Thought food

Giant Alphanumeric Nixie Tube available for lots of $ on the 'bay

Sometimes I go to this page and just listen to the default sounds

A couple of 3-dimensional alphabets. Info on the above alphabet. The image below I came across randomly and I can't find any information about it, so let me know.

Another 3D alphabet

CNMAT's experimental spherical speaker

Interactive Acoustic Modeling from Princeton. video