Filters As projects become larger in size, calculations will continue to span horizontally across the canvas. Project filters are intended to allow users to narrow the focus of the canvas to various parts of the project. Access the Filters feature in V-A Design. Filter options. Filter options allow you to narrow the focus of the canvas view by any of the following parameters: System Name Receiver Type (Indoor, Outdoor) Receiver Criteria (NC-35, NC-40, etc.) Receiver Name Silencer Tag Library Element Tag Velocity Range Acoustic Tolerance