Welcome to the Siftone repo !
Siftone is a sifteo communication system to send sound messages to a phone (or a computer). Here are the steps to use it:
download the Sifteo SDK: http://developers.sifteo.com
move this repo in the example folder and
start the sifteo cubes and execute:
make run# to run the app in the simulator, or...
make install# to install it in the sifteo base.
To try it with a smartphone, here are 2 apps that work:
*Warning: the iPhone app doesn't work with the default speed, you need a digit period at least twice a long. See the variable called "durationSec" here: https://github.com/honnet/siftone/blob/master/siftone.h#L49
PS: a demo is available here: http://youtu.be/jnJJuw-4oGU