The research examined how gamers reacted to female versus male voices in an online game. Using statements designed to be neutral and inoffensive, female voices were found to receive considerably more negative reactions, resulting in three times more negative comments than male voices.

This is a massive problem and isn't somehow equally terrible to the idea that harassment will happen towards anyone based on what others can discern when they hear you. Women's voices are targeted in a way other statistical data is not.

As for voice changer information, I found some with a cursory google search, but I realized that wasn't the point I was making, it was information you're interested in, and you're welcome to find that. It's equally damning to what I've said.

ETA; I don't think you are. If you're a woman, you should probably disclose in your post challenging people to use a voice modulator to sound like a woman. Because it reads like a man posting it as an interesting challenge, and not a woman challenging men.