16 lines
384 B
JavaScript
16 lines
384 B
JavaScript
var FFT = numerics.fft;
|
|
|
|
var signal = [1,0,1,0];
|
|
var phasors = FFT.fft(signal);
|
|
|
|
log(phasors);
|
|
|
|
var frequencies = FFT.fftFreq(phasors, 8000), // Sample rate and coef is just used for length, and frequency step
|
|
magnitudes = FFT.fftMag(phasors);
|
|
var both = frequencies.map(function (f, ix) {
|
|
return {frequency: f, magnitude: magnitudes[ix]};
|
|
});
|
|
|
|
log(inspect(both));
|
|
|