This sound is from Blowup (1966)

Blowup is a cult classic movie directed by Michelangelo Antonioni in 1966. This iconic film follows Thomas, a fashion photographer, as he unintentionally captures a murder in one of his photographs. Starring David Hemmings as Thomas, the cast includes Vanessa Redgrave, Sarah Miles, John Castle, and Jane Birkin. Blowup encapsulates the atmosphere of the swinging '60s in London, exploring themes of existentialism and the blurred lines between reality and illusion. The movie's intriguing plot and mesmerizing cinematography have made it a timeless masterpiece. You can immerse yourself in the sounds and visuals of Blowup by playing and downloading it here.