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modulation    音标拼音: [m,ɑdʒəl'eʃən]
n. 调音,调节,抑扬

调音,调节,抑扬

modulation
调变;调制


modulation
宽( 频 )带调频 WBFM

modulation
调变

modulation
n 1: a musical passage moving from one key to another [synonym:
{transition}, {modulation}]
2: (electronics) the transmission of a signal by using it to
vary a carrier wave; changing the carrier's amplitude or
frequency or phase
3: rise and fall of the voice pitch [synonym: {intonation},
{modulation}, {pitch contour}]
4: a manner of speaking in which the loudness or pitch or tone
of the voice is modified [synonym: {modulation}, {inflection}]
5: the act of modifying or adjusting according to due measure
and proportion (as with regard to artistic effect)

Modulation \Mod`u*la"tion\, n. [L. modulatio: cf. F.
modulation.]
1. The act of modulating, or the state of being modulated;
as, the modulation of the voice.
[1913 Webster]

2. Sound modulated; melody. [R.] --Thomson.
[1913 Webster]

3. (Mus.) A change of key, whether transient, or until the
music becomes established in the new key; a shifting of
the tonality of a piece, so that the harmonies all center
upon a new keynote or tonic; the art of transition out of
the original key into one nearly related, and so on, it
may be, by successive changes, into a key quite remote.
There are also sudden and unprepared modulations.
[1913 Webster]

4. (Electronics) The alteration of hte amplitude, intensity,
frequency, or phase (of the carrier wave of a radio
signal) at intervals, so as to represent information to be
transmitted.
[WordNet 1.5]

124 Moby Thesaurus words for "modulation":
AM, FM, PM, abatement, about-face, accommodation, adaptation,
adjustment, allayment, alleviation, alteration, amelioration,
amplitude modulation, apostasy, arrangement, assuagement,
betterment, blunting, break, calming, change, change of heart,
changeableness, constructive change, continuity, conversion,
damping, deadening, defection, degeneration, degenerative change,
demulsion, deterioration, deviation, difference, diminution,
discontinuity, divergence, diversification, diversion, diversity,
double sideband, dulcification, dulling, easing, falling-off,
fitting, flip-flop, gradual change, harmonization, hushing,
improvement, inflection, instrumentation, intonation,
intonation pattern, leniency, lessening, letdown, letup,
lightening, loosening, lulling, melioration, mitigation,
modification, mollification, orchestration, overthrow,
pacification, palliation, phrasing, pitch, pitch accent,
preparation, qualification, quietening, quieting, radical change,
re-creation, realignment, redesign, reduction, reform, reformation,
relaxation, remaking, remission, renewal, reshaping, resolution,
restructuring, reversal, revival, revivification, revolution,
setting, shift, side frequency, sideband, slackening, softening,
solution, soothing, speech tune, subduement, sudden change,
suprasegmental, suspension, switch, tempering, tone, tone painting,
total change, tranquilization, transcription, transition, turn,
turnabout, upheaval, variation, variety, violent change,
worsening


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  • Signal modulation - Wikipedia
    Categorization for signal modulation based on data and carrier types Signal modulation is the process of varying one or more properties of a periodic waveform in electronics and telecommunication for the purpose of transmitting information The process encodes information in the form of a message signal modulated onto a carrier signal to be transmitted [1] For example, the message signal
  • What is Modulation? - GeeksforGeeks
    Frequency Modulation: It is a type of modulation in which only the frequency of the carrier signal is varied to represent the frequency of the data whereas the phase and the amplitude of the signals are kept unchanged
  • Modulation | Definition, Types, Facts | Britannica
    modulation, in electronics, technique for impressing information (voice, music, pictures, or data) on a radio -frequency carrier wave by varying one or more characteristics of the wave in accordance with the information signal There are various forms of modulation, each designed to alter a particular characteristic of the carrier wave The most commonly altered characteristics include
  • Modulation Basics: AM, FM, PM, QPSK, GMSK, GFSK, QAM and more
    Modulation Modulation is the process of "mounting" a low-frequency information signal (like your voice) onto a high-frequency carrier wave by changing its properties like amplitude, phase, or frequency The primary reason of modulation of high frequency carrier wave is to reduce the size of antenna
  • MODULATION Definition Meaning - Merriam-Webster
    The meaning of MODULATION is an inflection of the tone or pitch of the voice; specifically : the use of stress or pitch to convey meaning
  • What is Modulation: Basics, Types, Applications - RF Wireless World
    Modulation is the process of modifying a carrier signal’s amplitude, frequency or phase to transmit information efficiently over a communication channel It is a fundamental concept in wireless communication, broadcasting, satellite systems, optical networks and digital communication technologies used worldwide
  • Amplitude modulation - Wikipedia
    Amplitude modulation (AM) is a signal modulation technique used in electronic communication, most commonly for transmitting messages with a radio wave In amplitude modulation, the instantaneous amplitude of the wave is varied in proportion to that of the message signal, such as an audio signal [1] This technique contrasts with angle modulation, in which either the frequency of the carrier
  • What is Modulation? Definition, Need of Modulation and Types of . . .
    Modulation, the process in which the carrier signal is varied according to the information bearing signal also called the modulating signal During modulation, some characteristics it can be amplitude, frequency, or phase is varied in accordance with the original information-bearing signal that has to be transmitted
  • Telecommunication - Modulation, Signals, Frequency | Britannica
    Telecommunication - Modulation, Signals, Frequency: In many telecommunications systems, it is necessary to represent an information-bearing signal with a waveform that can pass accurately through a transmission medium This assigning of a suitable waveform is accomplished by modulation, which is the process by which some characteristic of a carrier wave is varied in accordance with an
  • What Is Modulation? | Definition from TechTarget
    Modulation is the process of converting data into radio waves by adding information to an electronic or optical carrier signal A carrier signal is one with a steady waveform (a constant amplitude and frequency)





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