实现各种调制与解调方式的有关运算；对DSB，抑制载波的双边带、SSB，FM等调制方式下调制前后的信号波形及频谱进行观察；

对DSB，抑制载波的双边带、SSB，FM等调制方式下解调前后的信号波形及频谱进行观察；-Way to achieve a variety of modulation and demodulation of relevant operations　pairs of DSB, inhibit carrier DSB, SSB, FM modulation mode, such as modulation of the signal waveform and spectrum before and after the observation　right DSB, inhibit carrier DSB, SSB, FM such as modulation mode demodulation of the signal waveform and spectrum before and after the observation