This is a single sideband modulation source, for the signal and the signal has been modulated spectrum.

说明：这是单边带调制源码，求消息信号和已调信号的频谱。

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For more efficient use of shortwave broadcasting band and improvement of broadcasting quality, single sideband broadcasting has been placed on the agenda.

为更有效地利用短波广播频段，改善其广播质量，单边带制广播提到了议事日程。

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Amplitude modulation is divided into 4 ways: am (amplitude), DSB (bilateral with carrier suppression modulation), SSB (single sideband modulation), VSB (VSB).

振幅调制分为4种方式：AM(普通调幅)、DSB(抑制载波双边带调幅)、SSB(单边带调幅)、VSB(残留边带调幅)。

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