In one example, we describe methods and systems for automated online merchant charity donations. Such support structure can be used to support a roof load, or a closure structure which closes an aperture in the roof, thus to provide access to the interior of a building through an aperture in the roof. An IDDQ defect is activated to generate IDDQ defect current within the integrated circuit. The method further includes transforming the feature vector using the transformation matrix of the feature vector, and updating the acoustic model stored in a memory device using the transformed feature vector. The system uses one or more EM wave sensors and one or more acoustic microphones to determine at least one characteristic of the human speech signal.