expand for answer
Frequency modulation (FM)
A modulation technique in which the carrier frequency is shifted by an amount proportional to the value of the modulating signal. The amplitude of the carrier signal remains constant. The information signal causes the carrier signal to increase or decrease its frequency based on the waveform of the information signal.
Similar items:
The technique of varying the amplitude or wavelength of a carrier wave in direct proportion to the strength of the input signal while maintaining a constant frequency and phase.
[view]
[view]
The process where there is a greater number of samples provided at lower power conditions of the signal waveform rather than at the higher power portions of the same waveform.
[view]
[view]
The most common and most important method that a telephone system in North America can use to sample a voice signal and convert that sample into an equivalent digital code. PCM is a digital modulation method that encodes a pulse amplitude modulated signal into a PCM signal.
[view]
[view]
A measurement of the number of wave oscillations within a specific time identified using the unit Hertz (Hz), or oscillations per second. Radio waves have a frequency between 3 Hz and 300 GHz. The rate at which an electromagnetic waveform alternates, usually measured in Hertz.
[view]
[view]
The first step in converting analog waveforms into digital signals for transmission.
[view]
[view]
There are no comments yet.