Data from: On the convergence and accuracy of the cardiovascular intrinsic frequency method

In this paper, we analyze the convergence, accuracy, and stability of Intrinsic Frequency (IF) method. IF method is a descendant of the Sparse Time Frequency Representation (STFR) methods. These methods are designed for analyzing non-linear and non-stationary signals. Specifically, the IF method is created to address the cardiovascular system that by nature is a nonlinear and non-stationary dynamical system. The IF is capable of handling specific non-linear and non-stationary signals with less mathematical regularity. In previous works we showed the clinical importance of the IF method. There, we showed that the IF method, can be used to evaluate cardiovascular performance. In this article we will present further details of the mathematical background of the IF method by discussing the convergence and the accuracy of the method with and without the noise. It will be shown that the waveform fit extracted from the signal is accurate even in the presence of noise.