I am doing FFT of 1000000 data points. I have attached my FFT code. In this code, i got frequency 10.1 kHz but i want to remove that frequency. what kind of filter i can use and is chebyshev type 1 is suitable for this purpose.
data = csvread('5fr_chdis.csv');time = data(1:1000000,3);S = data(1:1000000,4);Fs = 10^(8); % sampling frequency
T = 1/Fs; % sampling timeperiod
L = 1000000; % length of signal
t = (0:L-1)*T;f = Fs*(0:(L/2))/L;f1 = f/1000;Y = fft(S);P2 = abs(Y/L);P1 = P2(1:L/2+1);P1(2:end-1) = 2*P1(2:end-1);plot(f1,P1)title('Frequency spectrum')xlabel('frequency (kHz)')ylabel('Amplitude')%axis([0 50 ylim])
axis([100 200 0 0.2])
Best Answer