Hey everyone, a friend of mine provided the voice for a new utau of mine. Her samples sound fine when I play then but when I open up the voicebank some of the samples sound gravelly for some reason and I'm not sure what it could be. I generated an oto with OREMO for the voicebank but I don't think think the oto is what's causing the gravelly sound. Or maybe it is, I'm not sure. Or if it's the quality of the recordings Does anyone know what might be causing this?