This needs to be more widely shouted, Opus derives from CELT which was primarily focused on low latency audio encoding (which mp3 really sucks at) and it's the

This needs to be more widely shouted, Opus derives from CELT which was primarily focused on low latency audio encoding (which mp3 really sucks at) and it's the defacto standard for VoIP. Although for professional applications like wireless companies will use their own proprietary codecs.