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- MPX_filter abstract "MPX filter is a function found in cassette decks.FM stereo broadcasts contain a pilot tone at 19 kHz when stereo information is available at higher frequencies. This system was developed jointly by Zenith and General Electric. The normal monaural audio, the pilot tone (which serves as a phase reference when decoding the stereophonic information) and the double sideband stereophonic difference information are all mixed and broadcast together. The process of encoding the difference signal into the 23-53kHz band via double-sideband carrier-suppressed amplitude modulation is an instance of multiplexing.Residual high-frequency components of the signal remaining after de-multiplexing can be problematic when recording to analog magnetic media. While the higher frequencies are unlikely to survive filtering in the recording deck, the 19 kHz tone is within the 20 to 20,000 Hz frequency range for many tape formats, including compact cassette, and typically provides an audible beat (difference) tone in conjunction with the tape head bias signal used when recording. The recording may also be saturated by the pilot tone.An MPX filter on a tape deck is, at least, a notch filter that will block the 19 kHz pilot tone, and possibly higher frequencies in the 23-53kHz and 63-75kHz bands. The difference can be heard when recording from an FM stereo source and engaging and disengaging the MPX filter switch. On a three-head deck with monitoring, this can be heard while recording. The filter should not be engaged when recording from other sources, such as Compact Disc. The setting of the switch has no effect during playback.".
- MPX_filter wikiPageID "8160693".
- MPX_filter wikiPageLength "1815".
- MPX_filter wikiPageOutDegree "15".
- MPX_filter wikiPageRevisionID "618409685".
- MPX_filter wikiPageWikiLink Band-stop_filter.
- MPX_filter wikiPageWikiLink Cassette_deck.
- MPX_filter wikiPageWikiLink Category:Linear_filters.
- MPX_filter wikiPageWikiLink Category:Multiplexing.
- MPX_filter wikiPageWikiLink Category:Tone,_EQ_and_filter.
- MPX_filter wikiPageWikiLink Category:Wireless_tuning_and_filtering.
- MPX_filter wikiPageWikiLink Compact_Cassette.
- MPX_filter wikiPageWikiLink Compact_Disc.
- MPX_filter wikiPageWikiLink Compact_cassette.
- MPX_filter wikiPageWikiLink Compact_disc.
- MPX_filter wikiPageWikiLink Double_sideband.
- MPX_filter wikiPageWikiLink FM_broadcasting.
- MPX_filter wikiPageWikiLink FM_stereo.
- MPX_filter wikiPageWikiLink General_Electric.
- MPX_filter wikiPageWikiLink Monaural.
- MPX_filter wikiPageWikiLink Multiplexing.
- MPX_filter wikiPageWikiLink Notch_filter.
- MPX_filter wikiPageWikiLink Pilot_signal.
- MPX_filter wikiPageWikiLink Pilot_tone.
- MPX_filter wikiPageWikiLink Sideband.
- MPX_filter wikiPageWikiLink Zenith.
- MPX_filter wikiPageWikiLinkText "MPX filter".
- MPX_filter hasPhotoCollection MPX_filter.
- MPX_filter subject Category:Linear_filters.
- MPX_filter subject Category:Multiplexing.
- MPX_filter subject Category:Tone,_EQ_and_filter.
- MPX_filter subject Category:Wireless_tuning_and_filtering.
- MPX_filter hypernym Function.
- MPX_filter type ProgrammingLanguage.
- MPX_filter type Filter.
- MPX_filter type Protocol.
- MPX_filter comment "MPX filter is a function found in cassette decks.FM stereo broadcasts contain a pilot tone at 19 kHz when stereo information is available at higher frequencies. This system was developed jointly by Zenith and General Electric. The normal monaural audio, the pilot tone (which serves as a phase reference when decoding the stereophonic information) and the double sideband stereophonic difference information are all mixed and broadcast together.".
- MPX_filter label "MPX filter".
- MPX_filter sameAs MPX-Filter.
- MPX_filter sameAs m.026ts2r.
- MPX_filter sameAs Q1881781.
- MPX_filter sameAs Q1881781.
- MPX_filter wasDerivedFrom MPX_filter?oldid=618409685.
- MPX_filter isPrimaryTopicOf MPX_filter.