There is no issue for the female voice, since Google Translate offers a very good Japanese text-to-speech. The issue comes with male voices. Because as far as I am concerned, there is one female voice, one good male voice and one unlawful voice.
I can dig around the net in search for the proper voice over from military games and more serious anime titles rolling around it, then deliver it to someone who can cut and sample those. I have several sources (and friends) among the Japanese part of the WWW.
