"From the Links Hidden: Login required developers, Links Hidden: Login required is a non-patent encumbered codec designed for interactive usages, such as VoIP, telepresence, and remote jamming, that require very low latency. When they started working on Opus (then known as Links Hidden: Login required ), they used the slogan 'Why can't your telephone sound as good as your stereo?', and they weren't kidding. Now, Links Hidden: Login required demonstrate that Opus's performance against HE-AAC, one of the strongest (but highest-latency) codecs at this bitrate, bests the quality of two of the most popular and respected encoders for the format, on the majority of individual audio samples receiving a higher average score overall. Links Hidden: Login required conducted a Links Hidden: Login required including Opus, aoTuV Vorbis, two HE-AAC encoders, and a 48kbit/sec AAC-LC low anchor. Comparing 30 diverse samples using the highly sensitive Links Hidden: Login required , Opus is running with 22.5ms of total latency but the codec can go as low as 5ms."