Custom enemies sound with wrong pitch in prdoom

[Deadwing]

For some reason, when I add custom monsters sound, it gets with the wrong pitch on prdoom (while working fine on zdoom, for example).

 

Do you guys have any idea why? I already change the custom sound files to 8 bits, mono and sample rate 11,025

 

Thanks!

[Deadwing]

Ah, i got it, I needed to convert the wav to doom sound format in slade