sentences:  Aware that the film had a considerable following, the restoration team knew that they were under particular pressure to restore the film as accurately as possible.To achieve this, they used Hitchcock's original dubbing notes for guidance of how the director wanted the film to sound in 1958.Harris and Katz sometimes added extra sound effects to camouflage defects in the old soundtrack ("hisses, pops, and bangs"); in particular they added extra seagull cries and a foghorn to the scene at Cypress Point.