FreeDV modulator

Note: Not all modes may be supported by the underlying codec2 library.

Parameters
(R): Run-time adjustable


 * Operating Mode
 * options: ['1600', '700', 700B, 2400A, 2400B, 800XA, 700C, 700D]


 * Text Message
 * default: GNU Radio


 * Interleave Frames
 * interleave_frames is an integer between 1 and 32, and is only used in the 700D mode. (must be set the same on both transmitter and receiver)


 * Clip
 * Clip reduces the Peak/Average Power Ratio from 12dB to 8dB by clipping. (default: False)


 * Tx BPF
 * enable a bandpass filter (default: True)

Example Flowgraph
This flowgraph can be found at



Source Files

 * C++ files
 * TODO


 * Header files
 * TODO


 * Public header files
 * TODO


 * Block definition
 * TODO