List of pitch intervals

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Comparison between tunings: Pythagorean, equal-tempered, quarter-comma meantone, and others. For each, the common origin is arbitrarily chosen as C. The degrees are arranged in the order or the cycle of fifths; as in each of these tunings except just intonation all fifths are of the same size, the tunings appear as straight lines, the slope indicating the relative tempering with respect to Pythagorean, which has pure fifths (3:2, 702 cents). The Pythagorean A (at the left) is at 792 cents, G (at the right) at 816 cents; the difference is the Pythagorean comma. Equal temperament by definition is such that A and G are at the same level. 14-comma meantone produces the "just" major third (5:4, 386 cents, a syntonic comma lower than the Pythagorean one of 408 cents). 13-comma meantone produces the "just" minor third (6:5, 316 cents, a syntonic comma higher than the Pythagorean one of 294 cents). In both these meantone temperaments, the enharmony, here the difference between A and G, is much larger than in Pythagorean, and with the flat degree higher than the sharp one.
Comparison of two sets of musical intervals. The equal-tempered intervals are black; the Pythagorean intervals are green.

Below is a list of intervals expressible in terms of a prime limit (see Terminology), completed by a choice of intervals in various equal subdivisions of the octave or of other intervals.

For commonly encountered harmonic or melodic intervals between pairs of notes in contemporary Western music theory, without consideration of the way in which they are tuned, see Interval (music) § Main intervals.

Terminology[edit]

  • The prime limit[1] henceforth referred to simply as the limit, is the largest prime number occurring in the factorizations of the numerator and denominator of the frequency ratio describing a rational interval. For instance, the limit of the just perfect fourth (4:3) is 3, but the just minor tone (10:9) has a limit of 5, because 10 can be factored into 2 × 5 (and 9 into 3 × 3). There exists another type of limit, the odd limit, a concept used by Harry Partch (bigger of odd numbers obtained after dividing numerator and denominator by highest possible powers of 2), but it is not used here. The term "limit" was devised by Partch.[1]
  • By definition, every interval in a given limit can also be part of a limit of higher order. For instance, a 3-limit unit can also be part of a 5-limit tuning and so on. By sorting the limit columns in the table below, all intervals of a given limit can be brought together (sort backwards by clicking the button twice).
  • Pythagorean tuning means 3-limit intonation—a ratio of numbers with prime factors no higher than three.
  • Just intonation means 5-limit intonation—a ratio of numbers with prime factors no higher than five.
  • Septimal, undecimal, tridecimal, and septendecimal mean, respectively, 7, 11, 13, and 17-limit intonation.
  • Meantone refers to meantone temperament, where the whole tone is the mean of the major third. In general, a meantone is constructed in the same way as Pythagorean tuning, as a stack of fifths: the tone is reached after two fifths, the major third after four, so that as all fifths are the same, the tone is the mean of the third. In a meantone temperament, each fifth is narrowed ("tempered") by the same small amount. The most common of meantone temperaments is the quarter-comma meantone, in which each fifth is tempered by 14 of the syntonic comma, so that after four steps the major third (as C-G-D-A-E) is a full syntonic comma lower than the Pythagorean one. The extremes of the meantone systems encountered in historical practice are the Pythagorean tuning, where the whole tone corresponds to 9:8, i.e. (3:2)2/2, the mean of the major third (3:2)4/4, and the fifth (3:2) is not tempered; and the 13-comma meantone, where the fifth is tempered to the extent that three ascending fifths produce a pure minor third.(See meantone temperaments). The music program Logic Pro uses also 12-comma meantone temperament.
  • Equal-tempered refers to X-tone equal temperament with intervals corresponding to X divisions per octave.
  • Tempered intervals however cannot be expressed in terms of prime limits and, unless exceptions, are not found in the table below.
  • The table can also be sorted by frequency ratio, by cents, or alphabetically.
  • Superparticular ratios are intervals that can be expressed as the ratio of two consecutive integers.

