FFT is a mathematical tool commonly used in digital signal processing, and is characterized by fast operational speed and low SNR threshold value.
快速傅里叶变换是数字信号处理的常用数学工具，以运算速度快和信噪比阈值低为特点。
The basic factors related with photonic information processing are ultrahigh response speed, low photon power threshold, high conversion efficiency and relatively low device cost.
光子信息处理的基本要素是超高速响应速度、低光子功率阈值、高转换效率以及较低的器件成本。
The basic factors related with photonic information processing are ultrahigh response speed, low photon power threshold, high conversion efficiency and relatively low device cost.
光子信息处理的基本要素是超高速响应速度、低光子功率阈值、高转换效率以及较低的器件成本。
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