Which French director, known for his comedy films and his successful transition to talkies, directed 'Under the Roofs of Paris'?

René Clair was a French film director who made important silent films and then made a successful transition to talkies. 'Under the Roofs of Paris' (Sous les toits de Paris, 1930) is one of his first and most famous talkies, but its style still reflected his experience in silent films.