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Topic: Ditonus

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	The Ultimate Ditonus Dog Breeds Information Guide and Reference
		In harmony, the ditonus (Latin for double tone — plural ditoni) is the ratio 5:4 (sesquiquartum) between a pair of frequencies or, equivalently, the ratio 4:5 between a pair of wavelengths.
		The ditonus is approximately equal to 4 semitones of equal temperament:
		A ditonus is also called a major third, but notice that here it has been defined as a simple ratio, such as is used in just intonation.
	www.dogluvers.com /dog_breeds/Ditonus (380 words)

	MARLUC9 TEXT
		Coniunctiones autem in musica septendecim esse dicuntur, scilicet semitonium, tonus, semiditonus, ditonus, dyatessaron, dyapente imperfectum, tritonus, dyapente, exadem minus, exadem maius, eptadem minus, eptadem maius, dyapason imperfectum, dyapason, dyapason dyatessaron, dyapason dyapente, et bisdyapason.
		De hiis Bernardus: Sillaba in musica est tonus, semitonium, ditonus, et semiditonus, que consonantiarum membra proprie nuncupantur.
		Ditonus autem in uno intervallo positus ratione dicta enarmonicum genus est, ut hic:
	www.music.indiana.edu /tml/14th/MARLUC9_TEXT.html (1948 words)

	Encyclopedia of Organ Stops (Site not responding. Last check: 2007-10-07)
		Osiris contains nearly a hundred examples of Corneta, but none are known to be single 3rd-sounding ranks.
		No examples are known of Decem, Detzehm, Detzem, Diatonus, Ditonus, Septadecima, Septuadecima, Sesquioctava, or Sixtil.
		: §135 Decem, §136 Detzem, §137 Ditonus, §197 Tertia.
	www.organstops.org /s/Seventeenth.html (492 words)

	gb-o613e (Site not responding. Last check: 2007-10-07)
		Et nomen quidem prius dictae semiditonus, posterioris autem ditonus.
		Superat namque semiditonum ditonus interuallo, quoniam ille duobus tonis, hic uero tono et semitonio tantum nititur.
		Unde quoque <47r> semiditonus dicitur, eo quod non sit plenus ditonus.
	www.lml.badw.de /info/gb-o613e.htm (255 words)

	TINCPT1 TEXT
		Quiquidem ditonus a dya per y graecum, quod est duo, et tonus dicitur, quasi ex duobus tonis perfectis constitutus.
		Dictusque est ditonus supra diapason quia ex ditono supra diapason assumpto constituitur.
		Dictusque est ditonus supra bisdiapason quia ex ditono supra bisdiapason assumpto constituatur.
	www.chmtl.indiana.edu /tml/15th/TINCPT1_TEXT.html (10278 words)

	Hexachords - Expanding the gamut
		At the same time, he champions the rhythmic subtleties of Petrus de Cruce and other late 13th-century musicians of his youth, and notes that singers sometimes engage in inflections outside the normal gamut.
		Thus in Book II, Chapter 80, in a discussion of the ditonus or major third (equal to two whole-tones), Jacobus observes that singers prefer the semiditonus or minor third (a whole-tone plus a diatonic semitone) in approaching the unison [4]:
		Here, as Jacobus notes, the interval la-fa in the lower voice is in fact a semiditonus or minor third (A3-F#3), although in the hexachord system it should always be a ditonus or major third.
	www.medieval.org /emfaq/harmony/hex2.html (5536 words)

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