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The Movietone sound system is an optical sound-on-film method of recording sound for motion pictures, ensuring synchronization between sound and picture. It achieves this by recording the sound as a variable-density optical track on the same strip of film that records the pictures.
There were five speakers behind the screen, two on the side and back of the auditorium with a sound engineer directing the sound between the surround speakers according to a script. The projectors and sound system were synchronized by a system using selsyn motors. [citation needed]
The addition of audio objects allows the mixer to be more creative, to bring more sounds off the screen, and be confident of the results. [24] The first-generation cinema hardware, the "Dolby Atmos Cinema Processor", supports up to 128 discrete audio tracks and up to 64 unique speaker feeds. [25]
If you signed up for Cloud DVR (cDVR) service, you can click on a show while browsing the guide and a “record” button should appear. If you’re watching a show live, you can press “up” on ...
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 result can be played without loss of information on standard 5.1 systems or played in 6.1 or 7.1 on systems with Surround EX decoding and added speakers. A number of DVDs have a Dolby Digital Surround EX audio option.
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The most prevalent current method of recording analogue sound on a film print is by stereo variable-area (SVA) recording, a technique first used in the mid-1970s as Dolby Stereo. A two-channel audio signal is recorded as a pair of lines running parallel with the film's direction of travel through the projector's screen.