Honestly, I don’t actually answer the question in the video. I give some reasons why some engineers say it’s 60 kHz – but that’s about it. What I do cover is Aliasing spurred on by a very interesting question about being the hear the difference between Sine Waves and Square Waves. Sorry for all the “click-baity” title but there isn’t a way to present this nerdy topic in a traditional way. Here’s the 7kHz demo I promised:
