Recent content by klaberte

  1. K

    Will Bluetooth audio quality improve?

    Glad you asked! Yes, Bluetooth audio's default Codec, SBC, is lossy. You can decide for yourself: Go to https://btcodecs.valdikss.org.ru/sbc-encoder/ then upload your favorite track, switch Profile 3 to "None" (i.e. no codec, so the original audio) and compare to Profile 1. Profile 1...
  2. K

    A method to improve fidelity for (almost) all Bluetooth audio

    In this article, I describe the default SBC codec common in all Bluetooth audio (A2DP), and how it could easily be made to improve fidelity: https://docs.google.com/document/d/1YPTwFhvo99suyrwkT4Z97so9_xwoOGkpSqgveLpYvYc/edit?usp=sharing One of the important conclusions is that, if the source...
  3. K

    Will Bluetooth audio quality improve?

    My article discusses SBC vs newer codecs. My broad conclusions are: 1. SBC sounds very good (likely impossible for most to ABX vs the original) when you appropriately increase the bitrate. (My article discusses how to do this.) 2. It should be possible to get ROM developers (and possibly...
  4. K

    Audio over Bluetooth: most detailed information about profiles, codecs, and devices...

    Yes, ValdikSS (who wrote your cited article) and I have been in touch and s/he kindly reviewed the article last week. I also credit him in the acknowledgements for being the inspiration for my suggestion to set nrof_subbands to 4. You will find more references to his work and tools in my article.
  5. K

    Improved audio quality on Bluetooth devices without aptX/LDAC

    Sorry to bump an old thread. LDAC is hard to test, as there are no software encoders available. Thus, if you use a hardware receiver, you are testing not just LDAC, but the audio characteristics of the receiver as well. Also, ValdikSS has found that some receivers actually change their EQ for...
  6. K

    Will Bluetooth audio quality improve?

    It certainly could, and we would not even need to buy updated receivers (headphones, speakers, etc.), nor do we have to wait for LC3. https://www.audiosciencereview.com/forum/index.php?threads/audio-over-bluetooth-most-detailed-information-about-profiles-codecs-and-devices.8223/post-326303
  7. K

    Audio over Bluetooth: most detailed information about profiles, codecs, and devices...

    I just happened to have made a study of SBC, how it works, how it can be improved, etc. and wrote the following article. https://docs.google.com/document/d/1YPTwFhvo99suyrwkT4Z97so9_xwoOGkpSqgveLpYvYc/edit?usp=sharing There are several internal parameters that get negotiated at connection...
  8. K

    Bluetooth: LE Audio and Low Complexity Communication Codec (LC3)

    Bluetooth sounds bad if it is configured badly, which most of them are. But if you increase the bitrate appropriately, SQ can be decent. You can try for yourself. https://btcodecs.valdikss.org.ru/sbc-encoder/ With high enough bitrate, even SBC sounds pretty good.
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