Documentation

Unity Engine

User Manual

Script Reference

Unity Engine

Hanning

Hanning (Hann) window for FFT spectrum analysis.
Read time 1 minuteLast updated 10 days ago

Definition

  • Type: Field
  • Namespace: UnityEngine
  • Assembly: UnityEngine.AudioModule
Hanning = 3

Remarks

Window function: 
W[n] = 0.5 * (1.0 - cos(2π * n/N))
, where 
n
is the sample index and 
N
is the window length. This is also known as the Hann window.
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.
The Hanning window is a common general-purpose raised-cosine window, similar to FFTWindow.Hamming. Use Hanning when you want smooth tapering at the block edges; compare with Hamming if you need slightly different sidelobe behavior. For stronger leakage control, use FFTWindow.Blackman or FFTWindow.BlackmanHarris.
Additional Resources: FFTWindow, FFTWindow.Hamming.