%parametre tastavene, aby sa dali pekne zobrazit nuly
[y, Fs] = audioread( 'auda_say1-10_44khz.wav');
myfir = [1 zeros(1,round(.001*Fs)) 0.8];
myout = conv(myfir, y);
subplot(2,1,1);
freqz(myfir,1);
subplot(2,1,2);
zplane (myfir,1);
sound(myout, Fs);