2006-10-27 02:46:46 · 3 answers · asked by lekh raj b 1 in Science & Mathematics ➔ Engineering
A frequence range or frequency band is a range of wave frequencies. It most often refers to either a range of frequencies in sound or a range of frequencies in electromagnetic radiation, which includes light and radio waves.
Many radio devices operate within a specified frequency range which limits the frequencies on which it is allowed to transmit. The lower-bound and upper-bound frequencies are the points at which signal strength of the device falls off by 3dB.
2006-10-27 02:47:37 · answer #1 · answered by Vishal B 2 · 1⤊ 0⤋
Frequency Response is the Frequency Range versus Amplitude. In other words, at 20 Hz, a certain input signal level may produce 100 dB of output. At 1 kHz, that same input level may produce 102 dB of output. At 10 kHz, 95 dB, and so on.Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency. The period is the duration of time of one cycle in a repeating event, so the period is the reciprocal of the frequency.
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2015-08-05 19:19:55 · answer #2 · answered by john 4 · 0⤊ 0⤋
(1) A group of frequencies in the electromagnetic spectrum that are assigned by regulatory agencies for a particular purpose. Also called a "frequency band." See frequency bands, spectrum, satellite bands and optical bands.
(2) A group of frequencies that occur naturally such as the audio spectrum.
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2015-08-05 01:28:56 · answer #3 · answered by shaun 4 · 0⤊ 0⤋