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- Modulation abstract "In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal (high frequency signal), with a modulating signal that typically contains information to be transmitted.In telecommunications, modulation is the process of conveying a message signal, for example a digital bit stream or an analog audio signal, inside another signal that can be physically transmitted. Modulation of a sine waveform transforms a baseband message signal into a passband signal.A modulator is a device that performs modulation. A demodulator (sometimes detector or demod) is a device that performs demodulation, the inverse of modulation. A modem (from modulator–demodulator) can perform both operations.The aim of digital modulation is to transfer a digital bit stream over an analog bandpass channel, for example over the public switched telephone network (where a bandpass filter limits the frequency range to 300–3400 Hz), or over a limited radio frequency band.The aim of analog modulation is to transfer an analog baseband (or lowpass) signal, for example an audio signal or TV signal, over an analog bandpass channel at a different frequency, for example over a limited radio frequency band or a cable TV network channel.Analog and digital modulation facilitate frequency division multiplexing (FDM), where several low pass information signals are transferred simultaneously over the same shared physical medium, using separate passband channels (several different carrier frequencies).The aim of digital baseband modulation methods, also known as line coding, is to transfer a digital bit stream over a baseband channel, typically a non-filtered copper wire such as a serial bus or a wired local area network.The aim of pulse modulation methods is to transfer a narrowband analog signal, for example a phone call over a wideband baseband channel or, in some of the schemes, as a bit stream over another digital transmission system.In music synthesizers, modulation may be used to synthesise waveforms with an extensive overtone spectrum using a small number of oscillators. In this case the carrier frequency is typically in the same order or much lower than the modulating waveform. See for example frequency modulation synthesis or ring modulation synthesis.".
- Modulation thumbnail Amfm3-en-de.gif?width=300.
- Modulation wikiPageExternalLink modemmodulation-and-demodulation.
- Modulation wikiPageExternalLink multipliers_modulators.pdf.
- Modulation wikiPageExternalLink English.
- Modulation wikiPageID "20637".
- Modulation wikiPageRevisionID "605947467".
- Modulation hasPhotoCollection Modulation.
- Modulation subject Category:Frequency_mixers.
- Modulation subject Category:History_of_radio.
- Modulation subject Category:History_of_television.
- Modulation subject Category:Physical_layer_protocols.
- Modulation subject Category:Radio_modulation_modes.
- Modulation subject Category:Telecommunication_theory.
- Modulation subject Category:Television_terminology.
- Modulation comment "In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal (high frequency signal), with a modulating signal that typically contains information to be transmitted.In telecommunications, modulation is the process of conveying a message signal, for example a digital bit stream or an analog audio signal, inside another signal that can be physically transmitted.".
- Modulation label "Modulación (telecomunicación)".
- Modulation label "Modulacja".
- Modulation label "Modulatie (radio)".
- Modulation label "Modulation (Technik)".
- Modulation label "Modulation du signal".
- Modulation label "Modulation".
- Modulation label "Modulazione".
- Modulation label "Modulação".
- Modulation label "Модуляция".
- Modulation label "変調方式".
- Modulation label "調變".
- Modulation sameAs Modulace.
- Modulation sameAs Modulation_(Technik).
- Modulation sameAs Διαμόρφωση_σήματος.
- Modulation sameAs Modulación_(telecomunicación).
- Modulation sameAs Modulazio.
- Modulation sameAs Modulation_du_signal.
- Modulation sameAs Modulasi.
- Modulation sameAs Modulazione.
- Modulation sameAs 変調方式.
- Modulation sameAs 변조.
- Modulation sameAs Modulatie_(radio).
- Modulation sameAs Modulacja.
- Modulation sameAs Modulação.
- Modulation sameAs m.055y7.
- Modulation sameAs Q170474.
- Modulation sameAs Q170474.
- Modulation wasDerivedFrom Modulation?oldid=605947467.
- Modulation depiction Amfm3-en-de.gif.
- Modulation isPrimaryTopicOf Modulation.