You can download FreeDV 1.0 for Mac from our application library for free. This free Mac application is an intellectual property of David Witten, David Rowe. FreeDV for Mac is categorized as Audio & Video Tools.
From the developer:
FreeDV is a GUI application for Mac that allows any SSB radio to be used for low bit rate digital voice. Speech is compressed down to 1600 bits then modulated onto a 1.25 kHz wide 16QPSK signal which is sent to the Mic input of a SSB radio. On receive, the signal is received by the SSB radio, then demodulated and decoded by FreeDV .
You may want to check out more software for Mac, such as Trapcode Lux, VeescopeHub or Bia2 Radio, which might be similar to FreeDV.