Audio File Extensions
These are the audio file types you will be interacting with.
Extracted music files from "music", "music_patch_1", & "music_patch_2" will be converted to this format if they are to be edited.
OGG files CANNOT be re-injected into DOOM Eternal.
Extracted sound effect & voice over files from "sfx", "sfx_patch_1", "vo_English(US)", etc will be in this format.
OPUS files CAN be re-injected into DOOM Eternal.
Edited music files must be converted into the WAV format before they can be converted into WEM files.
WAV files CANNOT be re-injected into DOOM Eternal as music files, but they CAN as sound effects & voice overs.
After the edited music files have been converted into the WEM format, they CAN be re-injected into DOOM Eternal.
These contain the audio files. They CANNOT be directly modified by a conventional audio editor.
Instead, tools are used to extract individual audio audio files.
These contain the audio resources. They CANNOT be directly modified by a conventional audio editor.
However, Fusion Tools can directly modify PCK files.
If a WEM file has been exported correctly (Vorbis Quality High), they should have "_3F75BDB9" before its WEM extension. You will need to delete the "_3F75BDB9" in the WEM file's name before you can inject it into DOOM Eternal.
See Creating Audio Mods for more information.