What is the latency for something like AAC? How much power does it take to encode and decode? It seems to me like some of the big constraints on codec choice a

What is the latency for something like AAC? How much power does it take to encode and decode? It seems to me like some of the big constraints on codec choice are power, latency and then quality. Maybe “spectral efficiency” too, but I don’t really know. Could be why they are using a high rate lossless codec? Maybe said codec is super efficient to encode on a tiny airpod with a tiny power source? I guess what I’m saying is maybe there are additional constraints specific to this problem domain that aren't a concern for the rest of us? That doesn’t mean it can’t be an unencumbered, open source codec though. It just might mean the “common” ones out there don’t fit the constraints of the system.