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Founded 1983
Headquarters Flag of the United States United States
Industry Audio
Website www.THX.com

THX is the trade name of a high-fidelity sound reproduction standard for movie theaters, screening rooms, home theaters, computer speakers, gaming consoles, and car audio systems. THX stands for Tomlinson Holman's eXperiment. THX was developed by Tomlinson Holman at George Lucas's company Lucasfilm in 1982 to ensure that the soundtrack for the third Star Wars film, Return of the Jedi, would be accurately reproduced in the best venues. THX usually refers to THX The sound-system standard promulgated by Lucasfilm. ... Image File history File links Download high resolution version (1209x483, 5 KB)THX logotype File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File links This is a lossless scalable vector image. ... This article is about audible acoustic waves. ... A website (alternatively, Web site or web site) is a collection of Web pages, images, videos or other digital assets that is hosted on one or several Web server(s), usually accessible via the Internet, cell phone or a LAN. A Web page is a document, typically written in HTML... Tomlinson Holman is an American film theorist and inventor of film technologies, notably the Lucasfilm THX sound system. ... In the scientific method, an experiment (Latin: ex- periri, of (or from) trying) is a set of observations performed in the context of solving a particular problem or question, to support or falsify a hypothesis or research concerning phenomena. ... Tomlinson Holman is an American film theorist and inventor of film technologies, notably the Lucasfilm THX sound system. ... George Walton Lucas, Jr. ... Lucasfilm Ltd. ... Year 1982 (MCMLXXXII) was a common year starting on Friday (link displays the 1982 Gregorian calendar). ... In film formats, the soundtrack is the physical area of the film which records the synchronized sound. ... This article is about the series. ... Movie poster Star Wars Episode VI: Return of the Jedi, is a science fiction film that debuted in 1983, and re-released with changes in 1997 and 2004. ...

The THX system is not a recording technology, and it does not specify a sound recording format; all sound formats, whether digital (Dolby Digital, SDDS) or analog (Dolby SR, Ultra-Stereo), can be "shown in THX." THX is mainly a quality assurance system. 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. THX also provides certified theaters with a special crossover circuit whose use is part of the standard. Certification of an auditorium entails specific acoustic and other technical requirements; architectural requirements include a floating floor, baffled and acoustically treated walls, no parallel walls (to reduce standing waves), a perforated screen (to allow center channel continuity), and NC30 rating for background noise. Dolby Digital is the marketing name for a series of lossy audio compression technologies by Dolby Laboratories. ... SDDS stands for Sony Dynamic Digital Sound, which is a cinema sound system developed by Sony. ... Dolby Analog SR or Dolby SR format (Spectral Recording), was developed by Dolby Laboratories and has been in common use in professional audio since 1986. ... Quality assurance (QA) is the activity of providing evidence needed to establish confidence among all concerned, that quality-related activities are being performed effectively. ... This article is about motion pictures. ... Audio mixing is used in sound recording, audio editing and sound systems to balance the relative volume and frequency content of a number of sound sources. ... Audio crossovers are a class of electronic filters designed specifically for use in audio applications, especially hi-fi. ... An electronic circuit is an electrical circuit that also contains active electronic devices such as transistors or vacuum tubes. ... Acoustics is the branch of physics concerned with the study of sound (mechanical waves in gases, liquids, and solids). ... A Floating Floor is a floor that does not need to be nailed or glued to the subfloor. ... Vibration and standing waves in a string, The fundamental and the first 6 overtones A standing wave, also known as a stationary wave, is a wave that remains in a constant position. ... In acoustics and specifically in acoustical engineering, background noise is any sound other than the sound being monitored. ...



THX sets strict standards for high quality sound and images. Image File history File links Broom_icon. ...

According to Tomlinson Holman, the inventor of the THX system, the name of the technology was deliberately chosen because it contained both a reference to his name, and to Lucas's early film, THX 1138. The original name was "Tom Holman's Crossover" (Crossover being sometimes referred to as Xover) or the "Tom Holman eXperiment." THX 1138 was George Lucas first full length movie. ...

THX Ltd., the company that licenses THX and the associated technology, is based in San Rafael, California, but has offices in Burbank and Hollywood. San Rafael (IPA: ; originally IPA: ), is the county seat of Marin County, California, United States. ...

