This is an implementation of Codec2 for the ESP32 (Arduino). This version is just weekend project, you can make a wifi walkie talkie just by using esp32 dev-board, microphone amplifier and speaker amplifier modules.
At the moment, it is just a lots of spaghetti code. It works and no one knows why and how. I may update, clean, apply style etc, in the future.
You need to have an AMATEUR RADIO LICENCE in order to use.
This library do not have an installer, just copy the codec2 folder to your Arduino library folder.
Codec2 is a low-bitrate speech audio codec (speech coding) that is patent free and open source develop by David Grant Rowe. http://www.rowetel.com/