用 Matlab 编程模拟 李萨如曲线 两互相垂直的，频率成一定整数比例关系的简谐振动合成，合振动为有一定规则的稳定的闭合曲线，称李萨如曲线。运行程序，令a=pi/3,k=3可得李萨如曲线-simulation using Matlab programming Lissajous curve as two mutually perpendicular. frequency of a certain proportion of the whole synthesis of harmonic v

这是一个用555芯片做的一个多谐振荡的报警器-This is a 555 chip to do with a multi-harmonic oscillation of the alarm

谐波小波的时域波形图，以及频谱图，和仿真实例-Harmonic wavelet time-domain waveforms and frequency spectrum, and simulation