The VG Resource

So I was downloaded PSound and scanned Yakuza(US version/English Dub)for the ps2.
I played some clips and while the menu SFX and SOME voice clips were fine, some voice clips sound SUPER quick and high pitched as well as the rare low pitch sounds. I haven't exported the files yet.
Is it PSound or the ISO I used?
BTW I'm new to this....

You got the sample rate wrong for some files. There's an option to change it in PSound. Try setting it to 16000 or 11025.

Yea, as the user above said it's the sample rate if you change it the voices will either get deeper or lighter. Using that you can kind of tell when the voices become perfect.