I stumbled upon this Youtube channel, which has some nice educational videos about digital audio and stuff: Akash Murthy (https://www.youtube.com/channel/UCb_NEjjKOXV9pilaSOjlkZA/videos)
Feel free to post other videos/channels that could be interesting to the HA audience.
Audio gear reviews and educational content channels:
Audio Science Review (https://www.youtube.com/channel/UCWp1NY1KXGwcOh1RxKp_-FA/videos)
Julian Krause (https://www.youtube.com/c/JulianKrause/videos)
A couple of videos about the MQA format (https://en.wikipedia.org/wiki/Master_Quality_Authenticated) and Tidal:
I published music on Tidal to test MQA - MQA Review (https://www.youtube.com/watch?v=pRjsu9-Vznc)
MQA Deep Dive Part 2 - MQA's Response (https://www.youtube.com/watch?v=NHkqWZ9jzA0)
A channel with videos about DSP/effects for music production:
Dan Worrall (https://www.youtube.com/c/DanWorrall/videos)
Gotta include these classics too:
Ethan Winer's Audio Myths Workshop (https://www.youtube.com/watch?v=BYTlN6wjcvQ)
A Digital Media Primer For Geeks by Christopher "Monty" Montgomery and Xiph.org (https://www.youtube.com/watch?v=FG9jemV1T7I)
D/A and A/D | Digital Show and Tell (Monty Montgomery @ xiph.org) (https://www.youtube.com/watch?v=cIQ9IXSUzuM)
But what is the Fourier Transform? A visual introduction (https://www.youtube.com/watch?v=spUNpyF58BY)
The more general uncertainty principle (https://www.youtube.com/watch?v=MBnnXbOM5S4)
But what is a Fourier series? From heat flow to drawing with circles (https://www.youtube.com/watch?v=r6sGWTCMz2k)
DSP Lectures (https://www.youtube.com/watch?v=hVOA8VtKLgk&list=PLuh62Q4Sv7BUSzx5Jr8Wrxxn-U10qG1et) by Rich Radke
I have been working with cassette tapes for the past couple of days.
I saw this audio blog. Lots of useful measurements.
No videos but still very useful.