THX launched a certification program for HD video products to ensure HD projectors, LCDs, plasmas and DVRs meet high standards for quality. The TiVo Series3 HD DVR and a number of projectors from Runco and Vidikron became the first THX Certified HD products. TiVo corporation designed a number of digital video recorders which have been produced and sold by a number of other companies. ...

The THX II Certified Car Audio System can be found in many Lincoln automobiles produced since 2003. The system was recently recognized among the Best Car Audio Systems of 2006 by the editors of CNET. Lincoln is an American luxury automobile brand, operated under the Ford Motor Company. ...

THX Ltd. started a licensing program for home screening rooms in 2005, which requires standards similar in concept, though not in detail, to its cinema certification program; before this happened, there was a very small number of (very expensive) home theatres which were actually constructed to THX Cinema standards, most notably that of actor and comedian Eddie Murphy. For other uses, see Eddie Murphy (disambiguation). ...

The world's largest THX cinema is the Colosseum Kino in Oslo, Norway. This January 2007 does not adequately cite its references or sources. ... This article is about the capital of Norway. ...

The distinctive crescendo used in the THX trailers is known as the "Deep Note." Crescendo may mean: In musical notation, crescendo refers to a passage of music during which the volume gradually increases. ... Deep Note in Audacity in Ubuntu Linux Deep Note in Baudline in Linux Deep Note in Baudline in Linux(zoomed to 5kHz) Deep Note is the name of THXs audio logo, a distinctive synthesized crescendo sound. ...

The character in the THX trailers is called "Tex" and was created by John Lasseter at Pixar. This articles does not cite any references or sources. ... John A. Lasseter (born January 12, 1957 in Hollywood, California) is an Academy Award-winning American animator and the chief creative officer at Pixar Animation Studios and Walt Disney Feature Animation. ... Pixars studio lot in Emeryville Pixar Animation Studios is an American computer animation studio based in Emeryville, California (USA) notable for its seven Academy Awards. ...

The THX trailer entitled "Cimarron" which first appeared at the start of the 1988 film Willow, used music composed by James Horner which featured a variation of the "Deep Note". Willow is a 1988 fantasy film directed by Ron Howard, based on a story by George Lucas. ... James Roy Horner (born August 14, 1953) is an American composer of orchestral and film music. ...

The THX broadway logo on a DVD has a lower-pitched deep note, while the VHS logo had a higher-pitched deep-note that was similar to wings, but the THX laserdisc logo keeps the original deep-note on the 29-sec logo.

The first theater THX was used in was at the University of Southern California's Eileen Norris Cinema Theatre as a part of USC's acclaimed film school. The Norris Theatre's THX system is currently second-best in California to that of the Grauman's Chinese Theatre.[citation needed] The Trojan Shrine, better known as Tommy Trojan located in the center of University of Southern California campus. ... This article does not cite any references or sources. ...

Other Tom Holman Innovations

THX inventor Tomlinson Holman has continued his work in entertainment technologies under his current company, TMH Corporation http://www.tmhlabs.com

While distinct from the THX Certification, the 10.2 surround sound system has also been spearheaded by Holman. 10.2 includes a front-left, top-front-left, front-right, top-front-right, surround-left, top-surround-left, surround-right, top-surround-right, center, "god" (top-center, above the screen), and front and back subwoofers. A 10.2 surround system is currently installed at the Integrated Media Systems Center at USC.

Film References

Some trailers have references to, or are stylized to match, various films. Examples include:

