https://www.cnet.com/news/netflix-high-quality-audio-makes-shows-and-films-sounds-better/ > To address the issue, the show was streamed at a higher bit rate that sounded closer to the original studio master. This laid the groundwork for Netflix to create its new high-quality audio feature. > High-quality audio not only delivers a higher bit rate but can adapt to the speed of your internet connection by increasing or decreasing that bit rate. Netflix video already does something similar. If you've ever been on a slower connection, you have probably seen video playback at a lower quality until there's enough of a buffer for it to switch to a higher quality version. High-quality audio will do the same and move up and down in quality seamlessly as you watch a show.