frequency-amplitude modulation

См. также в других словарях:

• amplitude modulation — n. 1. the variation of the amplitude of a carrier wave in accordance with the signal being broadcast 2. a broadcasting system that uses this: Abbrev. AM: Cf. FREQUENCY MODULATION …   English World dictionary

• Amplitude modulation — Passband modulation v · d · e Analog modulation AM · …   Wikipedia

• Amplitude modulation signalling system — The amplitude modulation signalling system (AMSS or the AM signalling system) is a digital system for adding low bit rate information to an analogue amplitude modulated broadcast signal in the same manner as the Radio Data System (RDS) for… …   Wikipedia

• Quadrature amplitude modulation — (QAM) (Pronounced IPA|kwa:m) is a modulation scheme which conveys data by changing ( modulating ) the amplitude of two carrier waves. These two waves, usually sinusoids, are out of phase with each other by 90° and are thus called quadrature… …   Wikipedia

• Quadrature amplitude modulation — Quadraturamplitudenmodulation (Abkürzung: QAM, engl: Quadrature Amplitude Modulation) ist eine Modulationsart in der elektronischen Nachrichtentechnik, die Amplitudenmodulation und Phasenmodulation miteinander kombiniert. Dabei werden derselben… …   Deutsch Wikipedia

• amplitude modulation — noun Date: 1921 modulation of the amplitude of a radio carrier wave in accordance with the strength of the audio or other signal; also a broadcasting system using such modulation compare frequency modulation …   New Collegiate Dictionary

• amplitude modulation — (AM) A type of radio wave in which the amplitude changes rather than the frequency. See frequency modulation …   Dictionary of automotive terms

• amplitude modulation — Electronics, Radio. See AM. [1920 25] * * *       variation of the amplitude of a carrier wave (commonly a radio wave) in accordance with the characteristics of a signal, such as a vocal or musical sound composed of audio frequency waves. See… …   Universalium

• amplitude modulation — /ˌæmplətjud mɒdʒəˈleɪʃən/ (say .ampluhtyoohd mojuh layshuhn) noun a system of radio transmission in which the carrier wave is modulated by changing its amplitude (distinguished from frequency modulation). Abbrev.: AM …  

• amplitude modulation — (AM)    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 …   IT glossary of terms, acronyms and abbreviations

• Amplitude — is the magnitude of change in the oscillating variable, with each oscillation, within an oscillating system. For instance, sound waves are oscillations in atmospheric pressure and their amplitudes are proportional to the change in pressure during …   Wikipedia