Question: Which film director is also a sound designer, Serge de Poligny or Ric Viers?

Context paragraphs:
You Will Be My Wife: You Will Be My Wife (French: Vous serez ma femme) is a 1932 German comedy film directed by Carl Boese, Serge de Poligny and Heinz Hille and starring Alice Field, Roger Tréville and Lucien Baroux.  It is the French-language version of UFA's "The Cheeky Devil".

The Phantom Baron: The Phantom Baron (French:Le baron fantôme) is a 1943 French drama film directed by Serge de Poligny and starring André Lefaur, Odette Joyeux and Jany Holt.

Ric Viers: Ric Viers (born 1973) is an American sound effects producer.  He has also worked as a sound designer, film director, screenwriter, and author.

The Fatted Calf: The Fatted Calf (French: Le veau gras) is a 1939 French comedy film directed by Serge de Poligny and starring Elvire Popesco, André Lefaur and Armand Bernard.  It is based on a play by Bernard Zimmer.  The film's sets were designed by Jacques Colombier and Robert Gys

Aces of the Turf: Aces of the Turf (French: Les as du turf) is a 1932 French comedy sports film directed by Serge de Poligny and starring Paul Pauley, Alexandre Dréan and Josyane.  It was made at Joinville Studios by the French subsidiary of Paramount Pictures.  In 1935 it was released in the United States with the alternative title of Racetrack Winners.

Paul Charlier: Paul Charlier is an Australian composer and sound designer who works primarily in theatre and film.  He has also worked in radio and was a founding member of the Sydney post-punk band SoliPsiK.  His recent theatre work includes the Sydney Theatre Company productions of "A Streetcar Named Desire" (Sound Designer) and "Uncle Vanya" (Composer and Sound Designer), as well as the Company B productions of "Faith Healer" (Composer) and "The Diary of a Madman" (Sound Designer).  His film credits include "Looking for Alibrandi" (Sound Designer), "Candy" (Composer and Sound Designer), "Paul Kelly - Stories of Me" (Sound Designer) and "Last Ride" (Composer).

Thirst of Men: Thirst of Men (French: La soif des hommes) is a 1950 French historical drama film directed by  Serge de Poligny and starring  Georges Marchal, Dany Robin and Andrée Clément.  It was filmed and set in French Algeria.

The Star of Valencia: The Star of Valencia (German: Der Stern von Valencia ) is a 1933 German drama film directed by Alfred Zeisler and starring Liane Haid, Peter Erkelenz and Ossi Oswalda.  It was made in Mallorca, at the same time as a French-language version "L'étoile de Valencia" directed by Serge de Poligny.

Serge de Poligny: Serge de Poligny (1903–1983) was a French screenwriter and film director.

Return to Paradise (1935 film): Return to Paradise (French: Retour au paradis) is a 1935 French film directed by Serge de Poligny and starring Claude Dauphin, Mary Morgan and Marcel André.  The film's sets were designed by Pierre Schild.

Supporting paragraphs: Serge de Poligny Ric Viers
Answer: Ric Viers