Those don't come into play here though. The problem with mic quality with Bluetooth is that we're still using the old headset profile for bidirectional audio. T

Those don't come into play here though. The problem with mic quality with Bluetooth is that we're still using the old headset profile for bidirectional audio. That means bidirectional Bluetooth audio maxes out at a sample rate of 16kHz and bitrate of 64kbit/s, with an ancient compression codec at that. I don't understand why nobody has fixed that. Even Apple, known to extend the Bluetooth spec to improve UX, seems to use the HSP for bidirectional audio between a Mac or iPhone and AirPods. I don't get it. Even if you kept the 64kbit/s bandwidth but switched to AAC you'd get a significant audio quality improvement since you could at least represent sound over 8kHz.