Hamming and hanning window

1. What is Hamming and Hanning window?
2. Which window is better Hamming or Hanning?
3. What is the difference between Hamming and rectangular window?
4. What is meant by Hanning window?

What is Hamming and Hanning window?

The Hamming window is an extension of the Hann window in the sense that it is a raised cosine window of the form. (A3.10) with a corresponding spectrum of the form. (A3.11) The parameter a permits the optimization of the destructive sidelobe cancellation mentioned in the description of the Hann window.

Which window is better Hamming or Hanning?

Hamming and Hanning

Between the two, the Hamming window does a better job of cancelling the nearest side lobe, but a poorer job of cancelling the rest. Due to their speed and good-enough noise performance, these windows have historically seen use in voice communications.

What is the difference between Hamming and rectangular window?

It is demonstrated that filter design using hamming window is comparatively better than rectangular and hanning window though the components required for all of the windowing technique are same, hamming shows higher stability. The stability is shown with the help of magnitude and phase spectrum of each window.

What is meant by Hanning window?

HANNING is a window function for signal or image filtering using a fast fourier transform. By processing data through HANNING before applying FFT, more realistic results can be obtained. The window calculated by HANNING is basically the first half of a cosine—in other words, only the positive cosine values.