how to filter a signal

Hi, I have a signal and I need to suppress the 50 [Hz] frequency components and keep the components up to 30 [Hz]. My fs =200Hz.

I do not know how or what to do. I welcome any advice. Thank you

Answer 1

[KALYAN ACHARJYA]

Read here, you will get the answer. I expect some efforts from your side, lerning by doing is best way.

Case 1: if you want to supress all frequency more than 50Hz, its Low pass filter.

How ti use it, read here

Case 2: If you want specific, supress the 50 Hz only (It can been done through Notch filter)

[b,a] = iircomb(cut_freq,input_signal,'notch'); 

Still, unable to solve it, let me know.