how to obtain the impulse response of halfband FIR filter

how to obtain the impulse response of halfband FIR filter??

clc;

close all;

n1= 15; %order

Fs= 100; %sampling frequency

fc= Fs/4; %cutoff frequency

%nyq_f= Fs/2; %normalize cutoff frequency wrt to nyquist freq

%wn= fc/nyq_f; %normalized fc

wc= (2*pi*fc)/Fs;

wn= wc/pi;

%window= hamming(n+1)

H1= fir1(n1,wn,hamming(n1+1));

h1= freqz(H1); %frequency response

f1= linspace(0,Fs/2,512);

w1= (2*pi*f1)/Fs;

w= w1/pi;

figure

plot (w, abs(h1))

[Star Strider]

See if the impz funciton will do what you want.

Answer 1

[Mathieu NOE]

hello

by definition H1 array is your impulse response (a FIR filter coefficients array is its impulse response)

clc;
close all;
n1= 15; %order
Fs= 100; %sampling frequency
fc= Fs/4; %cutoff frequency
%nyq_f= Fs/2; %normalize cutoff frequency wrt to nyquist freq
%wn= fc/nyq_f; %normalized fc
wc= (2*pi*fc)/Fs;
wn= wc/pi; 
%window= hamming(n+1)
H1= fir1(n1,wn,hamming(n1+1));
h1= freqz(H1); %frequency response
f1= linspace(0,Fs/2,512);
w1= (2*pi*f1)/Fs;
w= w1/pi;
figure
 plot (w, abs(h1))
 
 % IR
 figure
 plot (H1)
 xlabel('samples')