What was Alfred Hitchcock's first sound film?

Alfred Hitchcock’s first film with sound was Blackmail (1929).

He actually filmed two versions, sound and silent.

In the sound version, the German star Ann Ondra’s voice was supplied by English actress Joan Barry.

What was Alfred Hitchcock's first film in color? Rope (1948) was Alfred Hitchcock's first film in color.
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How many directing Oscars did Alfred Hitchcock win? Alfred Hitchcock did not win any directing Oscars.

What was Alfred Hitchcock’s first sound film?