Back

@azonenberg The overly broad use of "distortion" is potentially a problem. Then pre-emphasis is described as usually a weakening HF on send and strengthening on receive, which is the opposite of what happens on any analog broadcast system (AM and FM both tilt the response up on transmit, then the opposite on the receiver).

@azonenberg One way people get confused with pre-emphasis in broadcast is that protection limiters have to implement the limit/clip point in the opposite way to the pre-emphasis slope in order to keep modulation limits correct. This can be a simple as putting them after the pre-emphasis circuits, in the chain, but that only gets you so far (channel width filtering and the associated overshoot compensation is further along the chain, for instance)

@synx508 Basically I'm trying to improve the discussion of emphasis in digital communications, without saying anything wrong about how it works in broadcast.

Can I possibly interest you in refactoring that intro to make the split more clear, maybe moving some stuff into the audio section?

@azonenberg I see. Not sure I'm ideal for that, I've already got myself to the point where I can't parse any of it because I've read it too many times. I'll read it a bit later (when it might be different anyway) and see if I can suggest an improvement.

@synx508 Little if any of the intro is my work, I can tell it needs to be redone but haven't had time to figure out how to phrase it.

The digital communications section is where I've spent most of my time.