The sound of the dialup, pictured

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Anakha56
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The sound of the dialup, pictured

Post by Anakha56 »

http://windytan.blogspot.fi/2012/11/the ... d.html?m=1
The sound of the dialup, pictured

If you ever connected to the Internet before the 2000s, you probably remember that it made a peculiar sound. But despite becoming so familiar, it remained a mystery for most of us. What do these sounds mean?

As many already know, what you're hearing is often called a handshake, the start of a telephone conversation between two modems. The modems are trying to find a common language and determine the weaknesses of the telephone channel originally meant for human speech.

Below is a spectrogram of the handshake audio. I've labeled some signals according to which party transmitted them, and also put a concise explanation below.

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The full picture is actually quite cool to see, follow the link for it.
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Re: The sound of the dialup, pictured

Post by ryanrich »

Very cool. Aah the bad old days.
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Tribble
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Re: The sound of the dialup, pictured

Post by Tribble »

Sends shivers down my spine - and not in a good way either
Image
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