this post was submitted on 22 Nov 2025
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The video explains how a single needle can play stereo sound, but in doing so explains how the basic idea works before going into the incredible design to do two channels.
Link is borked because of the ! at the beginning. It’s trying to pull a picture that doesn’t exist
As a general FYI, you can make a clickable YouTube thumbail like this
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Just replace the videoID in the thumbnail and URL.
I tried to duplicate what you have (which works in your example) but it broke it badly, so I left it. One day all the Fediverse will be universal in how it works.