![]() ![]() Williams demonstrated the difference between these two audio bitrates during a recent listening demo with Variety that used a recording of applause as a sample sound. During testing, Williams’ team discovered that they could effectively dupe expert listeners with 5.1 streams encoded with 640 kpbs. That’s because with 192 kbps, Netflix wasn’t achieving what audio codec engineers call perceptual transparency, a term that describes a level of quality that even expert listeners can’t tell apart from the original master recording. “We knew we could do better,” said Phill Williams, Netflix’s senior software engineer for audio algorithms. The result sounded pretty good on 5.1-capable home theater setups, but there was room for improvement. ![]() Up until then, Netflix had been streaming 5.1 audio with 192 kbps using the Dolby Digital Plus codec. As it turned out, the audio in question could be improved a lot by going back to the mixing board - but once Netflix’s engineers started to look into the issue more broadly, they realized that they could do a lot to improve the overall audio quality of the service. Netflix’s team took the criticism at heart, and immediately tried to figure out what went wrong. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |