カイザー窓の振幅スペクトル

clear; close all; clc;


N=2^5;

w_kaiser=kaiser(N,1);
amp=2.0*fft(w_kaiser,2048)/N;
freq = linspace(-0.5,0.5,length(amp));
mag = 20*log10(abs(fftshift(amp/max(abs(amp)))));
plot(freq,mag);
title('Kaiser window: beta=1.0');

figure();

w_kaiser=kaiser(N,7.5);
amp=2.0*fft(w_kaiser,2048)/N;
freq = linspace(-0.5,0.5,length(amp));
mag = 20*log10(abs(fftshift(amp/max(abs(amp)))));
plot(freq,mag);
title('Kaiser wiindow: beta=7.5');


big;