What technological hurdle was perhaps the most significant in creating the modern home theater system regarding audio?

Answer

The development of surround sound.

While visual components were necessary, the audio element has consistently been considered the true heart of the immersive experience. Replicating the complex spatial sound fields characteristic of movie theaters required a significant advancement beyond simple two-channel stereo. The development and implementation of surround sound technology represented the most crucial technological barrier that needed to be overcome to bring authentic cinema audio into the home. This involved developing complex encoding and decoding standards necessary to distribute discrete audio channels accurately across multiple speakers.

What technological hurdle was perhaps the most significant in creating the modern home theater system regarding audio?
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