Where does this come from, and can I check it?

George Lucas's company introduced it in 1983 alongside Return of the Jedi. The figure is taken from THX, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a movies & tv fact?

Yes. It sits on the Movies & TV shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

THX began as a standard for cinema sound

George Lucas's company introduced it in 1983 alongside Return of the Jedi THX was developed by Lucasfilm and launched in 1983 with the release of Return of the Jedi. It is not a sound format but a set of requirements for room acoustics, amplifiers and speakers that a cinema must meet before displaying the logo. The first certified room was in Marin County, California. It sits in Mondo's movies & tv collection, one of 200 facts that each trace back to the reference below.

Where this comes from

THX

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More facts like this

Surround sound uses six separate channelsFive full-range channels plus a low-frequency channel carry the mix Actors often re-record their lines after filmingAutomated dialogue replacement fixes noise and rewrites in the edit Early sound films hired musicians to play on setLive orchestras performed behind the camera so actors had a beat to move to A click track kept film musicals in timeA pulse played through headphones let performers match a recording Boom operators hold the microphone just out of frameA long pole lets the mic follow the actors without entering shot A blimp muffles the sound of the cameraSoundproof housings let noisy film cameras run during dialogue scenes

Tags: sound, thx, lucasfilm

THX began as a standard for cinema sound: the short answers

Where does this come from, and can I check it?: George Lucas's company introduced it in 1983 alongside Return of the Jedi. The figure is taken from THX, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a movies & tv fact?: Yes. It sits on the Movies & TV shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.