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We had a very early touch tone phone that would silence one of the tone generators if you held down two buttons in the same row/column, so you could get pure-to
by krallja 5y ago
We had a very early touch tone phone that would silence one of the tone generators if you held down two buttons in the same row/column, so you could get pure-tone music out of it by dialing 3+6, 2+5, 1+4, 2+5, 3+6 3+6 3+6…
- greenyoda 5y agoYes, the classic Model 2500[1] touch tone phones would do this. It allowed you to play a more musically pleasing version of "Mary Had a Little Lamb", without the dissonance you got when pressing single keys. This was a side-effect of how the old, mechanical keypads were built. You can see what the keypad looked like in the first minute of this video: https://www.youtube.com/watch?v=JfEUxHIDzPE https://www.youtube.com/watch?v=JfEUxHIDzPE [1] https://en.wikipedia.org/wiki/Model_500_telephone#Model_2500 https://en.wikipedia.org/wiki/Model_500_telephone#Model_2500
- krallja 5y agoThat’s the one! I had no idea it had its own Wikipedia page.