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Instant-use add-on functions for the Wolfram Language
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Generate the zero-order discrete prolate spheroidal sequence window
ResourceFunction["DPSSWindow"][n] gives the order-0 discrete prolate spheroidal sequence (DPSS) window of length n. | |
ResourceFunction["DPSSWindow"][n,α] uses the parameter α. |
A DPSS window of length 21:
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Visualize the window:
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A DPSS window with a specified parameter:
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Create a lowpass FIR filter with cut-off frequency of π/5 and length 15:
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Apply a DPSS window to the filter to improve stop-band attenuation:
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Create a Log-magnitude plot of the power spectra of the two filters:
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Use the DPSS window to diminish the effect of signal partitioning when computing the spectrogram:
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DPSSWindow[n,0] is equivalent to the rectangular window:
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The spectral concentration ratio of the DPSS window for length n and bandwidth -B<=ω<B:
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Compare with a Blackman window:
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