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hz是什麼意思
hz是什麼意思
更新时间:2025-07-17 09:27:28

  1、Hz是頻率的單位。頻率是指電脈沖,交流電波形,電磁波,聲波和機械的振動周期循環時,1秒鐘重複的次數。1Hz代表每秒鐘周期震動1次,60Hz代表每秒周期震動60次。

  2、對于聲音,人類的聽覺範圍為20Hz~20000Hz,低于這個範圍叫做次聲波,高于這個範圍的叫做超聲波。

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