When motion pictures were first introduced, there were three major problems with producing movies with synchronized sound. Those problems were synchronization, playback volume, and sound fidelity. As Technology for producing moving pictures has progressed much faster than technology for reproducing sound. It soon became possible for the technology to produce sound that could be heard by large audiences.
This technology was held in the grip of RCA and Western Electric, which, in 1926, cross-licensed each other’s amplification patents. Using state-of-the-art vacuum tube amplifiers, movie sound, whether recorded on disc or film, could boom into the auditorium.
By the early 1930s, the talkies were a global phenomenon. In the United States, they helped secure Hollywood's position as one of the world's most powerful cultural/commercial systems. In Europe the new development was treated with suspicion by many filmmakers and critics, who worried that a focus on dialogue would subvert the unique aesthetic virtues of soundless cinema.
Some of the films of early 1929 were substandard movies to meet the unexpectedly strong demand for talkies.
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