Designing a discrete signal with cutoff frequencies
5 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Jonathan George
el 26 de Mzo. de 2022
Respondida: Star Strider
el 26 de Mzo. de 2022
How would I go about designing a 4th order band stop discrete filter that is designed to filter signals sampled at 10Hz and with cutoff frequencies of 2.65Hz and 3.3Hz using the FIR window approach?
Many thanks.
1 comentario
AndresVar
el 26 de Mzo. de 2022
do you have the filter designer app? Introduction to Filter Designer - MATLAB & Simulink Example (mathworks.com)
Respuesta aceptada
Star Strider
el 26 de Mzo. de 2022
Fs = 10; % Sampling Frequency (Hz)
Fn = Fs/2; % Nyquist Frequency
order = 4;
Fp = [2.65 3.3]; % Passband Frequency Vector
h = fir1(order, Fp/Fn, 'bandpass');
figure
freqz(h, 1, 2^16, Fs)
The order is too low for it to actually have a bandpass characteristic. Increasing the order shows it correctly —
Fs = 10; % Sampling Frequency (Hz)
Fn = Fs/2; % Nyquist Frequency
order = 12;
Fp = [2.65 3.3]; % Passband Frequency Vector
h = fir1(order, Fp/Fn, 'bandpass');
figure
freqz(h, 1, 2^16, Fs)
.
0 comentarios
Más respuestas (0)
Ver también
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!