Re:MLow: Meta's low bitrate audio codec
by lxgr on Thursday June 13, 2024 @02:14PM
(#40672772)
> the rationale behind it was actually sourced in the fact that most SIP was done on LANs and inter-campus WAN which had generally high bitrate connectivity and low latency
In addition to that, early VoIP applications mostly used uncompressed G.711 audio, both for interoperability with circuit switched networks and because efficient voice compression codecs weren't yet available royalty-free.
G.711 is 64 kbps, so 12 kbps of overhead are less than 25% – not much point in cutting that down to, say, 10% at the expense of doubling effective latency in a LAN use case.
In addition to that, early VoIP applications mostly used uncompressed G.711 audio, both for interoperability with circuit switched networks and because efficient voice compression codecs weren't yet available royalty-free.
G.711 is 64 kbps, so 12 kbps of overhead are less than 25% – not much point in cutting that down to, say, 10% at the expense of doubling effective latency in a LAN use case.