You can recognize any voice that the game allows you to recognize. If the game tells your character that Joe Genero said something, your character can act as as if they heard Joe Genero say it. This also applies to hearing holoparasites, nuclear operatives, and zombies say things.
Limitations
This should not be interpreted to allow you to bypass any new life rule or memory restrictions. This is onlly relevant for IC channels, your character is not aware of OOC or LOOC chat.