Healthy young adults should be able to hear frequencies anywhere between 20 and 20.000 Hz . The most important frequencies for speech and language are between 250 and 8000 Hz.
Read moreIs low or high frequency louder?
The answer to this question is clearly no. You might suspect, that the higher the frequency, the louder we perceive a noise , but frequency does not tell us how loud a sound is. Intensity or loudness is the amount of energy of a vibration and is measured in decibels (dB). If a sound is loud, it has a high intensity.
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