Martin OmniLine on track at Sydney Central
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The Country Trains Concourse, measuring 110m x 60m x 10m, and with a challenging RT60 time of 5.5 seconds in the mid-band, has long defied attempts to get intelligible announcements heard by commuters. Over the years many brands have successively tried and failed to tame the inherent reverberation caused by a combination of terrazzo floors, sandstone and plate glass walls and a high arched steel roof.
Last year Glenn Leembruggen, principal of Acoustic Directions, became the latest specialist to do battle with the acoustically hostile environment.
Since acoustic treatment of the inside of the roof was ruled out as being financially untenable, two members of the Acou