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THX Deep Note – Our legendary sound

    https://www.thx.com/deepnote/
    It is the deeply resonant chord that plays at the start of any THX Certified performance. The THX Deep Note was composed by Lucasfilm sound …

THX reference level explained - Acoustic Frontiers

    http://www.acousticfrontiers.com/2013314thx-reference-level/
    Most pre-processor and audio video receivers have embedded pink noise test tones used for level setting that are recorded at -30dB relative …

THX SETTINGS IN HOME THEATER SYS - Stones Sound Studio

    http://www.stonessoundstudio.com.au/stone/thx_settings_in_home_theater_systems.htm
    Setting up a home theater speaker system using a THX test tones ( broard band white noise) played back from the DVD player is one of the better ways to hear not only the sound signature of each speaker tweeter midrange and bass but also its real SPLdb (Speaker pressure Level) level. The THX test tones are actually testing the response of the home theater system all the way …

A THX sound system test - YouTube

    https://www.youtube.com/watch?v=Rt6fXa60Y8A
    The famous THX Sound System Test here on Youtube. The famous THX Sound System Test here on Youtube.

Has anyone noticed this w/Receiver Test Tones vs. THX ...

    https://www.avsforum.com/threads/has-anyone-noticed-this-w-receiver-test-tones-vs-thx-optimizer.530673/
    This test verifies that the speaker channel assignments are correct for a 5.1-channel or 7.1 sound system (left output from the receiver is going to the left speaker, center output to the center speaker, etc.) and that the audio output is balanced. To perform the test, modified pink noise (a “hissing†sound or static) will emanate from each audio channel.

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