Research Paper- Surround Sound Development of Surround Sound We are now entering the third age of reproduced sound. The monophonic era was the first age, which lasted from Edison's invention of the phonograph in 1877 until the 1950s. During those times the goal was simply to reproduce the timbre of the original sound. No attempts were made to reproduce directional properties or sound realism. The stereo era was the second age. It was based on inventions …showed first 75 words of 1714 total…

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