Ah, yes, I remember that Bose feature, I had a Bose BT speaker a few years ago (actually it's still here somewhere, but I haven't used it in a while). But I don't think it's a synthesized voice - the German version has a distinctly disappointed sound when it has to inform you that something has disconnected. Good to know that the headphones have that too (as a "con" argument for getting QC headphones).