Audible Frequency

Audible Frequency

• An audio frequency or audible frequency is characterized as a periodic vibration whose frequency is audible to the average human. 
• The SI unit of audio frequency is the hertz (Hz). It is the property of sound that most determines pitch.
• The generally accepted standard range of audible frequencies is 20 to 20,000 Hz, although the range of frequencies individuals hear is greatly influenced by environmental factors. 
• Frequencies below 20 Hz are generally felt rather than heard, assuming the amplitude of the vibration is great enough. 
• Frequencies above 20,000 Hz can sometimes be sensed by young people. 
• High frequencies are the first to be affected by hearing loss due to age and/or prolonged exposure to very loud noises.