[[FourierTransform]] > [[DiscreteFourierTransformation]] - https://en.wikipedia.org/wiki/Discrete_Fourier_transform - [https://ja.wikipedia.org/wiki/%E9%9B%A2%E6%95%A3%E3%83%95%E3%83%BC%E3%83%AA%E3%82%A8%E5%A4%89%E6%8F%9B https://ja.wikipedia.org/wiki/離散フーリエ変換] |