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WPI Professor Is The Voice Of The Incredible Hulk

Tuesday, October 29, 2013


He may not look green here, but he takes his voice all the way to Hulk-dom: WPI professor Keith Zizza makes all kinds of noises for video games. Photo: WPI.

Worcester Polytechnic Institute professor Keith Zizza has mastered the art of mixing work and play. In addition to his position as a professor of practice in the school's Interactive Media & Game Development program, he served as the audio lead for Marvel Puzzle Quest, a puzzle/action game app in which he developed hundreds of sound effects for the X-Men, the Avengers, and other heroes and villains, as well as providing the voice for the legendary Incredible Hulk.

"It was truly a blast to create sounds for the X-Men, Avengers, Dr. Doom, Venom, and a host of other characters in the Marvel Universe," said Zizza, now in his third year as professor of practice at WPI. "I was blown away. As a kid I read a lot of comic books and became steeped in the whole mythical lore. It's really exciting."

Marvel Puzzle Quest calls for matching three or more same-colored gems on the game board to power up your assembly of Marvel heroes while fighting off villains, who are also taking gems from the board to attack your heroes.

An unforgettable experience

Zizza's road to being tapped for the project comes from networking contacts, as he's spent more than 20 years working in the digital audio industry. He learned of the opportunity through Demiurge Studios, an independent video game development house in Cambridge, MA, which was working with Marvel to develop the app.

To create the sound effects, Zizza, who specializes in game audio at WPI, took audio samples and put them into a computer. He then created and set up combinations of sounds to make them more tactile and distinctive, and also to hear how they interact with one another in the game.

For example, he might find the raw sound effect of a hammer strike and then "sweeten it" by adding sounds underneath the original one for a more exaggerated, interesting texture. "There are all kinds of little tricks that we do," he said.

For Zizza, one of the most exciting moments of the project was serving as the voice of the Incredible Hulk. How did he come to voice the green machine? As it turns out, Zizza he couldn’t find "any good grunts" in his sound effects library. "So I took some pitch-shifting software and manipulated my voice down, and altered some of the frequencies to become the Hulk," he said. "It was quite an experience."

Zizza said working on the project enabled him to see the dynamic of how people work together as a development group. "This is the part you don't hear people always talking about—seeing how people work together is just as important," said Zizza. "The work collaboration is often overlooked."

Paying it forward

Zizza said his students see benefits from this project, as well. "I maintain my standing in game development by being a consultant on these types of projects, and I’m able to bring back new ideas, skills, and techniques to my students," he said. "With our seven-week terms, in many cases we have to retool the lecture again in the lab because the tools and the techniques have changed."

The Interactive Media and Game Development Program at WPI provides an education in the art, technology, and design principles of creating computer games and other forms of immersive, engaging digital media applications. Mark Claypool, director of WPI's Interactive Media & Game Development program, said Zizza’s efforts shine a spotlight on the important work done by professors of practice at WPI.

"As a professor of practice, Keith Zizza is really at the intersection of academics and industry for teaching aspiring game students," said Claypool. "Professors of Practice at WPI are supported and encouraged to continue to work in the field, as Keith does. This empowers him to bring his considerable talents to bear in real-world projects."


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