THX certification of the auditoriums includes specific acoustic and other technical requirements like floating floor, acoustically treated walls, walls without parallel walls (to reduce standing waves), a perforated screen (to ensure continuity in the center channel) and NC30 rating of background noise (avoid the noise provided by air conditioners units and projection systems). THX provides certified theaters with a special crossover circuit. THX certified theaters provides high-quality, predictable video and sound environment to ensure that any soundtrack reproductions such as those in our Speaker Test section mixed in THX system will sound as near as possible to THX sound engineer intentions. You can find a lot of vob, m2ts and mkv demos on Demolandia for testing it.

THX is not a recording technology format for the THX Demo Trailers: All sound are encoded in digital formats like Dolby Digital, SDDS, DTS or analog like Dolby Stereo or Stereo Ultra can be shown in THX. There are different resolutions for the 4K Video Test that qualify as UHD 4K:Ĥ096 × 2160 (17:9)2 (8,8 megapíxeles) – Full UHD 4Kģ840 x 2160 (16:9) (8,3 megapíxeles) (4K UHDV) UHDV 4K (2160p) used in the digital television. The UHD 4K name derives from the horizontal resolution, which is about 4,000 pixels. There are some utilities to test the correct UHD 2K and full 4K calibration in our Screen Test section.

The resolution of UHD demos is 2,048 × 1.0803 (17: 9) and 2.2 megapixels. The vertical depends on the aspect ratio with which the director decides to work. 2K represents the horizontal resolution because there are numerous aspect ratios used in films. The name derives from the horizontal resolution, which is approximately 2,000 pixels. It is an emerging UHD standard for digital film resolutions and computer graphics. The resolution for this HD format is 1280×720. The common format for Distributor Trailers is m2ts and mkv. The number 720 represents 720 horizontal display resolution lines, while the letter p means progressive scan. HD ready 720p is the short name for a HD video mode, mainly used in high-definition television (HD TV).

Dolby atmos demo disc 2021