Feature Request: Add TRC Support to DVMBridge

[faultywarrior]

Repeater access tone is already implemented; so adding TRC function/guard tones shouldn't be awful to add.

[gatekeep]

Because I'm feeling frisky and looking at FR issues...

The RAC tone is a simple single tone injected before user audio as a leader. I guess my question here is, what is the expectation that dvmbridge will interpret function/guard tones, or, and what I assume, that it can generate a function/guard tone set for transmit?

If the second one, we're talking about a two-tone generation; which if they are just two independent sinusoidal tones should be doable. The problem we may run across however, is filtering and other issues with these being transmitted. A lot of comparators and other things that rely on this do really need the wireline audio to be quite clean.