A long winded article (most of the Copper stuff is) to, at the end, complain about Sonos. It seems if one doesn’t accept their new privacy policy, one’s Sonos speakers could stop working.
An semi-interesting bit, pun intended, about twos complement and how it’s necessary for music encoding. Spoiler - it’s needed to represent positive and negative values. The IT personnel among us also know there’s a ones complement that results in both a positive and a negative value for zero.
Plenty of speaker porn from California Audio Show.
For tinkerers - How to build a pipe organ.
And a lot of, as usual, filler.