![]() Jim Kessler, who hired Holman, thought of calling the system "Tomlinson Holman's Crossover", or, as originally abbreviated, "XVR". Visiting filmmakers and studio executives were astounded at what they heard. Sprocket Systems mixed the Return of the Jedi sound in the room, the first Lucasfilm production mixed in Northern California. Using an intricate crossover network that integrated equipment with the room's unique acoustics, it became perhaps the best quality system anyone could remember hearing. In the process of enhancing the setup for the new Sprocket Systems theater, Holman and Lucas invented a complex system that arranged speakers to best fit the architectural space within the theater. Tomlinson Holman, a skilled audio engineer and scientist largely responsible for the design of the theater, had become an employee of Lucasfilm in 1980. To fix the problem, Lucas established a quality standard for commercial theaters that would use the best technology to consistently translate filmmakers' work to the theater. During this time, many movie theaters all over the world had poor room acoustics with mono surround sound. Lucas's team was unable to hear the classic Princess Leia theme, and the famous Star Wars soundtrack and sound effects, and the background noise in the theater had become much worse, muffling most of the film's sound while playing through the theater's commercial sound system. They brought their film to test in a commercial theater to find out that much of the audio detail and quality they mixed for countless hours in the studio was simply missing when played back in the cinema. ![]() That year, Lucas and his team were working on Return of the Jedi when a major situation began to arise. The C Building boasted a shooting stage, editing facilities, computer server rooms, and a large theater as a state-of-the-art sound mixing room. ![]() The C Building had been constructed in San Rafael, California, where Industrial Light & Magic and much of Lucasfilm occupied a series of work bays and office complexes along Kerner Boulevard. In 1982, George Lucas and his company, Lucasfilm, were preparing to release Return of the Jedi, the third film in the Star Wars trilogy. In 2016, THX was acquired by video game hardware company Razer Inc. Under Creative Technology, the company developed several further innovations, such as the first THX-certified audio card for computers, the Sound Blaster Audigy 2. On June 12, 2002, THX was spun off as a separate company from Lucasfilm and sold to sound card manufacturer Creative Technology Limited, which held a 60% share of the company. Certification of an auditorium entails specific acoustic and other technical requirements architectural requirements include a floating floor, baffled and acoustically treated walls, non-parallel walls (to reduce standing waves), a perforated screen (to allow center channel continuity), and NC30 rating for background noise ("ensures noise from air conditioning units and projection equipment does not mask the subtle effects in a movie's soundtrack"). THX also provides certified theaters with a special crossover circuit whose use is part of the standard. THX-certified theaters provide a high-quality, predictable playback environment to ensure that any film soundtrack mixed in THX will sound as near as possible to the intentions of the mixing engineer. All sound recording formats, whether digital ( Dolby Digital, DTS, SDDS) or analog ( Dolby Stereo, Ultra Stereo), can be reproduced in a THX system. ![]() THX is a quality assurance system, not a recording technology. was founded on by Lucas and Holman, and headquartered in San Francisco, California. Deep Note was created by Holman's co-worker James A. The name is also an homage to Lucas's first film, THX 1138 (1971). THX was named after Holman's initials, with the "X" standing for " crossover" or "experiment". THX was developed by Tomlinson Holman at George Lucas's company Lucasfilm in 1983 to ensure that the soundtrack for the third Star Wars film, Return of the Jedi, would be accurately reproduced in the best venues. The famous THX trailer that precedes movies is based on the Deep Note, with a distinctive glissando up from a rumbling low pitch. THX is a suite of high fidelity audiovisual reproduction standards for movie theaters, screening rooms, home theaters, computer speakers, video game consoles, car audio systems, and video games.
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