List[edit]

Column Legend
TET X-tone equal temperament (12-tet, etc.).
Limit 3-limit intonation, or Pythagorean.
5-limit "just" intonation, or just.
7-limit intonation, or septimal.
11-limit intonation, or undecimal.
13-limit intonation, or tridecimal.
17-limit intonation, or septendecimal.
19-limit intonation, or novendecimal.
Higher limits.
M Meantone temperament or tuning.
S Superparticular ratio (no separate color code).
List of musical intervals
Cents Note (from C) Freq. ratio Prime factors Interval name TET Limit M S
0.00
C[2] 1 : 1 1 : 1 audio speaker iconplay Unison,[3] monophony,[4] perfect prime,[3] tonic,[5] or fundamental 1, 12 3 M
0.03
65537 : 65536 65537 : 216 audio speaker iconplay Sixty-five-thousand-five-hundred-thirty-seventh harmonic 65537 S
0.40
C7 4375 : 4374 54×7 : 2×37 audio speaker iconplay Ragisma[3][6] 7 S
0.72
E7777triple flat+ 2401 : 2400 74 : 25×3×52 audio speaker iconplay Breedsma[3][6] 7 S
1.00
21/1200 21/1200 audio speaker iconplay Cent[7] 1200
1.20
21/1000 21/1000 audio speaker iconplay Millioctave 1000
1.95
B++ 32805 : 32768 38×5 : 215 audio speaker iconplay Schisma[3][5] 5
1.96
3:2÷(27/12) 3 : 219/12 Grad, Werckmeister[8]
3.99
101/1000 21/1000×51/1000 audio speaker iconplay Savart or eptaméride 301.03
7.71
B7 upside-down 225 : 224 32×52 : 25×7 audio speaker iconplay Septimal kleisma,[3][6] marvel comma 7 S
8.11
Bdouble sharp 15625 : 15552 56 : 26×35 audio speaker iconplay Kleisma or semicomma majeur[3][6] 5
10.06
Adouble sharpdouble sharp++ 2109375 : 2097152 33×57 : 221 audio speaker iconplay Semicomma,[3][6] Fokker's comma[3] 5
10.85
C43U 160 : 159 25×5 : 3×53 audio speaker iconplay Difference between 5:3 & 53:32 53 S
11.98
C29 145 : 144 5×29 : 24×32 audio speaker iconplay Difference between 29:16 & 9:5 29 S
12.50
21/96 21/96 audio speaker iconplay Sixteenth tone 96
13.07
B7 upside-down7 upside-down7 upside-down 1728 : 1715 26×33 : 5×73 audio speaker iconplay Orwell comma[3][9] 7
13.47
C43 129 : 128 3×43 : 27 audio speaker iconplay Hundred-twenty-ninth harmonic 43 S
13.79
Ddouble flat7 126 : 125 2×32×7 : 53 audio speaker iconplay Small septimal semicomma,[6] small septimal comma,[3] starling comma 7 S
14.37
C 121 : 120 112 : 23×3×5 audio speaker iconplay Undecimal seconds comma[3] 11 S
16.67
C[a] 21/72 21/72 audio speaker iconplay 1 step in 72 equal temperament 72
18.13
C19U 96 : 95 25×3 : 5×19 audio speaker iconplay Difference between 19:16 & 6:5 19 S
19.55
Ddouble flat--[2] 2048 : 2025 211 : 34×52 audio speaker iconplay Diaschisma,[3][6] minor comma 5
21.51
C+[2] 81 : 80 34 : 24×5 audio speaker iconplay Syntonic comma,[3][5][6] major comma, komma, chromatic diesis, or comma of Didymus[3][6][10][11] 5 S
22.64
21/53 21/53 audio speaker iconplay Holdrian comma, Holder's comma, 1 step in 53 equal temperament 53
23.46
B+++ 531441 : 524288 312 : 219 audio speaker iconplay Pythagorean comma,[3][5][6][10][11] ditonic comma[3][6] 3
