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What is a sine wave when making reference to radio waves?
Some one said sine wave has a pattern that repeats or frequency that repeats where non sine wave have no patterns and are random? Is that true?
2 Answers
- ?Lv 52 weeks ago
360 degree circle that is half a circle up and the other half down from the base line and in a line moving forward is the simplest was to see it vary the number of up and downs across one second to get cycles per second or FREQUENCY...
N.Shadows
- Lord BaconLv 72 weeks ago
A sine wave is any wave that is determined by the formula y = sin x. It is a smooth wave that continuously oscillates above and below a base line (zero). If you hear a sine wave, it is a smooth, pure sound.
It is not true that non-sine waves do not have a regular pattern. It is possible to produce a square wave or a saw-tooth wave or a complex mixtures of waves that has a regular pattern. Any such wave would give a constant sound if you could hear it but it would not be a clean, pure sound like a sine wave.
In relation to radio waves, a sine wave can be used as the carrier wave. Other sounds, such as voice or music, can be mixed in with the carrier wave to produce a complex wave form that does not have a regular pattern.
Since the frequency of the carrier wave is known (for example as the wavelength of the radio station. There is a direct relationship between wavelength and frequency.) a radio receiver tuned to that frequency/wavelength can detect the signals added to carrier wave and produce them as sound from your radio set.
