Is there a way to use that?

Yes. One way to do it would be to create an electronic module that interprets this data and then sends ASCII speed information to an RS-232 serial cable. Then you would write a piece of software on the empeg to read the RS-232 serial cable and do the appropriate things depending on the information it received.

As you can see, this is not a simple project, but it can be done. No one has done it yet.

As I said in another thread, though, I'm wondering if that would be overkill. Since the empeg is just line-level output, wouldn't it be simpler to just make a generic speed-controlled or ambient-noise-controlled "attenuator box" with line level inputs and outputs? You could do the whole thing analog and wouldn't even need to write software for the empeg to do it.

You'd think someone would already have made something like this. Has anyone done an internet search to see if such an animal already exists?