About: Interval ratio

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In music, an interval ratio is a ratio of the frequencies of the pitches in a musical interval. For example, a just perfect fifth (for example C to G) is 3:2, 1.5, and may be approximated by an equal tempered perfect fifth which is 27/12 (about 1.498). If the A above middle C is 440 Hz, the perfect fifth above it would be E, at (440*1.5=) 660 Hz, while the equal tempered E5 is 659.255 Hz. For ease of comparison intervals may also be measured in cents, a logarithmic measurement. For example, the just perfect fifth is 701.955 cents while the equal tempered perfect fifth is 700 cents.

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rdf:type	yago:Abstraction100002137 yago:Measure100033615 yago:WikicatIntervals yago:TimeInterval115269513
rdfs:label	Interval ratio (en)
rdfs:comment	In music, an interval ratio is a ratio of the frequencies of the pitches in a musical interval. For example, a just perfect fifth (for example C to G) is 3:2, 1.5, and may be approximated by an equal tempered perfect fifth which is 27/12 (about 1.498). If the A above middle C is 440 Hz, the perfect fifth above it would be E, at (440*1.5=) 660 Hz, while the equal tempered E5 is 659.255 Hz. For ease of comparison intervals may also be measured in cents, a logarithmic measurement. For example, the just perfect fifth is 701.955 cents while the equal tempered perfect fifth is 700 cents. (en)
foaf:depiction
dcterms:subject	Ratios Intervals (music)
Wikipage page ID	27510655 (xsd:integer)
Wikipage revision ID	1120769092 (xsd:integer)
Link from a Wikipage to another Wikipage	Pythagorean tuning Electronic tuner E (musical note) Limit (music) Inverse second Musical instrument 12-tone equal temperament Consonance and dissonance Equal temperament Frequency Music Pitch (music) Major third Meantone temperament Cent (music) Just major tone Diminished third Perfect fifth Inverse second Interval (music) Inversion (music) Ratios Just intonation Minor third Intervals (music) Middle C Octave Ratio Minor sixth Unison Perfect fourth Septimal minor sixth 7-limit Tuning system A440 (Concert A) Integer number
sameAs	Interval ratio Interval ratio Interval ratio Interval ratio
dbp:wikiPageUsesTemplate	dbt:Intervals dbt:Audio dbt:Musical_tuning dbt:Unreferenced
thumbnail	wiki-commons:Special:FilePath/Major_second_on_C.svg?width=300
has abstract	In music, an interval ratio is a ratio of the frequencies of the pitches in a musical interval. For example, a just perfect fifth (for example C to G) is 3:2, 1.5, and may be approximated by an equal tempered perfect fifth which is 27/12 (about 1.498). If the A above middle C is 440 Hz, the perfect fifth above it would be E, at (440*1.5=) 660 Hz, while the equal tempered E5 is 659.255 Hz. Ratios, rather than direct frequency measurements, allow musicians to work with relative pitch measurements applicable to many instruments in an intuitive manner, whereas one rarely has the frequencies of fixed pitched instruments memorized and rarely has the capabilities to measure the changes of adjustable pitch instruments (electronic tuner). Ratios have an inverse relationship to string length, for example stopping a string at two-thirds (2:3) its length produces a pitch one and one-half (3:2) that of the open string (not to be confused with inversion). Intervals may be ranked by relative consonance and dissonance. As such ratios with lower integers are generally more consonant than intervals with higher integers. For example, 2:1, 4:3, 9:8, 65536:59049, etc. Consonance and dissonance may more subtly be defined by limit, wherein the ratios whose limit, which includes its integer multiples, is lower are generally more consonant. For example, the 3-limit 128:81 and the 7-limit 14:9. Despite having larger integers 128:81 is less dissonant than 14:9, as according to limit theory. For ease of comparison intervals may also be measured in cents, a logarithmic measurement. For example, the just perfect fifth is 701.955 cents while the equal tempered perfect fifth is 700 cents. (en)
gold:hypernym	Ratio
prov:wasDerivedFrom	wikipedia-en:Interval_ratio?oldid=1120769092&ns=0
page length (characters) of wiki page	4788 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Interval_ratio
is Link from a Wikipage to another Wikipage of	Pythagorean comma Pythagorean tuning Quarter-comma meantone Index of music articles Orthotonophonium 12 equal temperament Genesis of a Music Octave (electronics) Pythagorean interval Ragisma Equal temperament The Well-Tuned Piano Arabic maqam Comma (music) Hemiola 7-limit tuning Tonality diamond Five-limit tuning Chromatic circle Diminished second Perfect fifth Interval (music) Syntonic comma Diesis Seventh chord Polyrhythm Frequency ratio
is Wikipage redirect of	Frequency ratio
is foaf:primaryTopic of	wikipedia-en:Interval_ratio

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