25.00
21/48 21/48 audio speaker iconplay Eighth tone 48
26.84
C13 65 : 64 5×13 : 26 audio speaker iconplay Sixty-fifth harmonic,[5] 13th-partial chroma[3] 13 S
27.26
C7 upside-down 64 : 63 26 : 32×7 audio speaker iconplay Septimal comma,[3][6][11] Archytas' comma,[3] 63rd subharmonic 7 S
29.27
21/41 21/41 audio speaker iconplay 1 step in 41 equal temperament 41
31.19
D7 56 : 55 23×7 : 5×11 audio speaker iconplay Undecimal diesis,[3] Ptolemy's enharmonic:[5] difference between (11 : 8) and (7 : 5) tritone 11 S
33.33
CHalf up arrow.png/DHalf down arrow.pngHalf down arrow.png[a] 21/36 21/36 audio speaker iconplay Sixth tone 36, 72
34.28
C17 51 : 50 3×17 : 2×52 audio speaker iconplay Difference between 17:16 & 25:24 17 S
34.98
B7 upside-down7 upside-down- 50 : 49 2×52 : 72 audio speaker iconplay Septimal sixth tone or jubilisma, Erlich's decatonic comma or tritonic diesis[3][6] 7 S
35.70
D77 49 : 48 72 : 24×3 audio speaker iconplay Septimal diesis, slendro diesis or septimal 1/6-tone[3] 7 S
38.05
C23 46 : 45 2×23 : 32×5 audio speaker iconplay Inferior quarter tone,[5] difference between 23:16 & 45:32 23 S
38.71
21/31 21/31 audio speaker iconplay 1 step in 31 equal temperament 31
38.91
C+ 45 : 44 32×5 : 4×11 audio speaker iconplay Undecimal diesis or undecimal fifth tone 11 S
40.00
21/30 21/30 audio speaker iconplay Fifth tone 30
41.06
Ddouble flat 128 : 125 27 : 53 audio speaker iconplay Enharmonic diesis or 5-limit limma, minor diesis,[6] diminished second,[5][6] minor diesis or diesis,[3] 125th subharmonic 5
41.72
D41U7 42 : 41 2×3×7 : 41 audio speaker iconplay Lesser 41-limit fifth tone 41 S
42.75
C41 41 : 40 41 : 23×5 audio speaker iconplay Greater 41-limit fifth tone 41 S
43.83
C13 upside down 40 : 39 23×5 : 3×13 audio speaker iconplay Tridecimal fifth tone 13 S
44.97
C19U13 39 : 38 3×13 : 2×19 audio speaker iconplay Superior quarter-tone,[5] novendecimal fifth tone 19 S
46.17
D37U19double flat- 38 : 37 2×19 : 37 audio speaker iconplay Lesser 37-limit quarter tone 37 S
47.43
C37 37 : 36 37 : 22×32 audio speaker iconplay Greater 37-limit quarter tone 37 S
48.77
C7 upside-down 36 : 35 22×32 : 5×7 audio speaker iconplay Septimal quarter tone, septimal diesis,[3][6] septimal chroma,[2] superior quarter tone[5] 7 S
49.98
246 : 239 3×41 : 239 audio speaker iconplay Just quarter tone[11] 239
50.00
Chalf sharp/Dthree quarter flat 21/24 21/24 audio speaker iconplay Equal-tempered quarter tone 24
50.18
D17 upside down7 35 : 34 5×7 : 2×17 audio speaker iconplay ET quarter-tone approximation,[5] lesser 17-limit quarter tone 17 S
50.72
B7 upside-down++ 59049 : 57344 310 : 213×7 audio speaker iconplay Harrison's comma (10 P5s – 1 H7)[3] 7
51.68
C17 34 : 33 2×17 : 3×11 audio speaker iconplay Greater 17-limit quarter tone 17 S
53.27
