在 英语 中使用 Frequency modulation 的示例及其翻译为 中文
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It appears to employ a form of frequency modulation, sir.
Use Frequency Modulation to convey information, instead of Morse code.
Managua also has eleven frequency modulation(FM) radio stations.
Communications engineers call this system pulse frequency modulation.
Using assistive technology, such as frequency modulation systems and sound amplification;
FM signals can be generated using either direct orindirect frequency modulation:.
Controller for pulse frequency modulation and/ or pulse width modulation for driving external switches.
A Method of Reducing Disturbances in Radio Signaling by a System of Frequency Modulation".
On the other hand, in Frequency Modulation(FM), it is the frequency aspect that is modulated instead of the amplitude.
The same theory can furtherbe extended to frequency shift keying and frequency modulation.
SSTV uses frequency modulation, in which every different value of brightness in the image gets a different audio frequency. .
The two most common modes for voice transmissions are frequency modulation(FM) and single sideband(SSB).
Switching frequency modulation technology: By modulating the switching frequency fc, the energy concentrated on fc and its harmonics 2fc, 3fc….
AM: Amplitude Modulation called amplitude modulation, and FM: Frequency Modulation called FM.
Switching frequency modulation technology: through modulation switching frequency fc, focus on fc and its harmonics 2fc, 3fc….
That is, there are two types of modulation techniques,Amplitude Modulation(AM) and Frequency Modulation(FM).
In telecommunications and signal processing, frequency modulation is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave.
AM: Amplitude Modulation called amplitude modulation, and FM: Frequency Modulation called FM.
The PRS radios use narrow-band frequency modulation(NBFM) with a maximum deviation of 2.5 kilohertz. The channels are spaced at 12.5 kilohertz intervals. They were limited to 500 milliwatts(e. r. p).
AM: Amplitude Modulation is called amplitude modulation, and FM: Frequency Modulation is called frequency modulation. .
China assisted the building of over 60 IT-related projects, including optical cable telecommunication networks, e-government websites,and radio and television frequency modulation transmitters.
The polar coordinates conveniently separate the effects of amplitude modulation andphase(or frequency) modulation, and effectively demodulates certain kinds of signals.
Training in music promotes an individual's skills in the decoding of acoustic features,such as pitch height and frequency modulation(Koelsch et al., 2009).
The returned light is detected by a photodetector to recover modulation frequency.
Nearly every device or technology uses a different wireless frequency and modulation.
The purpose of these three blocks is to detect the presence of the modulation frequency.
In order to reduce the peak of noise spectrum, there are usually two methods:random frequency method and modulation frequency method.
The power of an AM signal plotted against frequency. Key: fc is the carrier frequency, fm is the maximum modulation frequency.
Recent ADSL modems use coded orthogonal frequency division modulation. .