I am a proud owner of a real atari 7800, which I play with RF on my old tube tv. Using emulation I can get a much crisper picture, obviously, which is nice, but one thing I find the real thing does better is audio. The RF signal distorts the audio quite a bit, but for 2600 games that is actually a good thing. The sounds coming out of the 2600 are sharp and harsh, and need some of that distortion to soften them and make it sound right.
I was wondering if it is possible to add some sound filters in retroarch to achieve the same thing. I have played around with some of the audio filters that are available, and nothing seems to have much effect. Any suggestions? Thank you.