Guide to Oscar: Best Sound Mixing

The award for Best Sound Mixing has been given out since the 3rd Academy Awards and honour the technicians who create the balance of sounds in a film, creating a sonic picture.

This year's nominees:

David Parker, Michael Semanick, Ren Klyce, and Bo Persson, The Girl with the Dragon Tattoo

7th nomination for Parker. Previously won for The Bourne Ultimatum and The English Patient, and nominated for The Social Network, The Curious Case of Benjamin Button, The Pirates of the Caribbean: The Curse of the Black Pearl and Never Cry Wolf.

9th nomination for Semanick. Previously won for King Kong and The Lord of the Rings: The Return of the King, and nominated for The Social Network, The Curious Case of Benjamin Button, Wall-E, Ratatouille, The Lord of the Rings: The Two Towers and The Lord of the Rings: The Fellowship of the Ring

3rd nomination for Sound Mixing for Kylce. Previously nominated for The Social Network and The Curious Case of Benjamin Button.

First nomination for Persson.

Tom Fleischman and John Midgley, Hugo

5th nomination for Fleischman. Previously nominated for The Aviator, Gangs of New York, The Silence of the Lambs and Reds.

3rd nomination for Midgley. Previously nominated for The King's Speech and Star Wars: Episode 1 - The Phantom Menace.

Deb Adair, Ron Bochar, David Giammarco and Ed Novick, Moneyball

First nomination for Adair and Bochar.

2nd nomination for Giammarco. Previously nominated for 3:10 to Yuma.

4th nomination for Novick. Previously won for Inception, and nominated for The Dark Knight and Spider-Man.

Greg P. Russell, Gary Summers, Jeffrey J. Haboush, and Peter J. Devlin, Transformers: Dark of the Moon

15th nomination for Russell. Previously nominated for Salt, Transformers: Revenge of the Fallen, Transformers, Apocalypto, Memoirs of a Geisha, Spider-Man 2, Spider-Man, Pearl Harbor, The Patriot, Armageddon, The Mask of Zorro, Con Air, The Rock, and Black Rain.

10th nomination for Summers. Previously won for Saving Private Ryan, Titanic, Jurassic Park and Terminator 2: Judgment Day, and nominated for Avatar, Transformers: Revenge of the Fallen, Backdraft, Indiana Jones and the Last Crusade and Star Wars: Episode VI - Return of the Jedi.

3rd nomination for Haboush. Previously nominated for Salt and Spider-Man 2.

4th nomination for Devlin. Previously nominated for Star Trek, Transformers and Pearl Harbor.

Gart Rydstrom, Andy Nelson, Tom Johnson, and Stuart Wilson, War Horse

7th nomiation for Rydstrom for Sound Mixing. Previously won for Saving Private Ryan, Titanic, Jurassic Park and Terminator 2: Judgment Day, and nominated for Star Wars: Episode 1 - The Phantom Menace and Backdraft.

16th nomination for Nelson. Previously won for Saving Private Ryan, and nominated for Avator, Star Trek, Blood Diamond, War of the Worlds, The Last Samurai, Seabiscuit, Moulin Rouge!, The Insider, The Thin Red Line, L.A. Confidential, Evita, Schindler's List and Gorillas in the Mist.

8th nomination for Johnson. Previously won for Titanic and Terminator 2: Judgment Day, and nominated for The Polar Express, Cast Away, Star Wars: Episode 1 - The Phantom Menace, Contact and Forrest Gump.

First nomination for Wilson.