Walt Martin

Oscar-nominated sound mixer -- via the Hollywood Reporter. Best known for his late-period Eastwood work, he earned his way to the position and how. He are some of the films he worked on prior: "Cavegirl," "Sorority House Massacre," "Pass the Ammo," "Gatorbait II: Cajun Justice," "Dead Heat," "Grizzy Adams and the Legend of Dark Mountain," and the immortal "Dead Man on Campus." I wold have loved to have taped his memoirs. He did it all!

http://www.hollywoodreporter.com/behind-screen/jersey-boys-why-clint-eastwood-713637