Jump to content

Window function

From Simple English Wikipedia, the free encyclopedia

A customizable window function feature in Avee Player version 1.2.83.

Rectangular window

Rectangular window

Rectangular window frequency response is a sinc function.

Hann window

Hann window

Hann window is the default window function in Avee Player.

Hamming window

Hamming window, a0 = 0.53836 and a1 = 0.46164. The original Hamming window would have a0 = 0.54 and a1 = 0.46.

Hamming window are similar to this above, but mainlobe width is slightly narrower and spectral leakage is increased.

Blackman window

Blackman window; α = 0.16

Blackman window is used for AnalyserNode.getByteFrequencyData, wider mainlobe than Hann window.

Blackman-Harris window

Blackman–Harris window

Blackman-Harris window have a relatively wider mainlobe width than Hann window.

Nuttall window

Nuttall window, continuous first derivative

Nuttall window are very similar to Blackman-Harris window.

Flattop window

Flat Top window

Flattop window is designed to be a flatter mainlobe.

Kaiser window

Kaiser window, α = 2
Kaiser window, α = 3

Kaiser window are adjustable windowing function used for FIR filtering and spectral analysis.

Gaussian window

Gaussian window, σ = 0.4

Gaussian window are adjustable window function used for Gabor transform[source?].