Nonlinear transient chirp signal modeling of the aortic and pulmonary components of the second heart sound

@article{Xu2000NonlinearTC,
  title={Nonlinear transient chirp signal modeling of the aortic and pulmonary components of the second heart sound},
  author={Jingping Xu and Louis-Gilles Durand and Philippe Pibarot},
  journal={IEEE Transactions on Biomedical Engineering},
  year={2000},
  volume={47},
  pages={1328-1335}
}
Describes a new approach based on the time-frequency representation of transient nonlinear chirp signals for modeling the aortic (A2) and the pulmonary (P2) components of the second heart sound (S2). It is demonstrated that each component is a narrow-band signal with decreasing instantaneous frequency defined by its instantaneous amplitude and its instantaneous phase. Each component Is also a polynomial phase signal, the instantaneous phase of which can be accurately represented by a polynomial… CONTINUE READING
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