An Approximate Fast Fourier Transform Technique for Vernier Spectral Analysis

1974 ◽  
Author(s):  
Albert H. Nuttall
Keyword(s):  
Spectral Analysis ◽  
Fourier Transform ◽  
Fast Fourier Transform

Comparison of fast Fourier transform and autoregressive spectral analysis for the study of heart rate variability in diabetic patients

2005 ◽  
Vol 104 (3) ◽  
pp. 307-313 ◽  
Author(s):  
Denis Chemla ◽  
Jacques Young ◽  
Fabio Badilini ◽  
Pierre Maison-Blanche ◽  
Hélène Affres ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Spectral Analysis ◽  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Diabetic Patients

scholarly journals The Fast Fourier Transform and its application to tidal oscillations

1971 ◽  
Vol 20 (1) ◽  
pp. 145-199 ◽  
Author(s):  
A. dos Santos Franco ◽  
Norman J Rock
Keyword(s):  
Spectral Analysis ◽  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Degrees Of Freedom ◽  
Noise Spectrum ◽  
Weighted Sum ◽  
Fast Fourier Transform Analysis ◽  
Dence Interval

This paper proposes a new way of tidal spectral analysis based on the Cooley-Tukey algorithm, known as the Fast Fourier Transform. The Fast Fourier Transform analysis is used to compute both the harmonic constants of the tide and the power spectrum.The latter is obtained by means of a weighted sum. A new way is also derived to obtain the formula giving the number of the degrees of freedom,on which is based the confi dence interval corresponding to the noise spectrum.

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