|
Amplitude Modulation is modifying a 'carrier' signal by varying its instantaneous power to represent the information it carries. Most commonly called 'AM'.
 Research Amplitude Modulation
Angle Modulation is refers to the change of angle of a signal that occurs in Frequency Modulation or Phase Modulation communications systems; usually analog.
Research Angle Modulation
CW (continuous wave) is the simplest form of radio signal modulation. The output of the transmitter is switched on and off, typically to form the characters of the Morse code.
Research CW
Frequency modulation (FM) is a system of radio transmission in which the amplitude of the carrier remains constant but the frequency is varied in accordance with the amplitude of the modulating waveform. In frequency modulation the loudness of the applied audio-frequency modulation is represented by the amount of change of carrier frequency, and the frequency of the signal is represented by the number of times the carrier frequency is changed every second.
Research Frequency Modulation
In telecommunications, K56flex is Lucent and Rockwell's joint 56K modulation protocol that makes Rockwell's K56Plus and Lucent's V.flex2 technologies interoperable
Research K56flex
K56Plus is Rockwell's proprietary protocol for 56000 bps modulation. Merged with Lucent's V.flex to create K56flex. OC-3 In telecommunications, OC-3 is a fibre optic line capable of 155 megabits per second (155,000K).
Research K56Plus
Modulation is alterations in the characteristics of analog carrier waves, impressed on the amplitude, phase and/or the frequency of the wave.
Research Modulation
In audio engineering, PCM (Pulse Code Modulation) is a scheme for encoding audio data as a series of pulses. Each pulse defines a transition from binary one to binary zero.
Research PCM
Phase modulation is a radio modulation technique similar to FM, that varies the carrier frequency of a transmitter in accordance with the strength and frequency of the modulating signal.
Research Phase Modulation
Pulse Code Modulation (PCM) is the standard method of digitally encording audio. It is the basic uncompressed data format used to record audio CDs, and also by computer formats such as Windows .wav and Applie AIFF.
Research Pulse Code Modulation
|
The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
©1993 - 2009 The Probert Encyclopaedia
Southampton, United Kingdom
|
|
|
Abbreviations
