Blackman

Blackman window for FFT spectrum analysis.

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最后更新于 1 个月前

Definition


Blackman = 4

Window function:

W[n] = 0.42 - 0.5 " cos(2π " n/N) + 0.08 " cos(4π " n/N)

, where

is the sample index and

is the window length.

Pass this value to the

window

parameter of AudioListener.GetSpectrumData or AudioSource.GetSpectrumData. The window is applied before the FFT to reduce spectral leakage between frequency bins.

Use the Blackman window when you need lower sidelobes than FFTWindow.Hamming or FFTWindow.Hanning and can accept a wider main lobe. For even stronger sidelobe suppression, use FFTWindow.BlackmanHarris.