Forked from NeoCat's awesome FSK Serial Generator Script:
https://github.com/NeoCat/FSK-Serial-Generator-in-JavaScript
Hacked to work on iOS Safari with help from the base64-binary.js library by Danguer:
https://github.com/danguer/blog-examples
And iOS Safari compatable AudioContext code learned here:
http://github.com/cteubank/AudioSerial
About SoftModem: http://code.google.com/p/arms22/wiki/SoftModemBreakoutBoard