APTX

## linux
- https://medium.com/@multi.flexi/use-aptx-on-linux-3f3c4d597dcd
- https://blog.shanock.com/compiling-pulseaudio-aptx-support-on-debian-10/
- https://github.com/lagerimsi-ds/debian-buster_bluetooth_aptX-LDAC/
- https://packages.debian.org/bullseye/libopenaptx-dev
- https://github.com/EHfive/pulseaudio-modules-bt
- https://github.com/EHfive/pulseaudio-modules-bt/wiki/Packages#ubuntu-1804-1810-1904
### ubuntu
- https://askubuntu.com/questions/1071469/how-to-enable-aptx-for-bluetooth-devices

## apple
- https://www.cnet.com/tech/mobile/what-is-apple-w1-bluetooth-chip-headphones-explained/