先自问自答 1] 还不知是否正确... 请 指教 1] 1800, 2000 2200; 2800, 3000, 3200; 4800, 5000, 5200; 7200, 7400, 7600. 是这样对吗? 2] 呢? === "老音学生" <[email protected]> 撰写於邮件新闻:UDrKh.24448$DN.8648@pd7urf2no... > 可否请教一下 FM 及 AM 的问题 > > 1] > A complex waveform (the carrier) with a fundamental frequency of 2k Hz is > amplitude modulated by a sine tone with frequency of 200 Hz, (the > modulator). > Because the carrier is a complex waveform, a sideband pair will be formed > around each of its original partials. > If the partials of the carrier waveform are 2000, 3000, 5000, and 7400 Hz, > what will be the frequencies of the resulting spectrum? > Remember to include the frequencies of the carrier waveform in your > answer. > > 2] > A single tone of 2500 Hz (the carrier) is frequency modulated by a sine > tone (the modulator) of 140 Hz. > Assume that three sideband pairs will be created. > What will be the frequencies of the resulting spectrum? > > 我不是学 电机 电子 物理 或 类似这些的,故搞不懂 > 请 不吝指导提示帮忙 > 谢谢 ^_^ > > -- 老音学生 --