celt (low delay audio codec)

CELT is a very low delay audio codec designed for high-quality

communications. Traditional full-bandwidth codecs such as Vorbis and

AAC can offer high quality but they require codec delays of hundreds

of milliseconds, which makes them unsuitable for real-time

interactive applications like teleconferencing. Speech targeted

codecs, such as Speex or G.722, have lower 20-40ms delays but their

speech focus and limited sampling rates restricts their quality,

especially for music.