4 points | by damiaozi 2 days ago ago
3 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?
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?