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audio frequency |
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audio frequency: see sound sound, any disturbance that travels through an elastic medium such as air, ground, or water to be heard by the human ear. When a body vibrates, or moves back and forth (see vibration ), the oscillation causes a periodic disturbance of the surrounding air or other ..... Click the link for more information. ; radio radio, transmission or reception of electromagnetic radiation in the radio frequency range. The term is commonly applied also to the equipment used, especially to the radio receiver. ..... Click the link for more information. . audio frequency a frequency in the range 20 hertz to 20 000 hertz. A sound wave of this frequency would be audible to the human ear audio frequency [¦ȯd·ē·ō ¦frē·kwən·sē] (acoustics) A frequency that can be detected as a sound by the average young adult, approximately 15 to 20,000 hertz. Abbreviated af. Also known as sonic frequency; sound frequency. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Until recently, there was a lack of a well-characterized reference capacitor over the audio frequency range, resulting in large assigned uncertainties for capacitance calibrations to account for the uncharacterized frequency dependence of the Farad Bank. Operating on the no-license-required FRS frequencies, it provides access to 14 simplex channels, each of which can be tagged with any one of 38 different audio frequency squelch codes. These devices were first used for accurate calibration of ammeters and voltmeters in the audio frequency range (84) and later at radio frequencies (85) for measurements of voltage, current, and power. |
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