HackerTube / Video
Dial Up Modem Handshake Sound - Spectrogram
Bitcore

A spectrogram visualization of the sounds in a dial-up modem handshake, with an annotated image explaining each noise. It shows how the handshake's tones map to the negotiation steps.
Linked as a nostalgic and clear way to see what the modem handshake is doing, and as an example of sounds people can recognize.
8 Hacker News mentions · 2014–2024