“Film is sound and picture. But for me, sound is at least 50 percent, sometimes more.”
David Lynch, director of Mulholland Drive and Blue Velvet, known for his surreal audiovisual style.
As a sound editor for film, I’ve always believed that the most powerful moments aren’t always seen — they’re felt.
Across decades, I’ve learned to listen between the lines, finding the rhythm of silence and the music of emotion.
That’s where stories come alive.
Walder Martinez
DOCUMENTARIES
Title: Perros del Fin del Mundo / Fireland Dogs
Director: John Dickinson
Country: Argentina
Year: 2018
My role: Composer / Music Supervisor / Music Mixer
Perros del Fin del Mundo
Documentary - Argentina - 2018
What counts is survival.
Dogs turned into a threat are a metaphor for how life evolves, how man breaks a balance, and how in the course of his will, he forgets that nature is a powerful force.
Title: We Are Rivers
Director: Graciela Cassel
Country: USA
Year: 2024
My role: Dialogue Editor / Sound Editor
We Are Rivers
Documentary - USA - 2024
We Are Rivers, directed by Graciela Cassel, is a documentary short that explores the vital role of rivers in our ecosystem. Through stunning visuals and interviews, the film highlights the impact of pollution and climate change on New York’s East River, urging the need for environmental protection.
Title: Outside the Valley
Director: Hunter Weeks
Country: USA
Year: 2021
My role: Full Audio Post-Production
Outside the Valley
Documentary - USA - 2021
Outside the Valley follows J. Ryan and Hunter as they travel to Portugal, Uruguay, New Zealand, and Mexico to learn about startup ecosystems outside of Silicon Valley. Told through the lives of founders who are trying to build great companies, coronavirus strikes and tests everyone’s resolve.
Title: Carb-Loaded: A Culture Dying to Eat
Director: Lathe Poland
Country: USA
Year: 2014
My role: Spanish Dubbing Artist / Re-Recording Mixer
Carb-Loaded
Documentary - USA - 2014
Carb-Loaded: A Culture Dying to Eat is a chronicle of the things it's
writer and director Lathe Poland learned after he was diagnosed with
Type 2 diabetes. He sought to find out why he got sick, because he
didn't fit the classic picture of an adult onset diabetes sufferer. He
quickly learned that much of what he knew about healthy eating was based
on myths or fifty year old science. In the film he searches out why
Americas modern food culture is killing us. The upside? There is a lot
that can be done!
Title: Off The Sofa: The Amazon
Director: Simon Jaeger
Country: Germany
Year: 2024
My role: Composer & Full Audio Post-Production
Off The Sofa: The Amazon
Survival Reality Show - Germany - 2024
Have you ever sat on your sofa, watched a survival show, and thought “I could do that better”? Simon Jaeger from Munich was a Survival Expert… On the Sofa…
That was until he embarked on a crazy extreme expedition into the depths of the Amazon. Six grueling long days and nights surrounded by Jaguars, spider
monkeys, and bullet ants that can paralyze a human body not to mention the
largest snake in the world the deadly anaconda. Lead by Survival Expert Domino Knausenberger, watch Simon get Off the Sofa, swapping his home comforts for the unpredictability of the jungle, thunderstorms, campfires, and wading in piranhas filled swamps.
Title: Under One Flag
Director: Matthew Fisher
Country: USA
Year: 2021
My role: Composer & Full Audio Post-Production
Under One Flag
Animated Documentary - USA - 2021
Under One Flag is an online education project. It tells the story of Filipino World War II veterans and their advocates who, together, fought for decades for their rightful recognition and benefits from the U.S. government. The project features Under One Flag, an in-depth visual story, hours of oral histories, and classroom teaching resources. The Duty To Country project seeks to enshrine the stories and sacrifice of Filipino veterans in American History.
English 
Spanish