fouriertest.frink

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//
// Test of the functions defined in Fourier.frink
//

use Fourier.frink

// Testing.  Create a regular sinewave
f = new array
for i=0 to 127
  f@i = cos[4 i/(2 pi)]

// Test and time DFT case.
start = now[]
b = DFT[f]
println[b]
end = now[]

println["Time in DFT is " + (end-start -> "ms")]

//scr = padAndScramble[f]
//println["Scrambled: $scr"]

//println[f]
start = now[]
bb = FFT[f]
end = now[]

println["Time in FFT is " + (end-start -> "ms")]

println[bb]

for [e] bb
   println[abs[e]]

for n = 0 to 127
   println[bb@n/b@n]

inverse = InverseFFT[bb]

println[inverse]


View or download fouriertest.frink in plain text format


This is a program written in the programming language Frink.
For more information, view the Frink Documentation or see More Sample Frink Programs.

Alan Eliasen was born 17835 days, 15 hours, 46 minutes ago.