What does amplitude-companded single-sideband modulation mean?
Definitions for amplitude-companded single-sideband modulation
am·pli·tude-com·pand·ed sin·gle-side·band mod·u·la·tion
This dictionary definitions page includes all the possible meanings, example usage and translations of the word amplitude-companded single-sideband modulation.
Wikipedia
Amplitude-companded single-sideband modulation
Amplitude-companded single-sideband (ACSB) is a narrowband modulation method using a single-sideband with a pilot tone, allowing an expander in the receiver to restore the amplitude that was severely compressed by the transmitter. The pilot tone serves as a frequency reference for the receiver, eliminating the signal distortion that would occur with single-sideband suppressed carrier modulation when the receiver is off frequency.It offers improved effective range over standard SSB modulation while simultaneously retaining backwards compatibility with standard SSB radios. ACSB also offers reduced bandwidth and improved range for a given power level compared with narrow band FM modulation.The companding used in ACSB is a type of dynamic range reduction wherein the difference in amplitude between the louder and softer sounds is reduced prior to transmission. A corresponding expander circuit in the receiver inverts this transformation in order to restore the dynamic range. If a conventional SSB receiver is used to receive ACSB signals, some distortion may be noticed but generally the signals are quite intelligible. Similar techniques are used in audio noise reduction circuits such as those developed for Dolby.ACSB is being used by amateur radio operators, air-to-ground phones, as well as mobile-satellite services.
Wikidata
Amplitude-companded single-sideband modulation
ACSSB is a narrowband modulation method using a single sideband with a pilot tone, allowing an expander in the receiver to restore the amplitude that was severely compressed by the transmitter. It offers improved effective range over standard SSB modulation while simultaneously retaining backwards compatibility with standard SSB radios. ACSSB also offers reduced bandwidth and improved range for a given power level compared with narrow band FM modulation. The companding used in ACSSB is a type of dynamic range reduction where in the difference in amplitude between the louder and softer sounds is reduced prior to transmission. A corresponding expander circuit in the receiver inverts this transformation in order to restore the dynamic range. If a conventional SSB receiver is used to receive ACSSB signals, some distortion may be noticed but generally the signals are quite intelligible. Similar techniques are used in audio noise reduction circuits such as those developed for Dolby. ACSSB is being used by amateur radio operators, air-to-ground phones, as well as mobile-satellite services.
Numerology
Chaldean Numerology
The numerical value of amplitude-companded single-sideband modulation in Chaldean Numerology is: 2
Pythagorean Numerology
The numerical value of amplitude-companded single-sideband modulation in Pythagorean Numerology is: 1
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"amplitude-companded single-sideband modulation." Definitions.net. STANDS4 LLC, 2024. Web. 30 Apr. 2024. <https://www.definitions.net/definition/amplitude-companded+single-sideband+modulation>.
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