There are a couple of people I’ve seen on youtube who have made their own laser microphones which I find to be very compelling. The first video uses a photosensor to detect the vibrations from a mock up window(glass pane) while the one below it uses part of this method but changes it to send different kinds of sound to a speaker. Very cool and opens up a lot of possibilities! DIY-ing this seems really fun and could allow me to do different kinds of audio analysis or storytelling in a piece.
I’m really interested in the history of making these devices(war) and how they can be/ are used in more musical ways now.
The last video is describing radios and how interference in them works – not really a project necessarily but still really fascinating. I had a lot of attachment to my own radio as a kid so it’s really nice seeing how they work.