Read the following passage & mark the letter A, B, C, or D on your answer sheet to lớn indicate the correct answer khổng lồ each of the questions from 1 to 10.

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History books recorded that the first film with sound was The Jazz Singer in 1927. But sound films, or talkies, did not suddenly appear after years of silent screenings. From the earliest public performances in 1896, films were accompanied by music & sound effects. These were produced by a single pianist, a small bvà, or a full-scale orchestra; large movie theatres could buy sound-effect machines. Research inkhổng lồ sound that was reproduced at exactly at the same time as the pictures - called "synchronized sound" – began soon after the very first films were shown. With synchronized sound, characters on the movie screen could sing and speak. As early as 1896, the newly invented gramophone, which played a large disc carrying music & dialogue, was used as a sound system. The biggest disadvantage was that the sound và pictures could become unsynchronized if, for example, the gramophone needle jumped or if the tốc độ of the projector changed. This system was only effective for a single tuy vậy or dialogue sequence.In the "sound-on-film" system, sound was recorded as a series of marks on celluloid which could be read by an optical sensor. These signals would be placed on the film alongside the image, guaranteeing synchronization. Short feature films were produced in this way as early as 1922. This system eventually brought us "talking pictures".

A. retìm kiếm inlớn sound reproduction.