FLUX:: SPAT Revolution Brings Immersive In-Ear Experience to AIR’s Moon Safari 25th Anniversary Tour
FLUX:: SPAT Revolution real-time immersive audio engine delivers studio-like ambient realism across a two-year global run
GLOBAL – AIR’s two-year Moon Safari anniversary tour required its audio team to recreate the sound of the band’s debut album with precision while capturing the acoustic identity of each venue. To meet that goal across 124 shows on five continents, AIR’s in-ear engineer Julien Vouillon integrated FLUX:: SPAT Revolution into a system designed to deliver a detailed, natural binaural experience for the band throughout the tour.
The touring production featured a full performance of Moon Safari in sequence, followed by material from AIR’s later albums. Its artistic goal-reproducing the character of the original studio mixes on stage-led Vouillon and his teammate Florentin Convert to build a complex MIDI-controlled infrastructure that automated instruments and outboard processing. This approach allowed the band to perform with the same instruments used on the album and ensured continuity between programmed elements and live performance.
Vouillon’s work extended beyond recreating recorded detail. A decade earlier, he had experimented with immersive workflows using various interfaces but found that latency and fixed HRTFs limited realism. Before the tour, he re-evaluated the field after meeting immersive operator Julien Pagnier, who demonstrated FLUX:: SPAT Revolution’s binaural capability. “I was really impressed by the sound of the software’s audio engine,” Vouillon said. “The very low latency and the ability to choose the HRTF made SPAT Revolution appear as the optimal choice for this application.”
During rehearsals, once the musical mix approached the album’s character, Vouillon began developing a realistic ambient impression for the performers’ in-ears using SPAT Revolution. From early shows onward, the approach produced an effect that Vouillon described as “breathtakingly realistic.”
“The most important thing in adding an immersive aspect to in-ear monitors is not to create an exaggerated effect, but rather to stay realistic,” he said. “The goal is to make the mix feel completely natural to the brain.”
To accomplish this, Vouillon turned to FLUX:: SPAT Revolution real-time immersive audio engine to place ambience and room capture precisely in virtual space. Integrated with mobile 5.1 surround microphones adapted for concert use, the system blended album-accurate musical detail with spatial depth for in the in-ear environment. FLUX:: SPAT Revolution’s 1 ms latency and customizable HRTF supported a high-quality binaural mix. Vouillon created three independent “rooms” – a main room, a stage room and an applause room that each fed back into the console as stereo-binaural buses for integration with the monitor’s mix.
The result was a binaural environment in which, as he noted, “the presence of the in-ear monitors is no longer felt. The brain, instead, experiences the sensation of being on stage, immersed in the venue’s acoustics.”
The tour covered Europe, North America, South America, Asia and Australia, including venues such as the Odeon of Herodes Atticus in Athens, Sydney Opera House, Hollywood Bowl, Red Rocks and Royal Albert Hall. AIR’s final performance featured a 43-piece orchestra at Le Grand Palais in Paris as part of Collector, a new series presenting concerts in historically significant locations.
Vouillon’s IEM mix is also the foundation of AIR’s first-ever live album, recorded at the Odeon of Herodes Atticus and released earlier this year. “This is literally my live stereo mix, recorded directly from the monitor console and then sent straight for mastering,” Julien said. “This release demonstrates what can be achieved in an IEM setup.”
FLUX:: SPAT Revolution’s real-time engine, low latency and adjustable HRTF worked as the foundation for Vouillon’s monitoring approach, focused on detail and spatial realism. His work allowed AIR to carry the character of Moon Safari into every venue while preserving the sound of the album for a live setting.
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