Bartlett window function

The Bartlett window is very similar to a triangular window, except that the end points are at zero. It is often used in signal processing for tapering a signal, without generating too much ripple in the frequency domain.

1. What is Bartlett window in DSP?
2. What is window function in Fourier Transform?
3. What does a windowing function do?
4. What is the purpose of Hamming window?

What is Bartlett window in DSP?

The Bartlett window is very similar to a triangular window as returned by the triang function. However, the Bartlett window always has zeros at the first and last samples, while the triangular window is nonzero at those points. For odd values of L , the center L-2 points of bartlett(L) are equivalent to triang(L-2) .

What is window function in Fourier Transform?

A window function provides a weighted selection of a portion of a time waveform for fast Fourier transform (FFT) analysis. It is generated by multiplying the original time waveform by a user-defined window function of some width. In this case, width equals two times the number of analysis lines.

What does a windowing function do?

Window functions perform calculations on a set of rows that are related together. But, unlike the aggregate functions, windowing functions do not collapse the result of the rows into a single value. Instead, all the rows maintain their original identity and the calculated result is returned for every row.

What is the purpose of Hamming window?

In particular, a Hamming window will reduce the size of the first Sinc side lobe of "leakage" right next to the frequency peak in exchange for actually more "leakage" (or convolution splatter) far from the frequency of interest. Other windows may be more appropriate if you wish a different trade-off.