how do i actually use it to decode a wav file

[zglozman]

No description provided.

[pavel-demin]

This is a modified version to be used as a part of the FT8 application for the Red Pitaya board. It works with .c2 files (complex 32-bit floating-point data at 4000 samples per second). It doesn't work with .wav files.

[wgaylord]

Could this be used with other SDRs? (For example a LimeSDR which also features a FPGA that can pre-process the IQ data.) As it would be interesting to use my LimeSDR Mini to capture and report FT8 on 20m thru 10m

[pavel-demin]

Could this be used with other SDRs?

Yes, if SDR can produce complex 32-bit floating-point data at 4000 samples per second.