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範例:振動與聲波[94學測]

數位資訊以0 和1 兩種位元所組成的二進位數來儲存或傳送。一電腦所輸出的電壓訊號為000010000100001… 的二進位週期性數列,其中0 和1 各表示一個位元,而輸出的電壓與時間的關係如圖7 所示。若該電腦以9600位元/秒的速率將此訊息傳送至喇叭播放,則下列何者最接近喇叭所發出的聲音頻率?

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Posted in 歷屆學測(推甄)考題, 波的性質.

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