What is the difference between radio frequency and audio frequency?

Answer 1

They terms frequency are essentially the same, except radio waves are electromagnetic, and acoustic waves are pressure waves. An audio frequency is a range of frequencies that we can hear, approx up to 20Khz, anything past 20Khz is said to be radio waves

Answer 2

Generally speaking, an audio frequency is something we can hear while a radio frequency is something we cannot. With audio frequencies, something - like a whistle, drum, rock band, baby ... etc. has caused differences in the air pressure around us (or water pressure if you swim under water) which the ear can detect, and it's the rate at which these pressure variation occur which make one sound a higher pitch (frequency)than another. Radio frequency works in a similar way except it's variations in electrical and magnetic fields, not air movement, which can be detected by TV's, cell phones, HiFi's and WiFi's, etc. We can't hear anything below about 250Hz (250 Hertz or cycles (pressure waves) per second) or above about 20kHz but electrical instruments can detect frequencies as low as 0.1Hz (1 electrical/magnetic variation every 10 seconds) and as high as 10THz and these limits are still growing. I'm not sure if we could "hear" a 1kHz radio frequency without something converting the electrical/magnetic energy into air/water pressure waves!

Answer 3

Audio frequency refers to a frequency, or range of frequencies, which we can hear.

Video frequency implies a high frequency, or range of frequencies, usually associated with television etc.

The word "video" actually means wide band.

Answer 4

Audio frequency describes the frequency of longitudinal waves (pressure waves) in air or water and can be sensed directly by the human ear. Radio frequency describes the frequency of transverse electromagnetic waves by which radio signals are transmitted. These waves cannot be sensed by people and must converted to audio signals by manufactured devices before people can hear them.