audio frequency

noun Acoustics, Electronics.
a frequency between 15 Hz and 20,000 Hz, within the range of normally audible sound.

Origin:
1910–15

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World English Dictionary
audio frequency
 
n
a frequency in the range 20 hertz to 20 000 hertz. A sound wave of this frequency would be audible to the human ear

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Audio frequency is always a great word to know.
So is ort. Does it mean:
the offspring of a zebra and a donkey.
a scrap or morsel of food left at a meal.
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