产生一个幅度为1，频率为w=1的正弦序列，采用均匀PCM方案，将其进行8级量化和16级量化，在同一坐标系内绘出原始信号和量化信号的曲线，并计算量化的S/N-Generating an amplitude of 1 and a frequency of the sinusoidal sequence w = 1, the uniform PCM scheme, which is carried out 8 and 16 quantization quantization, the original signal and the quantized signal curves plotted in the same coordinate system, and calculates quantized S/N