As soon as the DMAS or similar comes out, power based signal and binary will become redundant in terms of audio and video transmission.
The same can be said for compression and encoding methods, none can match optical, in a perfect scenario.
Processing parts will likely cost the most, such as the DSP (SoC) and other required components.
The price of the technology will go down in time as demand increases.
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In theory, while optical 1 bit PAM-X is digital, it also counts as an analogue of sound, if the resolution is high enough (also less parts).
Since the method counts as position-to-position in terms of microphone and speaker, its direct digital.
In short, you can map each position a microphone can be in, in colour value, opposed to long lengths of 0 and 1.
Long lengths of 0 and 1 birthed compression, which is to represent long lengths of 0 and 1.
Binary, lets say 24 x 0 and 1 pulses, is bloated compared to 1 colour pulse.
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The mixer part is drawn simply, mixing is at point.
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The same can be said for CPU and GPU processing and transmission technology, where colour value replaces binary for switch operation.
Operation is more simplified, as all switches are in the off state, until a colour pulse is received (or colour pulses).
RGB produces 16,777,216 values (equal to 24 bit binary), each value represents a switch, 1 bit.
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Fun fact, if you did an equal 24 pulses to 1 bit time, RGB (1 audio position), that would be 16,777,216^24 values (silly number).
2^24 = 16,777,216 | Binary values ^ bits used.
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1 bit PAM-X (1:1) is 24 times more efficient than 24 bit binary.