模拟信号的数字化传输---增量调制系统

用SIMULINK建立简单增量调制系统的模型并进行

（3）　　正弦信号

（4）　　语音信号

的传输。

改变抽样频率和量化台阶大小，观察重建信号以及量化噪声信号的波形；对于语音信号主观评价声音质量的变化。

-Digitized analog signal transmission systems--- delta modulation delta modulation SIMULINK easy set up of the model system and (3) sinusoidal signal (4) transmission of voice signals. Change the sampling frequency and quantization step size, to observe the reconstruction of signal and quantization noise signal waveform　for subjective evaluation of the speech signal changes in sound quality.