Sound Test for Blackmail
Directed by Alfred HitchcockAlfred Hitchcock makes an experiment in this short film where he uses the sound device for the first time in a motion picture of his own. This is a sound test where the master of suspense and actress Anny Ondra have some humored dialogues, just checking the sound quality designed for Hitchcock's first talkie picture, the classic Blackmail (1929).
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