Audio frequency

frequency which can be heard by the human ear

An audio frequency (abbreviation: AF), or audible frequency is characterized as a periodic vibration whose frequency is audible to the average human. While the range of frequencies that any individual can hear is largely related to environmental factors, the generally accepted standard range of audible frequencies is 20 to 20,000 hertz. Frequencies below 20 Hz can usually be felt rather than heard, assuming the amplitude of the vibration is high enough. Frequencies above 20,000 Hz can sometimes be sensed by young people, but high frequencies are the first to be affected by hearing loss due to age and/or prolonged exposure to very loud noises.
See more at Wikipedia.org...

Noun
1. an audible acoustic wave frequency
(synonym) audio
(hypernym) frequency, frequence, oftenness

The band of frequencies (approximately 20 Hz to 20 kHz) that, when transmitted as acoustic waves, can be heard by the normal human ear. (188 )

Synonyms and related words:
AF, CPS, EHF, HF, Hz, MF, RF, SHF, UHF, VHF, VLF, carrier frequency, cycles, extremely high frequency, frequency, frequency spectrum, fundamental, fundamental tone, harmonic, hertz, high frequency, intermediate frequency, intonation, kilocycles, kilohertz, low frequency, lower frequencies, medium frequency, megacycles, megahertz, monotone, monotony, overtone, partial, partial tone, pitch, radio frequency, spark frequency, spectrum, superhigh frequency, tone, tonelessness, ultrahigh frequency, upper frequencies, very high frequency, very low frequency