Methods and systems for label-free multiple analyte sensing, biosensing and diagnostic assay chips consisting of an array of photonic crystal microcavities along a single photonic crystal waveguide are disclosed. In a learning mode, available speech commands are displayed in a command menu on a display device. This invention is comprised of two physical components which together form a system. A filter element is also provided to clean fine dirt and debris from the airstream. The first logical compartment is data loss independent with respect to the second logical compartment. The front, rear and side load lines below the final outer boundary of the load plateau are then contoured into a generally conical shaped surface in which the sides of the surface are still inclined at the predetermined material angle of repose.