An audio codec is a technology that compresses and decompresses sound files for easier storage, transmission, and playback. It helps reduce the size of audio files without noticeable loss in quality. Full definition
Huawei is supporting every high quality Bluetooth audio codec via Bluetooth 4.2 including aptX, aptX HD and LDAC. (androidheadlines.com)
Connectivity: For the ultimate in audio fidelity, Android O now also supports high - quality Bluetooth audio codecs such as LDAC codec. (techdroider.com)
We recently uncovered evidence that Bluetooth battery level indicators would be coming to a future version of Android (though not necessarily Android 8.0), and we already know that Bluetooth audio codec support is in the next release. (xda-developers.com)