- Full text PDF available (1)
Human heart sound signals has the characteristics of strong noise, slight signal, strong randomness and vulnerability to outside interference. De-noising of heart sound signals, therefore, forms the primary basis for achieving non-invasive diagnosis of coronary heart disease. This paper proposes the wavelet Transform method for de-nosing heart sound… (More)
In the mol-ecule of the title compound, C(14)H(9)ClF(3)NO(2), the aromatic rings are oriented at a dihedral angle of 66.49 (3)°. Intra-molecular C-H⋯F and C-H⋯O inter-actions result in the formation of one planar five- and one non-planar six-membered ring. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds link the mol-ecules into chains.
Human heart sound signals has the characteristics of strong noise, slight signal, strong randomness and vulnerability to outside interference. Accordingly we design a heart sound detection system based on the new XH-6 sensor to collect the slight heart sound signals, to display in real-time and to save the phonocardiogram. Measurement on different… (More)