3 ms·
If you can whistle two tones simultaneously (the D in DTMF means dual), I'd love to hear it.
by dmd 4y ago
If you can whistle two tones simultaneously (the D in DTMF means dual), I'd love to hear it.
- Someone 4y agohttps://youtu.be/jAG3fQpeZtU https://youtu.be/jAG3fQpeZtU (not me)