Everything points to the fac that wave to pcg conversion is probably amatter of audio export between PCM audio files .wave and .pcg audio sample files. This is typically searched by users of old Korg Triton workstations that want to use some modern audio files with it.
Your best option in this case is to use software like Awave Studio for this, because it supports broad range of audio formats.
Updated: January 20, 2023