Perhaps slightly off-topic, but wondering if this has the functionality or what others on HN would recommend.

I have a friend who enjoys online multi-player games, but she often faces quite a bit of unfriendly remarks when she speaks (CS:GO, I believe it's been an ongoing problem in the community). I'm thinking perhaps an audio program that can alter her voice from female to male would let her game in peace - would anyone on HN have any suggestions/recommendations?