用声卡输出的单边带信号源，SSB下边带信号，载波15KHz，输入声音带宽设为300~3.4KHz，SSB调制后输出带宽为11.6K~14.7KHz，可以给SSB解调器实验做信号源了。-Single-sideband signal with the sound output source, SSB below band signal, carrier 15KHz, enter the voice bandwidth set at 300 ~ 3.4KHz, SSB modulated output