Analog Surround Sound Was Everywhere, But You Probably Didn’t Notice
Most of the media we consume is digital, with movies and TV shows packaged in digital files containing millions of pixels and multiple audio channels.
In the past, media on film or tape was limited to analog stereo audio due to engineering limitations.
However, Dolby created a surround sound format that could operate within these limitations, turning two channels into four.
Dolby’s surround sound efforts were not initially aimed at the home, but at the cinema.
This format, which started as a cinematic format, brought surround sound to the home as early as 1982.
Author's summary: Dolby introduced analog surround sound in 1982.
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