ITWissen.info - Tech know how online

high definition (HD)

High Definition (HD) is a quality rating that represents better quality than standard quality. The HD designation stands for high definition and is used primarily in audio, video and television technology, as well as for recording, transmission and display. All HD technologies and products are superior to standard products in quality, playback, storage capacity, compression

, or other respects

HD in Television and Displays

One of the better-known HD examples is found in television and video technology, high-definition television (HDTV). While actual standard-definition television (SDTV) has a resolution of720 x 576 pixels at a 4:3 aspect ratio, high-definition HDTV brings it to 1,280 x 720 pixels at a 16:9 aspect ratio, in the lower-resolution mode. In high-definition mode, it's as high as 1,920 x 1,080 pixels, which is equivalent to the 2K standard. A much higher resolution is offered by Ultra High Definition (UHD), which is Ultra High Definition Television (UHDTV), which has a resolution of 7,680 x 4,320, which is sixteen times that of HDTV and is equivalent to the 8K standard

85-inch monitor in UHDTV by Samsung, photo: pocket-lint.com

85-inch monitor in UHDTV by Samsung, photo: pocket-lint.com

In addition to Full HD in 16:9 format, there is also an HD variant in ultra-wide format with an aspect ratio of 21:9, which is called Ultra Wide QHD

(Quad High Definition) and has a resolution of 3,440 x 1,440 pixels

HD in audio

The term High Definition is used in many high-definition techniques, including HD

audio, which ischaracterized by a fullness of sound

that exceedssurround

soundaccording to Dolby. For example, HD audio is characterized by HD audio formats such as Dolby Digital Plus and Digital Theatre Sound High Definition (DTS-HD), which use lossy compression but have a smoother, more voluminous sound thanks to the higher sampling rate. There's also studio-quality HD audio, namely Dolby TrueHD and DTS-HD Master Audio. Sound reproduction with 8 or more speakers

adds tothe sound enjoyment.

The term High Definition is also used in broadcasting technology.

High Definition Multimedia Interface (HDMI) is such an interface designation, which is characterized by a high data rate that is far above those of standard interfaces such as the USB interface.

Informationen zum Artikel
Englisch: high definition - HD
Updated at: 02.01.2018
#Words: 494
Links:
Translations: DE