David Rowe VK5DGR and Rick Barnich KA8BMA have been working on SmartMic, an embedded hardware product that allows you to run FreeDV without a PC. Just plug it into your SSB or FM radio, and you now have Digital Voice (DV)
The whole design is open hardware (TAPR license). It will run an embedded version of FreeDV which is also 100% open source.
Based on a STM32F4 micro-controller, SmartMic has a built in microphone, speaker amplifier, and transformer isolated interfaces to your radio. It’s just 80 x 100mm, and can be held in you hand and used like a regular PTT microphone, or sit near your radio in a small box form factor. SmartMic will be in production later in 2014 and will retail for US$195.
Read about SmartMic - http://www.rowetel.com/blog/?p=3125
Codec 2 - http://www.rowetel.com/blog/?page_id=452
FreeDV: Digital Voice for HF - http://freedv.org/tiki-index.php
Join the FreeDV Codec2 email list - https://lists.sourceforge.net/lists/listinfo/freetel-codec2