| 21. | Detecting phase difference is very important in many applications, such as servo mechanisms, and demodulators.
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| 22. | This signal is mixed with the IF before the receiver's second detector ( demodulator ).
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| 23. | The only extra stage needed for AF ( other than the loudspeaker ) is an FM demodulator.
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| 24. | The mystery unravels a bit when you consider a modem's full name : MOdulator / DEModulator.
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| 25. | Some audio electronics manufacturers included the CD-4 demodulator as a built in feature of other equipment.
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| 26. | A four-channel audio receiver unit might contain the demodulator along with FM radio and amplifier circuitry.
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| 27. | A product detector is a type of demodulator used for filtered out from the output of the product detector.
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| 28. | These terms are traditionally used in connection with radio receivers, but many other systems use many kinds of demodulators.
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| 29. | There were even superheterodyne designs, which used the regenerative receiver as a combined IF and demodulator with fixed regeneration.
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| 30. | Generally, FM demodulators are not affected by amplitude variations, since the baseband is contained in the frequency deviations.
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