设计一个程序，演示美丽的“池塘夜雨”景色：色彩缤纷的雨点飘飘洒洒地从天而降，滴滴入水有声，溅起圈圈微澜-Design a program that demonstrates the beautiful " pond night rain" scene: Durian colorful rain to fall from the sky, drops into the water with sound, the splashes circle Ripples

matlab编程，画出一段语音的语谱图，在不同时间声音的不同频率，可以比较出有声段和无声段的能量不同。-Matlab programming, draw the spectrogram of a voice, the sound of different frequencies in different time, you can compare audio segment and the energy of the silent segment.

用于计算射线声学声线,来找到所有声线中我想要的声线-to find the best acoustic line all