Vibrations and how they get to your ears.
Noise for airports is a blog about culture, sound, music, and technology.
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Updated (sometimes) by Nick Seaver.

As usual, Synthgear does the extra legwork to find interesting extra details. Building on that record groove post, the picture above shows the pits on the surface of a CD. More on the synthgear post at the via link below.
(via Synthgear)
A fun little video by the band Invisible that shows off some of their novelty instruments. The use of physical elements as sequencers is great, especially the rotating pegboard mandala.
Reminiscent of work by Trimpin and Tim Hawkinson.
(via Create Digital Music)