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nd less distinct tones which accompany any principal, and apparently simple, tone, as the octave, the twelfth, the fifteenth, and the seventeenth. The name is also applied to the artificial tones produced by a string or column of air, when the impulse given to it suffices only to make a part of the string or column vib…

from Hide. Concealed; put out of view; secret; not known; mysterious. Hidden fifths or octaves (Mus.), consecutive fifths or octaves, not sounded, but suggested or implied in the parallel motion of two parts towards a fifth or an octave.

Said of intervals, when the lower tone is placed an octave higher, so that fifths become fourths, thirds sixths, etc.

f notes and intervals required in the various keys is much greater than the twelve to the octave used in systems of temperament. H. W. Poole.

irection in written or printed music to return to the proper pitch after having played an octave higher.

An interval of two octaves and a fifth.

An interval containing an octave and a second.

ewel, under Hollow. -- Open pipe (Mus.), a pipe open at the top. It has a pitch about an octave higher than a closed pipe of the same length. -- Open-timber roof (Arch.), a roof of which the constructional parts, together with the under side of the covering, or its lining, are treated ornamentally, and left to form t…

e orchestra and in military bands, having a loud tone, deep pitch, and a compass of three octaves; -- now generally supplanted by bass and contrabass tubas. Moore (Encyc. of Music).

ipe that it produces an overtone, or a note higher than the natural note; thus, the upper octaves of a flute are produced by overblowing.

air which yields the fundamental tone; one of the natural harmonic scale of tones, as the octave, twelfth, fifteenth, etc.; an aliquot or "partial" tone; a harmonic. See Harmonic, and Tone. Tyndall.

or union of sounds which is perfectly coalescent and agreeable to the ear, as the unison, octave, fifth, and fourth; a perfect consonance; a common chord in its original position of keynote, third, fifth, and octave. -- Perfect number (Arith.), a number equal to the sum of all its divisors; as, 28, whose aliquot parts…

A small, shrill flute, the pitch of which is an octave higher than the ordinary flute; an octave flute.

Having a scale running from the dominant to its octave; -- said of certain old church modes or tunes, as opposed to those called authentic, which ran from the tonic to its octave. Plagal cadence, a cadence in which the final chord on the tonic is preceded by the chord on the subdominant.

, sung in unison, in tones of equal length, and rarely extending beyond the compass of an octave. (b) A simple melody. -- Plain speaking, plainness or bluntness of speech.

An apparatus for coupling two octave notes, capable of being attached to a keyed instrument.

An imperfect octave.

he major seventh note of any scale; -- so called because, being but a half step below the octave, or key tone, and naturally leading up to that, it makes the ear sensible of its approaching sound. Called also the leading tone. -- Sensible horizon. See Horizon, n., 2. (a).

An interval of two octaves and a third.

An interval comprising two octaves and a second. Moore (Encyc. of Music.)