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1. Oxford Dictionary

   fundamental frequency

   • n.
     the lowest frequency which is produced by the oscillation of the whole of an object, as distinct from the harmonics of higher frequency.

   • noun: fundamental frequency, plural noun: fundamental frequencies

2. • 更多解釋

   fundamental frequency

   • IPA[ˌfəndəˌmen(t)l ˈfrēkwənsē]

   • n.
     the lowest frequency which is produced by the oscillation of the whole of an object, as ...

   Oxford American Dictionary