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单词 sub-octave
释义

sub-octaven.

Brit. /ˌsʌbˈɒktɪv/, /ˌsʌbˈɒkteɪv/, U.S. /ˌsəbˈɑktəv/, /ˌsəbˈɑkˌteɪv/
Origin: Formed within English, by derivation. Etymons: sub- prefix, octave n.2
Etymology: < sub- prefix + octave n.2 Compare super-octave n. With suboctave coupler compare superoctave coupler at super-octave n. 2.
1. Music.
a. The octave below a given note; (also) an organ stop sounding a note one octave below the ordinary pitch, or at intervals of an octave below this (sometimes in first sub-octave, second sub-octave, etc.).
ΘΚΠ
society > leisure > the arts > music > musical sound > pitch > system of sounds or intervals > [noun] > diatonic scale series > notes in diatonic scale
keya1450
seventh1591
fifth1597
final1609
octave1656
sub-octave1659
keynote1677
mediant1721
sensible note?1775
subdominant?1775
submediant?1775
medius1782
leading note1786
nominal1786
subsemitone1799
superdominant1806
supertonic1806
tonic1806
subtonic1817
dominant1823
sensitive note1845
nominal note1884
1659 C. Simpson Division-violist i. 7 With the Lowest String put down a Note, to make it a Sub-Octave thereunto.
1740 J. Grassineau tr. S. De Brossard Musical Dict. 169 The keys of an Organ are usually divided into four octaves, viz. the second sub-octave, first sub-octave, middle octave and first octave.
1774 W. Hooper Rational Recreations II. lix. 237 Some organists add one or more stops to the first and second sub-octaves.
1872 Eng. Mech. 20 Sept. 18/1 A fourth string, sounding the sub-octave, seems to have been employed.
1879 Organ Voicing 18 All stops speaking at any interval other than the octave, super or sub.
1925 Musical Times 66 31/2 It is a sub-octave of the 3rd harmonic of the air-column.
2007 M. Jenkins Analog Synthesizers iii. 92 Its basic sound was extremely thin, but with a sub-octave mixed in.
b. In full suboctave coupler. A device in an organ or similar instrument which enables a note one octave lower than that being played to sound at the same time.
ΘΚΠ
society > leisure > the arts > music > musical instrument > keyboard instrument > organ > [noun] > other parts
super-octave1853
sub-octave1855
passage-board1880
1855 Musical World 3 Mar. 130/2 The introduction of the super and sub-octave couplers between the swell and great organ,..by means of which such extraordinary effects of combination are producible.
1876 J. Stainer & W. A. Barrett Dict. Musical Terms 411/1 Suboctave, a coupler in the organ which pulls down keys one octave below those which are struck.
1985 Music & Lett. 66 145 Most of the discrepancies relate to the sub-octave couplers.
2000 D. Knight in J. Berrow Towards Conservation & Restoration Hist. Organs 12 A full range of couplers, super- and sub-octave couplers, thumb and toe pistons is provided.
2. An eighth part of something. Obsolete. rare.
ΘΚΠ
the world > relative properties > number > specific numbers > eight > [noun] > division into eight > an eighth
eighth part1523
eighth1557
sub-octave1721
1721 G. Hooper Inq. State Anc. Meas. iii. vi. 159 Our Gallon..comes, I believe, in the place of a Congius; and has the Pint, for its suboctave.
1857 J. H. Alexander Inq. Eng. Syst. Weights & Meas. 78 The ratio of 32 to 28 is very nearly that of the corn-gallon, derived from the sub-octave of the cubic foot.
This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).
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n.1659
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