“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


DOCUMENTALES

Cover from the feature documentary Perros del Fin del Mundo

Título: Perros del Fin del Mundo / Fireland Dogs

Director: John Dickinson

País: Argentina

Año: 2018

Mi rol: Compositor / Supervisor musical / Mezclador musical

Cover from the feature documentary Perros del Fin del Mundo

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.

Título: We Are Rivers

Director: Graciela Cassel

País: USA

Año: 2024

Mi rol: 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.

Título: Outside the Valley

Director: Hunter Weeks

País: USA

Año: 2021

Mi rol: Postproducción de audio completa

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.

Título: Cargada de carbohidratos: una cultura que se muere por comer

Director: Lathe Poland

País: USA

Año: 2014

Mi rol: Doblaje al Español / Mezcla

Carb-Loaded

Documentary - USA - 2014

Cargado de carbohidratos: una cultura que muere por comer es una crónica de las cosas que

el escritor y director Lathe Poland se enteró después de que le diagnosticaran

Diabetes tipo 2. Buscó averiguar por qué se enfermó, porque él

no encajaba en la imagen clásica de un adulto con diabetes. Él

Aprendió rápidamente que mucho de lo que sabía sobre alimentación saludable se basaba

sobre mitos o ciencia de hace cincuenta años. En la película, investiga por qué

La cultura gastronómica moderna estadounidense nos está matando. ¿La ventaja? Hay mucho

que se puede hacer!

Título: Off The Sofa: The Amazon

Director: Simon Jaeger

País: Germany

Año: 2024

Mi rol: Compositor - Postproducción de audio completa

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.

Título: Under One Flag

Director: Matthew Fisher

País: USA

Año: 2021

Mi rol: Compositor - Postproducción de audio completa

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.

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