About length of the signal

1. What is length of the signal?
2. What is signal length FFT?
3. How do you find the length of a FFT?
4. What is DFT length?

What is length of the signal?

Signal length is either the total number of points the vector containing it has, or if you also have a time points vector, the difference between the last and first time point. Zero padding is done by simple concatenation, e.g. signal_padded = [zeros (N,1); signal; zeros (N,1)];

What is signal length FFT?

The correct size of the FFT lengths for a linear convolution, is Nfft=Lx+Ly−1, where obviously those lengths correspond to the length of your signals x and y.

How do you find the length of a FFT?

FR = Fmax/N(Bins)

For a 44100 sampling rate, we have a 22050 Hz band. With a 1024 FFT size, we divide this band into 512 bins. FR = 22050/1024 ≃ 21,53 Hz. Basically, the FFT size can be defined independently from the window size.

What is DFT length?

FTD, DFT of length N=M=16 N = M = 16 . FTD and DFT result of finite duration signal of M=16 samples. Increasing the signal length x[n] with zeros, which is called zero padding , does not influence the resulting FTD equation. The zero padded signal and its FTD are shown in Fig.