カイザー窓の振幅スペクトル その２

clear; close all; clc;


beta=2.3052;
N=2^5;

w_kaiser=kaiser(N,beta);
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: N=32');

figure();

N=2^6;
w_kaiser=kaiser(N,beta);
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: N=64');


big;