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Soundscapes

May 13, 2013 4:05 PM, By Alan Hardiman

How an exhibit came to life with immersive audio.


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“Battle of the Titans,” a dinosaur exhibit staged at the Royal Botanical Gardens in Burlington, Ontario, this past winter featured life-size recreations of a tyrannosaurus rex and triceratops charging toward each other. Behind the scenes the exhibit relied on a TiMax2 Soundhub to create an immersive sonic environment that enveloped visitors in the sounds of the late Cretaceous period, transporting them 70 million years back in time.

Veteran sound designer Gary Hardesty, who created the sound design for the opening and closing ceremonies of the 2008 Beijing Summer Olympics, programmed a 16-channel surround soundscape consisting of more than 300 individual ambiences and effects, all of them true to what is known of the period from the most recent scientific evidence.

The soundscape was reproduced via 36 powered Electro-Voice loudspeakers arrayed around the two-story high atrium of the Camilla and Peter Dalglish Auditorium, the upper level consisting of a 10ft.-wide balcony on all sides, with a stairway descending to the main floor in the center well.

The 4,000-square-foot interactive experience ran from Jan. 26 to April 7 and featured real fossils, stunning graphics, exciting videos, living dioramas, interactive displays, immersive background audio, live plants, and of course, life-size dinosaurs created by Universal Studios’ Jurassic Park theme park designer Hall Train, in association with renowned paleontologist Dr. Phil Manning and his scientific team. “Battle of the Titans” featured 11 kiosks fitted with 26in. Samsung flatpanel displays distributed around the lower floor and balcony. Together they ran more than 90 minutes of video streamed from 8GB USB drives, consisting of interviews, dinosaur animation, computer graphics, and specially filmed wildlife sequences of lions, rhinos, and other exotic species that compare lifestyles of extinct and living animals.

“Given that there are some 300 botanical gardens in North America, many of which are dark in the January-April period when plants are dormant, it’s not surprising that operators are actively on the lookout for exhibits such as this to attract visitors,” says Michael Lofranco, the exhibit’s marketing director. “The tie-in of a dinosaur show with a botanical garden is a natural one, since most, if not all, of the plants from that period are still living all around us, so the flora are familiar, even if the fauna are extinct.”

Hardesty’s mandate was to create that environment. “I chose to build a 3D soundscape that would tell a bit of a story, starting with a Tibetan flute and a low-frequency drone to create a feeling of mystery, and progressing to building the forest, injecting different birds from that era, along with frogs, crickets, and a lot of things that were alive back then to tell the story of the forest evolving, then becoming a bit turbulent and stormy with wind and thunder, before looping back to the flute after about 72 minutes,” he says.

“If you’re on the lower floor, you can hear the water flowing from the dig area known as Hell Creek. The soundscape is so immersive, the forest so deep, that when you turn it off, it feels like the whole room just collapses. That’s when you realize how much TiMax is contributing to that whole environment. It’s very cool,” Hardesty says.

“[After] doing a lot of research and talking to colleagues and friends, I elected to go with the TiMax2 Soundhub, and it proved to be very comprehensive in terms of what I was able to do, and I was very, very excited to use it,” he says.

The Soundhub is expandable in increments of 16 I/O up to 64x64 in a 2RU package. Its unique input-output matrix provides up to 4,096 crosspoints, each of which affords control of both level and delay for precise localization of sound sources through manipulation of Haas-effect binaural perceptual cues.

Hardesty and sound system provider Scott Pollard of Palmer Audio elected to keep it simple. With the Soundhub’s I/O matrix and onboard 8-band parametric EQ rendering a console superfluous, they routed 10 of the Soundhub’s 16 outputs directly to 10 of the loudspeakers on a one-to-one basis. The remaining six outputs were daisy-chained in groups through the remaining 26 cabinets to allow some spreading of the ambient effects. The loudspeaker system was comprised of 21 EV ZXA1 and 15 EV ELX112P two-way self-powered cabinets.



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