In these videos Peter Marks VK2TPM gives a presentation about the new amateur radio digital voice mode FreeDV and interviews David Rowe VK5DGR about Codec2.
Watch FreeDV Codec2 presentation to Amateur Radio NSW Home Brew group.
Watch David Rowe interviewed about Codec2
Download FreeDV from http://freedv.org/
Codec2 http://codec2.org/
David Rowe VK5DGR http://www.rowetel.com/blog/
Peter Marks VK2TPM experiments http://blog.marxy.org/