Dial Up Modem Handshake Sound - Spectrogram

0:00 Dial Tone (higher (leftmost) values are the receiving modem, lower are sending modem) 0:07 “Hello, I am a modem. Are you?“ “Yes - I am “ “Okay then let’s use something beyond these basic tones“ ”sure“ 0:11 this tone turnd off echo suppression, which could corrupt data “I’m going to say 6 times what rate and power I can accomplish“ “Okay, I will say three times what rate I can. And we’ll see what match up“ 0:14 “Let’s test the line, and switch into full data mode“ “Sounds good, I will demonstrate a random max data flow to show capacity.“ The click at the end is the signal to switch to full data mode 0:16 “I CAN SCREAM THIS LOUD, AND IT SOUNDS LIKE THIS“ “I CAN SCREAM THIS LOUD MYSELF, AND IT SOUNDS LIKE THIS“ (now they can scream together and simultaneously know what eachother sounds like) 0:23 that very small spike/click is when you stop hearing it. That’s what the click would signal Both: Authentication complete. Full data floodgates opening Both: Screaming but they can now understand the other as they scream.