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单词 audio frequency
释义

WordReference Random House Unabridged Dictionary of American English © 2024
audio fre′quency,  Acoustics, Electronics.
  1. Electronicsa frequency between 15 Hz and 20,000 Hz, within the range of normally audible sound.
  • 1910–15

Collins Concise English Dictionary © HarperCollins Publishers::
audio frequency n
  1. a frequency in the range 20 hertz to 20 000 hertz. A sound wave of this frequency would be audible to the human ear
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