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5.1 surround sound ("five-point one") is the common name for surround sound audio systems. 5.1 is the most commonly used layout in home theatres. [1] It uses five full-bandwidth channels and one low-frequency effects channel (the "point one"). [2]
In the 2020s, a home cinema system typically uses a large projected image from a video projector or a large flat-screen high-resolution HDTV system, a movie or other video content on a DVD or high-resolution Blu-ray disc, which is played on a DVD player or Blu-ray player, with the audio augmented with a multi-channel power amplifier and ...
The term audio/video receiver (AVR) or Home Theater Receiver is used to distinguish the multi-channel audio/video receiver (home theater receiver) from the simpler stereo receiver, though the primary function of both is amplification. AV receivers may also be known as digital audio-video receivers or digital media renderers. [3]
However, whereas a 5.1 surround sound system combines both surround and rear channel effects into two channels (commonly configured in home theatre set-ups as two rear surround speakers), a 7.1 surround system splits the surround and rear channel information into four distinct channels, in which sound effects are directed to left and right ...
Channel number 3 0–3 Sampling frequency: 0000 2: 44.1 kHz, 0100 2: 48 kHz, 1100 2: 32 kHz 4–5 Clock accuracy: 10 2: 50ppm, 00 2: 1100ppm, 01 2: variable pitch (requires compatible receiver) 6–7 Undefined 4 0 Word length 20 bits Word length 24 bits 1–3 Sample length (0: undefined, 1–4: word length minus 1-4 bits, 5: full word length) 4–7
SDDS channel arrangement with 5 front channels, 2 surround channels and a subwoofer channel or "5/2.1". Original format used: 8 micron (micrometre) square data bits, 16 bit per audio channel, 8 audio channels, 2 clock tracks, 2 guide tracks for alignment with the film. Final format used: 24 micrometre square data bits.
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