Question

what do you know about frequency of sound​

Answer 1

Frequency, sometimes referred to as pitch, is the number of times per second that a sound pressure wave repeats itself. ... The units of frequency are called hertz (Hz). Humans with normal hearing can hear sounds between 20 Hz and 20,000 Hz. Frequencies above 20,000 Hz are known as ultrasound.

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Answer 2

Answer:

Frequency, sometimes referred to as pitch, is the number of times per second that a sound pressure wave repeats itself. ... The units of frequency are called hertz (Hz). Humans with normal hearing can hear sounds between 20 Hz and 20,000 Hz. Frequencies above 20,000 Hz are known as ultrasound