CN Tower, Toronto

Challenge

The CN Tower presents a unique acoustic challenge: a non-standard vertical building topology with observation decks, restaurants, and public spaces distributed vertically rather than horizontally. Conventional zone mapping and speaker placement strategies designed for horizontal floor plates do not apply. The paging system needed precise zone control and acoustic performance across spaces with dramatically different volumes, ceiling heights, and visitor densities.

Approach

ITS augmented the CN Tower's paging infrastructure with zone designs tailored to the tower's vertical topology. Each zone was treated as a distinct acoustic environment — the observation deck, the glass floor level, the restaurant, the base — with speaker placement and signal processing tuned to the specific dimensions and noise characteristics of each space. Zone control allows independent addressing of each level while maintaining the ability to page the entire structure simultaneously for emergency messaging.

Outcome

The CN Tower operates with augmented paging infrastructure delivering precise zone control and consistent acoustic performance across all public areas, from the base to the observation decks.