The term "auditor" for hearing does not correspond with the term voyeur for seeing: on the one hand, the person engaged in what has usually been described as perverse activity; on the other, the ordinary hearer or listener, the simple unproblematic activity of listening. Typically, and influentially, Freud, in the Three Essays on the Theory of Sexuality has a fair amount to say on scopophilia — pleasure in seeing — and voyeurism, nothing on whatever the equivalent would be for pleasure and fixation in listening (precisely the word is missing, does not come easily to mind as "voyeurism" does). As against which, one might recall Sade's comment that, for the true libertine, it is "the sensations communicated by the organ of hearing which are the more gratifying and whose impressions are the keenest"¹ (thus his libertines listen to long narratives, construct machines to amplify sound, achieve orgasm on hearing cries). As against which too, perhaps, seen through the door of a London sex-shop close to the offices of Screen, a notice advertising "Films now showing: silent £1, sound £1.50".