This is going to sound weird but how did you do the voice bleeps?
Viewing post in The Many Deaths of Lily Kosen comments
Ren'Py has a small example of how to do a character callback, which plays the sound: https://www.renpy.org/doc/html/character_callbacks.html
For the voice bleeps themselves, I took some sounds from dmochas' text bleeps pack: https://dmochas-assets.itch.io/dmochas-bleeps-pack