对信号进行自适应核二次型时频分布变换，显示信号的时频特征-Adaptive signals nuclear quadratic transform time-frequency distribution, indicating the time-frequency characteristics

有限冲激响应滤波器的频域实现方法。可以通过快速傅里叶变换降低复杂度。-Finite Impulse Response Filter frequency domain method. Can reduce the complexity of the fast Fourier transform.