DBrn (original) (raw)
The symbol dBrn or dB(rn) is an abbreviation for decibels above reference noise. Weighted noise power in dB is referred to 1.0 picowatt. Thus, 0 dBrn = -90 dBm. Use of 144 line, 144-receiver, or C-message weighting, or flat weighting, can be indicated in parentheses. With C-message weighting, a one-milliwatt, 1000 Hz tone will read +90 dBrn, but the same power as white noise, randomly distributed over a 3 kHz band will read approximately +88.5 dBrn, because of the frequency weighting.
| Property | Value |
|---|---|
| dbo:abstract | The symbol dBrn or dB(rn) is an abbreviation for decibels above reference noise. Weighted noise power in dB is referred to 1.0 picowatt. Thus, 0 dBrn = -90 dBm. Use of 144 line, 144-receiver, or C-message weighting, or flat weighting, can be indicated in parentheses. With C-message weighting, a one-milliwatt, 1000 Hz tone will read +90 dBrn, but the same power as white noise, randomly distributed over a 3 kHz band will read approximately +88.5 dBrn, because of the frequency weighting. With 144 weightings, a one milliwatt, 1000 Hz white noise tone will also read +90 dBrn, but the same 3 kHz power will only read +82 dBrn, because of the different frequency weighting. Note: In telecommunications, dBrn adjusted also called dBa denotes "decibels adjusted", i.e. weighted absolute noise power. This is totally unrelated to and not a synonym for dB(A). (en) |
| dbo:wikiPageID | 41004 (xsd:integer) |
| dbo:wikiPageLength | 1259 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1027587977 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Bracket dbr:DBm dbr:Psophometric_weighting dbr:Frequency dbr:Decibels dbr:Picowatt dbr:White_noise dbr:DB(A) dbr:Hertz dbr:Band_(radio) dbc:Logarithmic_scales_of_measurement dbc:Mechanics dbc:Units_of_measurement dbr:Reference_noise dbr:Milliwatt dbr:Line_(electrical_engineering) dbr:Flat_weighting dbr:Noise_power dbr:Frequency_weighting |
| dbp:cs1Dates | y (en) |
| dbp:date | May 2021 (en) |
| dbp:wikiPageUsesTemplate | dbt:Use_dmy_dates dbt:Decibel dbt:FS1037C_MS188 dbt:Lowercase |
| dcterms:subject | dbc:Logarithmic_scales_of_measurement dbc:Mechanics dbc:Units_of_measurement |
| gold:hypernym | dbr:Abbreviation |
| rdf:type | yago:WikicatUnitsOfMeasurement yago:Abstraction100002137 yago:DefiniteQuantity113576101 yago:Measure100033615 dbo:Organisation yago:UnitOfMeasurement113583724 |
| rdfs:comment | The symbol dBrn or dB(rn) is an abbreviation for decibels above reference noise. Weighted noise power in dB is referred to 1.0 picowatt. Thus, 0 dBrn = -90 dBm. Use of 144 line, 144-receiver, or C-message weighting, or flat weighting, can be indicated in parentheses. With C-message weighting, a one-milliwatt, 1000 Hz tone will read +90 dBrn, but the same power as white noise, randomly distributed over a 3 kHz band will read approximately +88.5 dBrn, because of the frequency weighting. (en) |
| rdfs:label | DBrn (en) |
| owl:sameAs | freebase:DBrn yago-res:DBrn wikidata:DBrn https://global.dbpedia.org/id/4it4S |
| prov:wasDerivedFrom | wikipedia-en:DBrn?oldid=1027587977&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:DBrn |
| is dbo:wikiPageRedirects of | dbr:DB(a) dbr:DB(rn) dbr:DBrn_adjusted dbr:DBRN |
| is dbo:wikiPageWikiLink of | dbr:Decibel dbr:Index_of_electronics_articles dbr:Index_of_physics_articles_(D) dbr:List_of_noise_topics dbr:Noise_(electronics) dbr:DB(a) dbr:DB(rn) dbr:DBrn_adjusted dbr:Channel_noise_level dbr:Reference_noise dbr:DBRN dbr:Flat_weighting |
| is foaf:primaryTopic of | wikipedia-en:DBrn |