Modem noise spectrogram
See the original posting on Boing Boing
Scotty H created this spectrographic animation of a classic dial-up modem’s startup noise. Here’s a breakdown, by Oona Räisänen, of what each section concerns:

Nerdly News Curated from Interesting Sites
Scotty H created this spectrographic animation of a classic dial-up modem’s startup noise. Here’s a breakdown, by Oona Räisänen, of what each section concerns: