Soundscape of outdoor mechanical equipment

The soundscape method is a powerful tool for understanding the perception of our acoustical built environment. Soundscape studies can be done in a virtual reality (VR) setting, to aid in the assessment of a building design. In this case, the suitability of several noise control options for a large mechanical system were investigated for a new residence under design and construction on the beach in Jupiter Island, FL. Sound measurements and recordings were made of the existing ambient background sound at the design location, and of the sound of similar installed equipment at other locations. Sound pressure levels were predicted of the operation of the mechanical equipment (generator, chiller modules, pumps and boiler) in the mechanical yard at key receiver locations, including in the owner's property and at neighboring residences. Several equipment noise control options were developed to meet neighbor property line noise limits, and more strict limits for owner expectations of quiet at home. VR recordings were developed which compared the expected mechanical equipment sound with a standard level spoken voice on the property, for review and evaluation by the design team. The results of these studies are presented.