The problem is processing power. Encoding of anything takes a lot of battery power, so the complexity must be kept at a minimum. That said there is a successor

The problem is processing power. Encoding of anything takes a lot of battery power, so the complexity must be kept at a minimum. That said there is a successor called LC3 [1], but hardware support for it has been lacking as it's a relatively fresh standard. [1] https://en.wikipedia.org/wiki/LC3_(codec) https://en.wikipedia.org/wiki/LC3_(codec)