Patent ID: 8548763

Claim:
An apparatus for monitoring a system responsive to application of a stimulus, the apparatus comprising: a memory for storing data; an input channel for sensory input; a processor connected to the memory and the input channel, the processor programmed to: receive the sensory input from the input channel as a sequential stream of data samples in a time domain wherein the sensory input is responsive to application of the stimulus to the system; convert the sequential stream of data samples from the time domain to a frequency domain using a Fourier transform to obtain a plurality of complex Fourier coefficients; apply a respective weighting factor to a magnitude of each complex Fourier coefficient to generate weighted magnitudes, each weighting factor based on a relative impact that a particular frequency associated with the magnitude has on the system; and calculate an exposure value for the system responsive to application of the stimulus using the weighted magnitudes; an output channel connected to the processor for transmitting an output of the processor external of the apparatus.