1.产生正弦信号，方波信号，均匀噪声；

2.信号的叠加；

3.信号的相关分析；

4.信号的卷积；

5.信号的和；

6.信号的频谱图。-1. Generate sine signal, square wave signals, uniform noise

2. Signal superposition

3. The signal correlation analysis

4. The convolution of signal

5. The sum of signal

6. The signal spectrum.