Cave Johnson: Ha! I like your style. You make up your own rules, just like me. Tech sounds that won’t ever come back. What used to be state of the art devices a few decades ago are now totally outdated and are no longer produced.
Here are the characteristic tech sounds which you are unlikely to hear today. Dial-up Modem Handshake The Mac OS “Uh-Oh” Sound. Voices of History - Old Time Radio Shows - OTR. Mario Piano Sheet Music - Overworld / Main Theme. Portal - Still Alive at the Orchestra by blakerobinson. Sounds of CCentury group. Top 100 Speeches of the 20th Century by Rank.