351:. It is designed to work with high levels of background noise near the microphone. One form operates by up-converting the audio signal to an ultrasonic frequency, hard limiting that signal, and then down converting the result. The frequency conversion uses image-cancelling heterodyning. The advantage of clipping the supersonic signal is that the odd harmonics produced will still be out-of-band when down converted. This is in contrast to standard hard limiting, as in an electric guitar fuzz box, where the harmonics are highly audible. This device ultimately gives a distinctive character to the voice communication, which despite being highly distorted, ensures spoken words remain clear.
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stage, reducing the effect of input signal level changes to the output. If two or more signals are received at the same time, a high-performance limiter stage can greatly reduce the effect of the weaker signals on the output. This is commonly referred to as the FM
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is in effect, limiters are used to lower the capacity of houses of non-paying customers. The limiters allow enough power to run a furnace and a few lights. Tampering with the limiter is illegal.
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Limiters are common as a safety device in live sound and broadcast applications to prevent sudden volume peaks from occurring. Limiters are also used as protective features in some components of
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receiver usually has at least one stage of amplification that performs a limiting function. This stage provides a constant level of signal to the FM
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Limiting can refer to a range of treatments designed to limit the maximum level of a signal. Treatments in order of decreasing severity range from
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and power amplifiers are more commonly equipped with limiter circuitry to prevent overloading the power amplifier and to protect speakers.
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Generally, FM demodulators are not affected by amplitude variations, since the baseband is contained in the
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For military two-way radio sets and aircraft VHF voice telecommunications, the voice limiter is known as a
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is any process by which the amplitude of a signal is prevented from exceeding a predetermined value.
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is a circuit that allows signals below a specified input power or level to pass unaffected while
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can be used in limiter circuits to reflect the energy back to the source or clip the signal.
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163:(lowering) the peaks of stronger signals that exceed this threshold. Limiting is a type of
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often use limiting combined with make-up gain to increase the perceived
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This article is about signal processing. For engine speed limiters, see
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504:"PIN Limiter Diodes in Receiver Protectors"
271:. Unsourced material may be challenged and
531:(3rd ed.). Focal Press. p. 81.
335:Learn how and when to remove this message
131:Learn how and when to remove this message
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147:Comparison of soft and hard clipping.
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529:Mastering Audio: the art and science
269:adding citations to reliable sources
69:adding citations to reliable sources
27:Electronic amplitude-limiting device
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382:of an audio recording during the
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593:General Services Administration
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182:sound reinforcement systems
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360:Bass instrument amplifiers
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554:"Utilities Disconnection"
233:In aerospace and military
165:dynamic range compression
552:Alberta, Government of.
463:Variable-gain amplifier
218:audio level compression
588:Federal Standard 1037C
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412:frequency deviations
364:Electric guitar amps
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65:improve this article
32:Centrifugal governor
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619:Electronic circuits
558:ucahelps.alberta.ca
376:Mastering engineers
355:In audio production
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603:MIL-STD-188
400:demodulator
202:loudspeaker
161:attenuating
153:electronics
613:Categories
563:2024-02-16
513:2015-07-28
509:. Skyworks
489:2018-05-22
469:References
370:PIN diodes
325:April 2018
295:newspapers
198:distortion
91:newspapers
483:"Limiter"
386:process.
284:"Limiter"
252:does not
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442:See also
420:AM radio
396:FM radio
390:FM radio
380:loudness
214:clipping
204:damage.
175:Limiting
169:Clipping
18:Limiting
309:scholar
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