Sound File Extensions
These are the sound file types you will be interacting with.
.ogg
Extracted music files from "music" and "music_patch_1" will be converted to this format if they are to be edited.
OGG files CANNOT be re-injected into DOOM Eternal.
Example:cultist_base_music_main_heavy_0_id#156134790.ogg
.opus
Extracted sound effects & 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.
Example:ammo_bfg_id#373311939.opus
.wav
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.
Example:cultist_base_music_main_heavy_0_id#156134790.wav
.wem
After the edited music files have been converted into the WEM format, they CAN be re-injected into DOOM Eternal.
Example:cultist_base_music_main_heavy_0_id#156134790.wem
.snd
This is the file type that DOOM Eternal uses to store all of the game's audio.
It CANNOT be directly modified by a conventional audio editor.
Example:music.snd
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 Sound Mods for more information.