Gareth Fry's TiMax Spatialization for Culture Mile's Tunnel Visions: Array in Beech Street TunnelPart of this year's Barbican OpenFest saw a major new Culture Mile light and sound installation take place in the Beech Street tunnel, opposite Barbican Underground. Culture Mile presented Tunnel Visions: Array which transformed the tunnel into an audio-visual performance space combining cutting-edge projection and sound technology with the Barbican's distinctive brutalist architecture. Created by Tony Award-winning artists 59 Productions led by director Richard Slaney, co-produced with the Barbican, and with music by composer/conductor Esa-Pekka Salonen, Tony and Olivier Award-winning sound designer Gareth Fry was commissioned to create a multi-channel spatial sound design for the immersive multimedia art project, using TiMax SoundHub-S64 spatial audio matrix and playback engine. TiMax directed the audio playback of 30 channels of audio stems and effects tracks from its on-board playback engine, including SMPTE timecode, making for quick and complex rendering of spatial pan effects, multitrack mix automation, and precise synchronization with visual content. TiMax input parametric EQ proved invaluable for source sweetening of the multitrack audio stems derived from raw live microphone recordings of the composition piece. Salonen's "Karawane" -- written in 2014 -- was previously recorded by the BBC Symphony Orchestra and Chorus in concert at the Barbican Hall as part of a BBC Total Immersion Day. Using a dedicated SMPTE timecode track striped onto its internal SSD drive, TiMax controlled and synchronized a stack of disguise video-mapping media servers. Forty projectors mounted on speaker towers distributed down the tunnel were arranged in a crossfire configuration to video-map every wall and ceiling surface. The end result was a single, vast 3D screen with abstract and dynamically-animated video art, synchronized to the music and TiMax immersive spatial events. The show control versatility of TiMax added a major advantage to developing the timings of the complex project. By instantly auto-locating to any point within the 30-minute orchestra and choir composition then promptly cueing the disguise media servers directly, TiMax greatly facilitated the coordination of events during rehearsal and for last-minute video edits. The full 70m length of the Beech Street Tunnel was covered by a distributed system of 40 individual Meyer Sound UPJ active cabinets and 20 sub bass units. Individual outputs from TiMax were networked to these on a redundant Dante network then connected via four satellite Yamaha RIO32 breakout boxes. The loudspeakers were positioned facing the walls, pointing away from the audience, with the audio bounced off specially designed sound reflector panels. With the roving audience coming to within a couple of meters of the projection towers, the panels provided a much-needed diffusion of the sound by softening on-axis response, creating a more comfortable and immersive audience experience. The eight-band parametric output EQ from TiMax helped to tune out any artefacts arising from this slight divergence from manufacturers recommended modus operandi for their speaker products. The TiMax system was implemented and programmed in pre-production and on-site at the Barbican Beech Street tunnel by Out Board's Robin Whittaker, as Gareth Fry was committed to tech rehearsals for the Broadway opening of Harry Potter and the Cursed Child. Fry was reported as saying he'd heard great things about the outcome. Director, 59 Productions' Slaney, sums up, "TiMax created a fantastic audio experience for the thousands of patrons that visited Array during this year's OpenFest, enabling the audience to fully immerse themselves in this unique, specially commissioned recording of Esa-Pekka Salonen's Karawane. The resultant audio output was truly breath-taking, which made for an extraordinary audio experience that really placed the audience within sound world of the BBC Symphony Orchestra and Chorus." 
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