Window Function Comparison

Compare window functions by computing the main-lobe width and peak sidelobe level of each, so the right trade-off can be chosen for a spectrum analyser.

Constraints

• Compare rectangular, Hann, Hamming and Blackman.
• Use heavy zero-padding to resolve the lobe shape.
• Report main-lobe width in bins and peak sidelobe in dB.
• Return a table or struct array.
• Normalise each window to unit peak before comparing.
• Sidelobe level must be negative in dB.