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Unity Engine

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Unity Engine

Rectangular

Rectangular (no) window for FFT spectrum analysis.
読み終わるまでの所要時間 1 分最終更新 1ヶ月前

Definition

  • Type: Field
  • Namespace: UnityEngine
  • Assembly: UnityEngine.AudioModule
Rectangular = 0

Remarks

Window function: 
W[n] = 1.0
(no tapering), where 
n
is the sample index and 
N
is the window length.
Pass this value to the 
window
parameter of AudioListener.GetSpectrumData or AudioSource.GetSpectrumData. Unity still applies this unity window before the FFT.
The rectangular window preserves the full sample block and gives the narrowest effective main lobe, but it has the most spectral leakage. Use it for quick visualization or when neighboring bins bleeding into each other is acceptable. For analysis where peaks must be distinct, prefer FFTWindow.Hamming, FFTWindow.Hanning, or a Blackman-family window.
Additional Resources: FFTWindow, FFTWindow.Hamming.