[Use of fast Fourier transform (FFT) in the frequency spectrum analysis of the closing sound of the prosthetic valve in the patient].
D006347:Heart Sounds; D006349:Heart Valve Diseases / Q000175:diagnosis* / Q000503:physiopathology; D006350:Heart Valve Prosthesis; D006801:Humans; D008838:Microcomputers; D010701:Phonocardiography / Q000295:instrumentation*; D013057:Spectrum Analysis