Audio steganography

i am doing audio steganography in python . i have embedded a data now i want to convert the matrix into wav file again how can i do this process ?

Something that you may want to look at: https://github.com/Xilinx/PYNQ/blob/master/pynq/lib/audio.py
I used to do the same, converting 32-bit integers to 24-bit samples (or the other way around, I don’t recall exactly).