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Does anyone know what codec they're using at 2kbps per voice call?
by patentatt 4y ago
Does anyone know what codec they're using at 2kbps per voice call?
- woodruffw 4y agoAMR_SID claims to be 1.8kbps[1], but I can't imagine it sounds very good. [1]: https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_code...
- killjoywashere 4y agoI'll just leave this here for y'all https://en.wikipedia.org/wiki/Radiotelephony_procedure#Procedure_words https://en.wikipedia.org/wiki/Radiotelephony_procedure#Proce...
- deleted 4y ago[deleted]
- thombat 4y agoAnd the streaming video will be of an empty chessboard in a room with unchanging lighting.
- rini17 4y agoOr AI video generator text prompts.
- RyanHamilton 4y agoYou joke but nvidia is looking at AI compression: https://www.fiercevideo.com/tech/nvidia-swaps-codecs-for-ai-to-improve-video-call-compression https://www.fiercevideo.com/tech/nvidia-swaps-codecs-for-ai-... Which would model the person and "generate" video.
- sandworm101 4y agoJust give up on transmitting video. Just animate the person's profile pic. I'd rather video chat with an animated cat than a human lawyer any day.
- RF_Savage 4y agoHopefully it sounds better than AMBE2+, codec2 and whatever 1st gen Iridium was using at 2400baud.
- wkat4242 4y agoI think it's very hard to get better quality out of that little data :(
- ehsankia 4y agoProbably not this but LyraV2 at 3.2kbps sounds super clean https://opensource.googleblog.com/2022/09/lyra-v2-a-better-faster-and-more-versatile-speech-codec.html https://opensource.googleblog.com/2022/09/lyra-v2-a-better-f...
- codethief 4y agoI'd say it sounds decent but certainly not "super clean".
- wkat4242 4y agoMost sat phones use a kind of AMBE from DVSI