Credits

Codec2 is an open source low bit rate speech codec designed for communications quality speech at 2400 bit/s and below:

http://www.rowetel.com/codec2.html

The OFDM implementation used in c2poc is derived from the q15x25 implementation:

http://www.arrl.org/q15x25

that is encapsulated into this open source library:

http://www.baycom.org/~tom/ham/soundmodem/