Blast from the past: dial-up modem sounds
Posted by jpluimers on 2019/12/02
Because fewer and fewer people have used them in real life: this is how geeks communicated even before the internet era.
Below a series of videos with modem sounds. One as recent?! as 2008 when dial-up was still possible in many places. Now it’s a not just a thing from the past, but an area where mankind learned a lot about signal processing, for which the knowledge is still in use today.
- [Wayback/Archive] The Sound of dial-up Internet with dial tones and initial training sequences
- [Wayback/Archive] ALL Old Modem Sounds (300 baud to 56K) demonstrating how a Conexant V.92 based soft-modem could create most modem standard used in North America (Bell 103, V.22(bis), V.32(bis), V.34, V.90, and V.92), corresponding to 300 bps, 2400 bps, 14.4K, 33.6K, and 56K.
- [Wayback/Archive] Dial Up Modem Handshake Sound – Spectrogram which is a preamble to [Wayback/Archive] absorptions: The sound of the dialup, pictured.
- [Wayback/Archive] Sound of the dialup modem explained
Related blog posts:
- This Dutch caught my eye: “Dutch telecom operator KPN has turned off the inbound internet dial-up equipment. It keeps possible to dial the number, as dial-up traffic is now handled by provider xs4all: Nostalgie: KPN zet inbelplatform uit en laat Xs4all inbelverkeer afhandelen – IT Pro – Nieuws – Tweakers.
- The Sounds of Dialup Modems and Related Equipment
Edit 20250318 added [Wayback/Archive] Dial Up Modem Sounds: Telebit Trailblazer Packetized Ensemble Protocol (PEP) – YouTube plus Wayback/Archive links where appropriate.
--jeroen
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