3 ms·
For audio, you don't want to send a wav file over the line, as it's incredibly wasteful. Once it's reasonably encoded, you necessarily end up with a lower entro
by sdenton4 7y ago
For audio, you don't want to send a wav file over the line, as it's incredibly wasteful. Once it's reasonably encoded, you necessarily end up with a lower entropy steam... So should still have some version of "solid blocks of color", especially for silence. (Exact details depend on the codec, though.)
- barrkel 7y agoLossy compression reduces entropy, I'd expect fewer repeats and more of what looks like random data in any compression worth its salt. Thomas also mentioned AAC, not PCM. I agree on the silence, but it would come up as smaller packets, not repeated packets, IMO. And then we're back to timing analysis of speech.
- killjoywashere 7y ago> Lossy compression reduces entropy, I'd expect fewer repeats and more of what looks like random data in any compression worth its salt. Um, so, just to make sure I understand you, you're implying that lossy compression is not worth its salt? Because you will surely have more repeats in a lower entropy space.
- tptacek 7y agoYou get essentially no repeats (collisions, more precisely) in the AAC streams I played with. Some block boundary headers; that's it.
- tptacek 7y agoI'm not sending a WAV file (or modeling that); I'm AAC-encoding.
- opusrules 7y agoOpus is probably the right codec for some things. I've heard good things about it.