Good point. If the audio quality is that muddy--one could do a found footage type reconstruction...
What?? Why would you want to? What a pointless gimmick.
What I'm saying is that TAS is what it is. It's a creation of a particular time and context and should be accepted in that light. Indeed, for a Saturday morning cartoon from the early '70s, it's a damn sight better than we would've had any right to expect.