[derf_]

> For radio links like Bluetooth it's possible to deal with some bit flips without throwing the entire packat away.

Opus was intentionally designed so that the most important bits are in the front of the packet, which can be better protected by your modulation scheme (or simple FEC on the first few bits). See slide 46 of https://people.xiph.org/~tterribe/pubs/lca2009/celt.pdf#page... for some early results on the position-dependence of quality loss due to bit errors.

It is obviously never going to be as robust as G.711, but it is not hopeless, either.