There are really good /wired/ noise cancelling headphones on the market. Including in-ear ones. I love my Airpods Pro, but they are nowhere near as good as wired ones. So I'd look into those instead. (perhaps a second hand pair and sell the airpods ;)
From a electrical perspective: the airpods have 2 small metal strips at the bottom. Improvising a little adapater should be straightforward. Main question is what voltage does it take and if the airpods themselves have built-in over-charge protection. (charging at 4v should prevent over-charging)
The Sony wh1000xm4 can function passively (minijack connection) and the noise absorption happening just because they cover your ears is sometimes enough. When you switch them on it’s another world.
True, I own those, but when switched off it's not ANC. Like OP, I'm interested in seeing if something can match ANC, like in the AirPods Pro, but without a battery at all.
Lot of iems can reduce sounds quite a lot, especially if you have music or white noise going on. And some are pretty cheap.
https://drop.com/buy/blon-bl-03-iem
Heidelbergcement | Frontend, Backend, Devops, UX & Data Engineers | Onsite and Remote | Heidelberg, Germany & Brno, CZ
HeidelbergCement is one of the biggest concrete, cement and aggregates businesses in the world. Do you like UX-driven applications and construction machinery, then come join us. We are hiring both juniors and seniors. Our stack is React Native, .net, python, Openshift, Graphml, Azure, NATS, postgresql, etc
Heidelbergcement | Frontend, Backend, Devops, UX & Data Engineers | Onsite and Remote | Heidelberg, Germany & Brno, CZ
HeidelbergCement is one of the biggest concrete, cement and aggregates business in the world. Do you like UX-driven applications and construction machinery, then come join us. We are hiring both juniors and seniors. Our stack is React Native, .net, OKD, graphml, Azure, NATS, postgresql, etc