Can you give examples where analog filters can do things that can't be done by any software filter? By software filters are meant after the analog signals got into the ADC (Analog to Digital Converters).
I mean, back in the 1970s. They used sharp audio band filters or LCR band filters and then used spark/arc plotters to plot the envelope amplitude output from each of those filters. Can software filters like from REW able to do these too? If not. Please give examples something that can't be captured by software filtering and editing and need 1970s analog technology.
Remember some used vacuum tubes or 1950s technology for audio.
I mean, back in the 1970s. They used sharp audio band filters or LCR band filters and then used spark/arc plotters to plot the envelope amplitude output from each of those filters. Can software filters like from REW able to do these too? If not. Please give examples something that can't be captured by software filtering and editing and need 1970s analog technology.
Remember some used vacuum tubes or 1950s technology for audio.