interval

(in’tér-val), n. [Formerly also inter- vall; =F. intervalle = Pr. entreval = Sp. intervalo = Pg. It. intervallo, interval intervals. The acoustical values of the more important recognized intervals are as follows: Pure. Tempered. Prime or uni- BOW Sas oars (CtoC, Fto F) 1:1 aed Augmented prime......(C to Ct, F to Ff) 24:25 Minor } 1:222 second....., (C to Dh, F to Gy) 15:16 Major second..... (CtoD, FtoG) 8:9 (or9:10) 1:28 Augmented second.....(C to Dt, F to Gt) 64:75 1:9% Minor third...(C to Eh, F to Ab) 5:6 } rly Major third...(CtoE, FtoA) 4:5 1:25 Perfect F fourth...... (CtoF, Fto Bh) 3:4 aozes Augmented fourth (tritone)....... (C to Ff, F to BQ) 32:45 (or 18: 25) Diminished 1:28 7 Gn Gee eer (C to Gb, F to Ch) 45:64 (or 25:36) x Perfect fifth:..(C toG, FtoC) 2:3 a3228 Augmented i) rs (C to Gt, F to C#) 16:25 1:93 Minor sixth...(C to Ab, Fto Db) 5:8 } Major sixth...(CtoA, FtoD) 3:5 1:24 Augmented Bitth -...... (C to At, F to D#) 128: 225 F Minor 1:2 seventh....(C to Bh, Fto Ey) 9:16 (or 5:9) Major seventh....(CtoB, FtoE) 8:15 1 Diminished zee octave...... (C to C’h, F to B’p) 135: 256 Octave v.52... (CtoC’ EF to Fk’ aes 2 1:2, The values given in the first column are those of the ideal intervals, such as are secured by using pure intonation; those given in the second column are those of equally tempered intonation, such as is used on keyed instruments, like the pianoforte and the organ. (See intonation2 and temperament.) A diatonic interval is one that occurs between two tones of a normal major or minor scale, A chromatic interval is one that occurs between a tone of such a scale and a tone foreign to that scale. An enharmonic interval is one on an instrument of fixed intonation, that is apparent only in the notation, being in fact a unison, as, on the pianoforte, the interval from F# to Gh. In musical science the theory of intervals is introductory to that of chords and to harmony in general. 6. In logic, a proposition. [Rare.]— angular intervals, in astron. See angular.— At intervals. (a) After intervals. See def. 3. (6) During or between intervals; between whiles or by turns; occasionally or alternately: as, to rest at intervals. Miriam watch’d and dozed at intervals. Tennyson, Enoch Arden, Consecutive or parallel intervals. See consecutive. —Direct interval, in music, an interval in its usual position: opposed to inverted interval. See det. 5.—Implied interval. See imply.—Natural intervals, in music, the intervals of the diatonic scale.—The extremes of,an interval. See extreme. intervale (in’tér-val), ». [A var. of interval, as if