I'd like to recreate the voice channel pre-grouping typical of a phone company central office: taking separate voice bands (300-3400hz and upconverting to 12, 16 and 20khz carriers (as described here http://en.wikibooks.org/wiki/Communication_Systems/Frequency-Division_Multiplexing).
I'm looking for circuit diagrams and/or discrete components that accomplish this.
My goal is to do this analog with with no buffers and minimal latency)? I'm sure these used to be dime-a-dozen.
Any thoughts or guidance?
I'm looking for circuit diagrams and/or discrete components that accomplish this.
My goal is to do this analog with with no buffers and minimal latency)? I'm sure these used to be dime-a-dozen.
Any thoughts or guidance?