When using FreeDV or other digital voice modes, what's the preferred signal report? The software has a single SNR number, but that fluctuates quickly. Since it's a digital mode, you either get the transmission, or you don't, so the RSQ system doesn't seem ideal.
There is no standard preferred signal report for digital voice. At the moment it's best to provide the number, and then explain where you got that number from and perhaps provide additional information as needed so the recipient can understand the meaning of it.
As digital voice codecs advance and as users seek to evaluate them a few key characteristics will stand out as being measurable, and perhaps someone will combine those into a single report and report style.
As it's fairly early on for the codec mentioned, and others, I expect that we'll have to simply report what we hear and see using plain english and work on making a standard.