Where did this sound effect come from?

I thought it was the original bat phone, but it's not. It's a longer tone, a series of notes, kind of dum diddle dum diddle dum diddle dum (it would be C-B-C-D-C-D-E-D-C-B in terms of pitch). I'm sorry I can't be much more specific than that. I'd love to know where this came from.