[Tech] A short history of buzzers

Boxes and Arrows on sound design. The best part of the paper is about the history of buzzers.

There were many innovations in electronic sound during the early 20th century, but until the 1950s it was impractical for any product that wasn’t a radio to produce an amplified, electronically generated sound. Reproducing even the simplest electronic tone required bulky and expensive vacuum tubes, transformers, and speakers.

We also learn that "current research is focused on understanding people’s assumptions about what their environment ought to sound like". That kind of research is funny!