FM
Frequency Modulation
The carrier frequency is constant.
The modulating frequency has the following characteristics.
1. Amplitude - the more intense the sound, the higher the amplitude.
2. Frequency - the frequency of the modulating signal - usually 20 to 200kh for voice.
The greater the amplitude, more of the fm carrier frequency is modified.
The higher the modulating frequency, the higher the frequency imposed on the carrier wave.
For example, a modulating frequency of 10,000 Hz, will cause the carrier frequency to increase 10kHz. (The carrier will change frequency 10,000 times per second.)
The carrier frequency is constant.
The modulating frequency has the following characteristics.
1. Amplitude - the more intense the sound, the higher the amplitude.
2. Frequency - the frequency of the modulating signal - usually 20 to 200kh for voice.
The greater the amplitude, more of the fm carrier frequency is modified.
The higher the modulating frequency, the higher the frequency imposed on the carrier wave.
For example, a modulating frequency of 10,000 Hz, will cause the carrier frequency to increase 10kHz. (The carrier will change frequency 10,000 times per second.)
posted by Shelton D'Cruz at 10:47 PM
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