Getting the Right Sound for a Superhero with iZotope’s RX

Christian Buenaventura, dialogue editor for the gritty Netflix series Daredevil, discusses the challenges of capturing audio in NYC.

Published on in Exclusive Interviews

Netflix, the on-demand streaming service, has produced a streak of compelling original programming that pleases both critics and consumers. House of Cards. Orange Is The New Black. And now, Daredevil, the story of a blind, crime-fighting vigilante who protects the Hell's Kitchen neighborhood of Manhattan. 

Contributing to the show’s success is Christian Buenaventura, Sound Editor at Technicolor Sound Services. He’s no stranger to good TV. High-profile credits like Dexter, The Good Wife, and Glee pepper his resume. Christian won a 2013 Emmy Award for his dialogue editing work on American Horror Story, and was nominated — twice! — for True Blood. With his long list of credits and a little help from iZotope’s RX, Christian helped give Daredevil the dark sonic atmosphere that keeps fans coming back each episode.


Seeing the World Through Sound

As a young boy, Daredevil’s main character Matt Murdock loses his sight in an accident. Although he’s left blind, the accident indirectly strengthens his remaining four senses — touch, taste, smell, and in particular his hearing — to superhuman levels. His sensitivity to sound is so advanced that he can actually hear a person’s heartbeat.

Sound is a critical aspect of the show as it helps convey to viewers how Murdock interprets his world sonically rather than visually. “From the very beginning, we knew that sound was going to play a huge part,” explains Buenaventura. “Creating the backgrounds of Hell’s Kitchen, deciding what exactly Matt Murdock hears in the flurry of city chatter, having the rate of the heartbeats that Matt hears hit at exactly the right points. Every part of the editing and mixing process was very meticulous, and we are very proud of how everything turned out.” 

Dialogue editors typically work with audio recorded on location. When the filming takes place in an inherently noisy environment like New York City, they have to deal with a lot more than the typical ticks, pops, and production movement sounds, Buenaventura says. "With its relentless honking, sirens, screeching subway trains, music bumping from cars, not to mention the sound of nine million voices, New York will find a way to make a scene difficult to edit.”


One of his main go-to tools for saving dialogue captured on location, whether it’s the cacophony of New York sidewalks or someplace a little more tranquil, is iZotope’s RX audio repair and enhancement software. “I use RX because it’s a life saver,” he explains. “Brake squeals or back up beeps, no problem. Lavalier mic cutting off or boom mic bump, got it covered.” 

But RX does more than just remove pesky noises—it can actually save otherwise great footage from the cutting-room floor. “There are many scenes that I have cut that would not have been possible unless I had [the] Spectral Repair [feature of RX]." he says.

Buenaventura recalls working on a scene shot in Washington Square Park, where a street performer was drumming and singing in the background, as the actors delivered their lines. Rather than having to use ADR (Automated Dialogue Replacement) to recapture the actors' dialogue, Christian used RX's Spectral Repair and “some fancy editing” to remove the street performer and achieve the right sound.

“Spectral Repair has always helped me in this bind,” he explains. “I could easily see brake squeals to take out over dialogue as well as people talking who aren’t supposed to.” “When I first began using it, I thought it was the future,” he remarks. “RX is so reliable and I know what it’s going to do for me. I use every single plug-in in RX because I know it will get the job done.”

RX to the Rescue

Even with an Emmy under his belt, Buenaventura is constantly seeking out new ways to further his craft. “I believe I’ve been successful because I’m constantly trying to get better at it everyday,” he says. For him, staying relevant in the industry requires a keen knowledge of the latest and greatest audio technology. “It’s important to keep learning and evolving because the technology does so,” he says. “I’m always trying to research and try new plug-ins or try different techniques to get faster and more efficient. When I first began using RX, I thought it was the future, RX is so reliable and I know what it’s going to do for me. I use every single plug-in in RX because I know it will get the job done.”

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