What determines the accuracy of the phase result in a DFT bin?

1. How do you increase accuracy in FFT?
2. What are the bins of a DFT?
3. What is the result of DFT?
4. What is phase DFT?

How do you increase accuracy in FFT?

The most intuitive way to increase the frequency resolution of an FFT is to increase the size while keeping the sampling frequency constant. Doing this will increase the number of frequency bins that are created, decreasing the frequency difference between each.

What are the bins of a DFT?

The DFT output frequency bins correspond to the frequencies Fk=kFsN. With the more common frequency axis of half positive, half negative frequencies, the frequency bins for a DFT are given by f=np. arange(-Fs/2, Fs/2, Fs/N) . In this case, an fftshift of the DFT output is required before plotting the result.

What is the result of DFT?

In mathematics, the discrete Fourier transform (DFT) converts a finite sequence of equally-spaced samples of a function into a same-length sequence of equally-spaced samples of the discrete-time Fourier transform (DTFT), which is a complex-valued function of frequency.

What is phase DFT?

The phase is the arctangent of the ratio of the imaginary and real parts and is usually between π and -π radians, or 180 and -180 degrees. For real signals (x[i] real), such as those you obtain from the output of one channel of a DAQ device, the DFT is symmetric with properties given by the following equations.