5 ms·

Apple implemented the biggest improvement to Bluetooth audio since 2009

• rdtwo 5y ago
  Is there no setup for unidirectional Bluetooth to improve bandwidth?
  • brokenmachine 5y ago
    I believe AptX is the best quality codec but I don't think that means it's unidirectional. In practice I think you'd still want a little bit of bandwidth going the other way in order to be able to skip tracks/pause/etc.
• lern_too_spel 5y ago
  This seems worse than aptX Voice, which has a 32 kHz sampling rate, and which many devices already support.
  • omegalulw 5y ago
    Apples codec is for the hands free profile (synchronous mode). Are you saying aptX works with that?
    • marmarama 5y ago
      AptX Voice does, yes. But Apple doesn't like paying Qualcomm licensing money.
      • culopatin 5y ago
        If that means not losing support of the device 5 minutes after I bought it because Qualcomm and Apple can’t come to an agreement I rather have lower quality during calls.
• ksec 5y ago
  > These have a fixed data rate of 64 kbit/s (bidirectional). You can see that, at that bitrate, even a sophisticated codec, like AAC, will be limited in quality. It needs a little more explaining. It is 64kbps while keeping it extremely low latency that makes it difficult. AAC-ELD has a coding delay down to 7.5 ms at a sampling rate of 48 kHz. Considering they have to paid for AAC-ELD and EVS, I wonder why they didn't choose EVS over AAC-ELD, or Opus. I think audio codec is mostly a solved problem for music, the next frontier is how do we get sub 5ms latency to sound exceptionally good with 64kbps only.
• egorfine 5y ago
  Can confirm, AirPods Pro deliver 24k audio to the mac now. (A cheapest external lavalier microphone still sounds so much better than that.)