  • Shrek (series): The THX logo appears with its characteristic sound, followed shortly by the logo falling over, revealing that it is really just a wooden cutout. Behind the logo, Shrek and Donkey are shown playing the "Deep Note" sound with various instruments. Shrek rights the cutout/logo, and the sequence finishes as Shrek and Donkey poke their heads in from off-camera, for one final exchange.
  • Terminator 2: A modified version of the "Cavalcade" trailer shows an electrified ball of energy appear on the screen, which is quickly replaced with an identity scanning device. The device fires beam that scans left to right, as if scanning the viewer's eyes, after which the "T2" logo appears. The logo is then shot by the Terminator (his reflection is slightly visible on the logo) causing it to explode into small, irregular pieces. Sparks fall as the pieces slowly melt into a silvery liquid, which then transforms back into the THX logo.
  • Toy Story: The THX logo starts as usual, which then breaks down as if due to an electrical failure. A light is switched on as Tex rolls in from off-camera, opens a panel on the X, grabs a rocket pack, and flies off screen, pulling out a hammer just before he goes off screen. Tex hammers at something on the right side of the screen, drills at something on the left side, audibly complains after dropping one of his tools, and then flies over to the T and moves a large switch. The switch causes the logo to re-activate and complete its usual sequence.
  • Tenacious D in: The Pick of Destiny: A short animated segment of Jack Black and Kyle Gass performing a sound check which consists of the duo farting precedes the logo with the subtitle: The audience is baking. The classic THX tone is replaced by two farting sounds in the same tone.

It has been suggested that Shrek 4 be merged into this article or section. ... Shrek is a fictional character from the childrens book Shrek! and the Shrek films. ... Donkey is a fictional talking donkey from the Shrek series of films, voiced by Eddie Murphy. ... Terminator 2: Judgment Day (commonly abbreviated T2) is a 1991 movie directed by James Cameron and starring Arnold Schwarzenegger, Linda Hamilton, and Robert Patrick. ... Toy Story is an Academy-award-winning CGI animated feature film produced by Pixar Animation Studios and released by Walt Disney Pictures and Buena Vista Distribution in the United States on November 22, 1995, and Australia on December 7, 1995, as well as in the United Kingdom on 22 March... For other persons named Jack Black, see Jack Black (disambiguation). ... Kyle Richard Gass (born July 14, 1960)[1] is an American actor and a member of the band Tenacious D (along with Jack Black) and Trainwreck. ...


In Tiny Toon Adventures: How I Spent My Vacation, a film within the movie begins with a hand holding a wand as if to call an orchestra to order, which then touches off a dischordant, ridiculously loud, powerful trailer. The force of the sound is shown blasting characters from their seats. As the trailer comes to a close, text appears on the screen reading: "THUD Sound Systems, a division of Mucasfilm LTD". The trailer ends with a voice speaking the words "The audience is now deaf."

In Rocko's Modern Life episode 5, No Pain, No Gain, the Nick cave id by Funline plays extremely loudly causing the ground to shake, Heffer to descurt and rocko's head to explode. Despite this, Fillburt still demands that they turn the volume up. Rockos Modern Life is an American animated television series whose four seasons aired from 1993 to 1996. ... No Pain, No Gain was an episode of Rockos Modern Life. ...

During the scene where the people send a few things back in the film The Wild Thornberrys Movie, Donny accidentally steps on a television remote control, turning the TV on to reveal the Nick logo and the "Cave" music. The Wild Thornberrys Movie is a 2002 animated feature film based on the animated series of the same name. ... A television remote control A remote control is an electronic device used for the remote operation of a machine. ...

See also

Home cinema, also called Home theater, seeks to reproduce cinema quality video and audio in the home. ... // Overview AV Receivers are one of the many consumer electronics components typically found within a home theatre system. ...

External links

  • THX Official Website
  • Official THX Create a Trailer Contest 2006
  • Home Theatre Program launch

  Results from FactBites:
THX 1138 (713 words)
THX 1138 was written and directed by George Lucas and produced by Francis Ford Coppola.
THX begins to feel ill and he suspects that LUH is poisoning him, so he goes to a unichapel to speak with Ohm.
THX is sentenced to be mentally and physically conditioned and then placed in a holding area until his body parts are needed for transplantation.
THX (825 words)
THX strove to recreate the experience the director had and intended as he and his staff created and edited the movie.
THX also certifies laserdisc and DVD players, equalizers, receivers, and acoustically transparent projection screens (screens with microscopic holes allowing speakers to be placed behind them with little or no sound quality degradation).
THX has served to enhance and advance the state of the art in home theater systems, and a THX system using good quality components is a sure-fire way to get a top-notch movie theater experience at home (when the system is properly installed and designed to meet the needs of a particular space).
  More results at FactBites »



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