I don't know if I'm the only one who curious about this, but I would also find it helpful if there were examples of what an Iredecci voice sounds like
Hello! Are you on tumblr? I have a blog there where I’ve discussed this and many other bits on world lore. I’d recommend following me there: https://www.tumblr.com/fir-fireweed.
The best way to describe it, is that it sounds like polyphonic overtone singing. Or if you want an easier example, they sound like turians of the Mass Effect games. 😁