In the context of DSP, what is the purpose of windowing?

A) To increase the sample rate

B) To improve the frequency resolution of a signal

C) To reduce spectral leakage

D) To change the signal amplitude

Answer: C) To reduce spectral leakage

Explanation: Windowing is used to minimize spectral leakage in the frequency analysis of signals. By applying a window function, you can reduce the discontinuities at the boundaries of the sampled signal segment, resulting in better frequency representation.