文件名称：基于FFT的算法
文件大小：628KB
文件格式：PDF
更新时间：2022-03-03 07:08:36
FFT
The Fast Fourier Transform (FFT) is a mathematical technique for transforming a time-domain digital signal into a frequency-domain representation of the relative amplitude of different frequency regions in the signal. The FFT is a method for doing this process very efficiently. It may be computed using a relatively short excerpt from a signal.