The present invention relates to an IQ modulator using a current-mixing method used for a direct conversion wireless communication transmitter. A forgetting factor is calculated based on a difference between the intervals, and a statistical parameter is computed using the forgetting factor that causes different weights to be placed on the corresponding values of the metric, where the statistical parameter is part of an adaptive baseline. The software defines the method used to generate the unique identifying marks and the positioning of the labels with respect to each other. an onset of speech following a period of speech inactivity, or by tentative decoding of the energy parameter in the two encoding schemes followed by a comparison. By reducing the size of a blank area in a video frame, the invention reduces a pixel rate to become compatible with more types of back-end circuits having lower processing rates.