Re: 請教一下 FM 及 AM 的問題
唉~ 還是得自問自答...
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?
2080, 2220, 2360
2500,
2640, 2780, 2920
是這樣吧 ^_^
>> -- 老音學生 --
===
"老音學生" <goaway@nowhere.not> 撰寫於郵件新聞:FI3Lh.32584$zU1.27808@pd7urf1no...
> 先自問自答 1]
> 還不知是否正確... 請 指教
>
> 1]
> 1800, 2000 2200; 2800, 3000, 3200; 4800, 5000, 5200; 7200, 7400, 7600.
> 是這樣對嗎?
>
> 2] 呢?
>
> ===
>
> "老音學生" <goaway@nowhere.not> 撰寫於郵件新聞:UDrKh.24448$DN.8648@pd7urf2no...
>> 可否請教一下 FM 及 AM 的問題
>>
>> 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?
>>
>> 我不是學 電機 電子 物理 或 類似這些的,故搞不懂
>> 請 不吝指導提示幫忙
>> 謝謝 ^_^
>>
>> -- 老音學生 --
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