Yes, it really turned out to be more challenging than I anticipated. I'll be surprised if anyone can score 5 or more on the insane level. It was really fun learning about DTMF tones, though.
seems like this thing would be pretty easy to automate (aka cheating). Fire up an asterisk box and have it record, decipher, and play back the tones!
Try it! I'd love to see that work. I thought about doing it myself for unit testing.
That seems like an awfully complicated way of doing it, why not use a digital voice recorder (your pc/cellphone) to record each set of beeps and play it back.
Tried it, didn't work. I do have a crappy phone (though the digital recorder is quite good).
I think you could actually build a Twilio app to cheat... if only there were more hours in the day, I'd try it!