I keep hearing some very subtle processing on David Hyde Pierce's voice for KLDR, even though Anthony Daniel's C-3PO is completely unprocessed. Of course, Threepio is a protocol droid, with the expensive, top-of-the-line translator unit; Kildare is a medical droid, and just has has stock vocabulator.

Besides, Kildare's entire character arc has become "Pinocchio gets dragged kicking and screaming into Becoming A Real Boy." When I role-play error messages for a character whose gestating free will keeps conflicting with his programed behavioral constraints, a slightly tinny overtone to his voice seems entirely appropriate.