octave

octaval /ok tay"veuhl, ok"teuh-/, adj.
/ok"tiv, -tayv/, n.
1. Music.
a. a tone on the eighth degree from a given tone.
b. the interval encompassed by such tones.
c. the harmonic combination of such tones.
d. a series of tones, or of keys of an instrument, extending through this interval.
2. a pipe-organ stop whose pipes give tones an octave above the normal pitch of the keys used.
3. a series or group of eight.
4. Also called octet. Pros.
a. a group of eight lines of verse, esp. the first eight lines of a sonnet in the Italian form. Cf. sestet (def. 1).
b. a stanza of eight lines.
5. the eighth of a series.
6. Eccles.
a. the eighth day from a feast day, counting the feast day as the first.
b. the period of eight days beginning with a feast day.
7. one eighth of a pipe of wine.
8. Fencing. the eighth of eight defensive positions.
adj.
9. pitched an octave higher.
[1300-50; ME < L octava eighth part, n. use of fem. of octavus, equiv. to oct- OCT- + -avus adj. suffix]

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music
      in music, an interval whose higher note has a sound-wave frequency of vibration twice that of its lower note. Thus the international standard pitch A above middle C vibrates at 440 hertz (cycles per second); the octave above this A vibrates at 880 hertz, while the octave below it vibrates at 220 hertz.

      Because of the close acoustic relationship between two notes an octave apart, the upper A is perceived as qualitatively identical to the lower A, although at a higher pitch. Many musical scales (scale) encompass an octave; in the diatonic scales (major, minor, and modal) of Western music, the octave is an interval of eight notes. It is the only interval to appear as a constant in the musical scales of nearly every culture.

      In harmony and in instrumentation, a note paired with its octave is said to be doubled. Melodic doubling in octaves is ubiquitous in all types of instrumental music.

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Universalium. 2010.

Look at other dictionaries:

  • octave — [ ɔktav ] n. f. • v. 1180; lat. octavus « huitième » 1 ♦ Liturg. Huitième jour après certaines fêtes. Durée de huit jours pendant laquelle on commémore une grande fête. 2 ♦ (1534) Mus. Intervalle parfait de huit degrés de l échelle diatonique (5… …   Encyclopédie Universelle

  • Octave — • A period of eight days, often observed liturgically Catholic Encyclopedia. Kevin Knight. 2006. Octave     Octave     † …   Catholic encyclopedia

  • octave — Octave. s. f. Huitaine. On appelle ainsi les sept jours qui suivent certaines Festes principales, dont l Eglise fait commemoration pendant toute une semaine. Pendant l octave du S. Sacrement. le premier jour, le dernier jour de l Octave. On… …   Dictionnaire de l'Académie française

  • Octave — Oc tave, n. [F., fr. L. octava an eighth, fr. octavus eighth, fr. octo eight. See {Eight}, and cf. {Octavo}, {Utas}.] 1. The eighth day after a church festival, the festival day being included; also, the week following a church festival. The… …   The Collaborative International Dictionary of English

  • octave — [äk′tiv, äk′tāv΄] n. [OFr < L octava, fem. of octavus, eighth < octo,EIGHT] 1. a) the eighth day following a church festival, counting the festival day as the first b) the entire period between the festival and this day 2. a group of eight… …   English World dictionary

  • Octave — hat verschiedene Bedeutungen: Octave ist ein männlicher Vorname. GNU Octave, eine Software zur numerischen Lösung mathematischer Probleme Die Abkürzung OCTAVE steht für: Operationally Critical Threat, Asset, and Vulnerability Evaluation, ein… …   Deutsch Wikipedia

  • Octave — Octave: GNU Octave  среда для численных вычислений Octave  альбом группы The Moody Blues Список значений слова или словосочетани …   Википедия

  • Octave — Patronyme porté en Lorraine (88, 54), également présent en Guadeloupe et en Martinique. Porté par l empereur Auguste, c est un gentilice latin, Octavius, formé sur l adjectif octavus (= huitième). En composition : Octave Emile (971). Forme… …   Noms de famille

  • octave — Octave, f. penac. Octava, Dont il vient, c est le huictiesme jour, comme l Octave d une feste, Octaua a festo dies …   Thresor de la langue françoyse

  • Octave — Oc tave, a. Consisting of eight; eight. Dryden. [1913 Webster] …   The Collaborative International Dictionary of English

  • Octave — (v. lat.), 1) so v.w. Octava; 2) das achte Intervall eines Tons in unserm Tonsystem. Schreibt man bei hochliegenden Tonreihen über die entsprechenden tieferen Noten die Abkürzung 8va..., so bedeutet dies, daß, so lange die punktirte Linie reicht …   Pierer's Universal-Lexikon

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