We just launched a bunch of built-in stock voices as well: this is how they sound: https://twitter.com/andrewmason/status/1303384858249494529?s...
All these voices have been created via our voice cloning pipeline. Something to note: the generated audio is 44.1kHz and super crisp, ready to be useful for voice-overs or editorial corrections. Let me know if you have any questions about the tech. (I am one of the lyrebird founders.)