4 points | by damiaozi 6 months ago ago
5 comments
Any sort of system where you have an band limited audio channel and need signalling is going to end up using tones. DTMF is a lot more robust, but single frequencies work too. See also https://en.wikipedia.org/wiki/Quindar_tones
Oooooh... so that's why that hacker magazine is called 2600. I honestly didn't know.
Atari 2600?
https://en.m.wikipedia.org/wiki/2600:_The_Hacker_Quarterly
Any sort of system where you have an band limited audio channel and need signalling is going to end up using tones. DTMF is a lot more robust, but single frequencies work too. See also https://en.wikipedia.org/wiki/Quindar_tones
Oooooh... so that's why that hacker magazine is called 2600. I honestly didn't know.
Atari 2600?
https://en.m.wikipedia.org/wiki/2600:_The_Hacker_Quarterly