CVI实时频谱测量，需用凌花采集卡硬件，可以实现频谱测量。-CVI Real-Time Spectrum measurements required Ling spent acquisition card hardware, spectrum measurement can be achieved.

matlab 实现傅里叶变换 fs FT DFS DFT FFT 以及余弦函数的抽样 离散傅里叶变换 频谱 函数叠加后的傅里叶变换 频谱 -matlab to achieve the Fourier transform fs FT DFS DFT FFT and cosine functions sampling discrete Fourier transform the spectrum of the Fourier transform of the spectrum function su

实现信号的时域及频域变换，得到时域波形图及频谱图-signal processing in the time and frequency domain