) THX chose the HD Guru as the first journalist to reveal details about its display testing program. To receive THX certification a display must pass a battery of tests incorporating over 400 data points. More recently, THX introduced new standards for home HDTV certification (for more on THX history click this link). Later, THX began an audio certification program for home theater. ![]() (May 4, 2010) Director George Lucus created the THX Certification program in 1983 to institute audio and film reproduction standards for movie theaters.
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