The article analyzes YouTube's audio quality by comparing source files with their YouTube-processed versions, focusing on different audio codecs (opus and aac) and sample rates. The study reveals that YouTube's audio processing introduces noticeable quality degradation, with frequency range limitations and signal alterations. Comparisons with BBC iPlayer's audio streaming show that YouTube's audio quality is inferior to professional broadcasting standards.

https://www.audiomisc.co.uk/YouTube/SpotTheDifference.html

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