scholarly journals Rancang Bangun Phonocardiograf Berbasis Labview

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Ramdani Febrian ◽  
Budi Sumanto
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Analytical Method ◽  
Human Heart ◽  
Heart Sound ◽  
Signal Shape ◽  
Labview Software

The aim of this research is to develop a phonocardiograph system to display the signal and information form of the human heart sound examination. The analytical method applied is to use the Fast Fourier Transform (FFT) to determine the frequency of responses of human heart sound signals by using Labview software. The results obtained indicate the system able to display the signal shape of the heart sound, based on ten respondents whose data are taken shows the range of heart sound frequencies is in the range of 145 to 225 Hz with a duration of 81 to 120 bpm. Keywords: Phonocardiograph, FFT, Labview

Use of the fast fourier transform for frequency analysis of the first heart sound in normal man

1976 ◽  
Vol 14 (1) ◽  
pp. 69-73 ◽  
Author(s):  
Ajit P. Yoganathan ◽  
Ramesh Gupta ◽  
Firdaus E. Udwadia ◽  
J. Wayen Miller ◽  
William H. Corcoran ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Frequency Analysis ◽  
Heart Sound ◽  
First Heart Sound ◽  
Normal Man

Contact Calculation for Rolling Bearings in Quarter-Spaces

2015 ◽  
Vol 642 ◽  
pp. 333-336
Author(s):  
Zhi Jian Wang ◽  
Xue Jin Shen ◽  
Xiao Yang Chen
Keyword(s):  
Fourier Transform ◽  
Free Surface ◽  
Fast Fourier Transform ◽  
Contact Pressure ◽  
Conjugate Gradient ◽  
Gradient Method ◽  
Analytical Method ◽  
Elastic Contact ◽  
Rolling Bearings ◽  
Modified Conjugate Gradient Method

An elastic contact solution considering the effect of free surface and code are developed using Hetenyi’s approach and semi-analytical method. Discrete convolution-fast Fourier transform (DC-FFT) is used to calculate elastic deformation. The modified conjugate gradient method is applied to solve surface contact pressure. By comparing with other literatures’ results, the program made by authors is proved valid.

A Four-Year Follow-Up of Mitral Bioprostheses by Fast Fourier Transform Monitoring of the First Heart Sound

1994 ◽  
Vol 8 (1) ◽  
pp. 7-10
Author(s):  
Enrico Baracca ◽  
Maria Brunazzi Brunazzi ◽  
Paolo Sgobino ◽  
Marco Vaccari ◽  
Mario Pasqualini ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Heart Sound ◽  
First Heart Sound

Use of the fast Fourier transform in the frequency analysis of the second heart sound in normal man

1976 ◽  
Vol 14 (4) ◽  
pp. 455-460 ◽  
Author(s):  
Ajit P. Yoganathan ◽  
Ramesh Gupta ◽  
William H. Corcoran ◽  
Firdaus E. Udwadia ◽  
Radha Sarma ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Frequency Analysis ◽  
Heart Sound ◽  
Normal Man ◽  
Second Heart Sound
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