Rescale means a process of making range of signal values to have the same conditions. This is mainly used when you want to analyze only changing patterns of values, regardless of range of signal values. Such process of adjusting range of signals to specific conditions is called Normalization. Extreme values, mean, standard deviation, gain, and offset can be normalized. This preliminary processing will contribute to higher reliability of analysis results. Depending on rescaling conditions, there are Rescaling by Extremes, Rescaling by Gain and Offset, and Rescaling by Mean and Standard Deviation.