Câu hỏi:
10/09/2023 1,049Surround sound first showed up with Walt Disney's "Fantasia" in 1941. To show the movie with surround sound, a movie theater had to spend $85,000 for a special setup that included custom loudspeakers and required two projectors, one running the film and one track of audio plus a second one (16) _______ to four special audio tracks.
Because of the (17) _______ , the full surround-sound system was only installed in two theaters: one in Los Angeles and (18) _______ in New York. Many theaters offered surround sound as the magnetic-based sound became popular, allowing four or even six channels of sound. Dolby A noise reduction allowed films to have stereo optical tracks. (19) _______ , even Dolby A couldn't compensate for the level of noise if more than two optical tracks were put on the film. A major breakthrough in surround sound came (20) _______ Dolby Stereo was created.
that included custom loudspeakers and required two projectors, one running the film and one track of audio plus a second one (16) _______ to four special audio tracks.
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Chọn B
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Chọn D
Câu 3:
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Chọn A
Câu 4:
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Chọn C
Câu 5:
A major breakthrough in surround sound came (20) _______ Dolby Stereo was created.
Lời giải của GV VietJack
Chọn A
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