mirror of
https://asciireactor.com/otho/psdlag-agn.git
synced 2024-11-22 06:55:06 +00:00
23 lines
565 B
Perl
Executable File
23 lines
565 B
Perl
Executable File
#!/usr/bin/env perl
|
|
|
|
use feature say;
|
|
use utf8;
|
|
use PDL::FFT;
|
|
|
|
my $PI = 3.1415926539;
|
|
my $N = 64;
|
|
my ($series, $other_series);
|
|
for (my $k=0; $k<$N; $k++) {
|
|
$series->[$k] = sin(4*$k*$PI/$N) + cos(6*$k*$PI/$N);
|
|
}
|
|
my $fft = new Math::FFT($series);
|
|
my $coeff = $fft->rdft();
|
|
my $spectrum = $fft->spctrm;
|
|
my $original_data = $fft->invrdft($coeff);
|
|
|
|
for (my $k=0; $k<$N; $k++) {
|
|
$other_series->[$k] = sin(16*$k*$PI/$N) + cos(8*$k*$PI/$N);
|
|
}
|
|
my $other_fft = $fft->clone($other_series);
|
|
my $other_coeff = $other_fft->rdft();
|
|
my $correlation = $fft->correl($other_fft); |