# Question: Suppose we form a smoothed periodogram of the PSD As defined

Suppose we form a smoothed periodogram of the PSD,

As defined in Equation (10.35), using a rectangular smoothing function,

Where fΔ is the width of the rectangle. If we want to form the same estimator using a windowed correlation- based estimate, what window function ( in the time domain) should we use?

As defined in Equation (10.35), using a rectangular smoothing function,

Where fΔ is the width of the rectangle. If we want to form the same estimator using a windowed correlation- based estimate, what window function ( in the time domain) should we use?

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