Matlab常用信号产生函数演示实例：编写一个M文件，依次产生均匀分布的随机序列、高斯白噪声随机序列、方波信号序列、三角波信号序列、正弦波信号序列，以及信噪比SNR为10dB的加性高斯白噪声正弦信号。-Matlab commonly used signal generating function demo examples: write a M file, in turn generating uniformly distributed random sequences, Gauss white noise sequence, square wave signal, triangle wave signal sequence, sine wave signal sequence, as well as for the 10dB than the SNR signal-to-noise additive Gauss white noise sine signal.