C 33 : 32 3×11 : 25 audio speaker iconplay Thirty-third harmonic,[5] undecimal comma, undecimal quarter tone 11 S
54.96
D31U- 32 : 31 25 : 31 audio speaker iconplay Inferior quarter-tone,[5] thirty-first subharmonic 31 S
56.55
B2323+ 529 : 512 232 : 29 audio speaker iconplay Five-hundred-twenty-ninth harmonic 23
56.77
C31 31 : 30 31 : 2×3×5 audio speaker iconplay Greater quarter-tone,[5] difference between 31:16 & 15:8 31 S
58.69
C29U 30 : 29 2×3×5 : 29 audio speaker iconplay Lesser 29-limit quarter tone 29 S
60.75
C297 upside-down 29 : 28 29 : 22×7 audio speaker iconplay Greater 29-limit quarter tone 29 S
62.96
D7- 28 : 27 22×7 : 33 audio speaker iconplay Septimal minor second, small minor second, inferior quarter tone[5] 7 S
63.81
(3 : 2)1/11 31/11 : 21/11 audio speaker iconplay Beta scale step 18.75
65.34
C13 upside down+ 27 : 26 33 : 2×13 audio speaker iconplay Chromatic diesis,[12] tridecimal comma[3] 13 S
66.34
D197 133 : 128 7×19 : 27 audio speaker iconplay One-hundred-thirty-third harmonic 19
66.67
CSims flagged arrow down.svg/CHalf down arrow.png[a] 21/18 21/18 audio speaker iconplay Third tone 18, 36, 72
67.90
D13double flat- 26 : 25 2×13 : 52 audio speaker iconplay Tridecimal third tone, third tone[5] 13 S
70.67
C[2] 25 : 24 52 : 23×3 audio speaker iconplay Just chromatic semitone or minor chroma,[3] lesser chromatic semitone, small (just) semitone[11] or minor second,[4] minor chromatic semitone,[13] or minor semitone,[5] 27-comma meantone chromatic semitone, augmented unison 5 S
73.68
D23U- 24 : 23 23×3 : 23 audio speaker iconplay Lesser 23-limit semitone 23 S
75.00
21/16 23/48 audio speaker iconplay 1 step in 16 equal temperament, 3 steps in 48 16, 48
76.96
C23+ 23 : 22 23 : 2×11 audio speaker iconplay Greater 23-limit semitone 23 S
78.00
(3 : 2)1/9 31/9 : 21/9 audio speaker iconplay Alpha scale step 15.39
79.31
67 : 64 67 : 26 audio speaker iconplay Sixty-seventh harmonic[5] 67
80.54
C7 upside-down- 22 : 21 2×11 : 3×7 audio speaker iconplay Hard semitone,[5] two-fifth tone small semitone 11 S
84.47
D7 21 : 20 3×7 : 22×5 audio speaker iconplay Septimal chromatic semitone, minor semitone[3] 7 S
88.80
C19U 20 : 19 22×5 : 19 audio speaker iconplay Novendecimal augmented unison 19 S
90.22
D−−[2] 256 : 243 28 : 35 audio speaker iconplay Pythagorean minor second or limma,[3][6][11] Pythagorean diatonic semitone, Low Semitone[14] 3
92.18
C+[2] 135 : 128 33×5 : 27 audio speaker iconplay Greater chromatic semitone, chromatic semitone, semitone medius, major chroma or major limma,[3] small limma,[11] major chromatic semitone,[13] limma ascendant[5] 5
93.60
D19- 19 : 18 19 : 2×9 Novendecimal minor secondaudio speaker iconplay 19 S
97.36
D↓↓ 128 : 121 27 : 112 audio speaker iconplay 121st subharmonic,[5][6] undecimal minor second 11
98.95
D17 upside down 18 : 17 2×32 : 17 audio speaker iconplay Just minor semitone, Arabic lute index finger[3] 17 S
100.00
C/D 21/12 21/12 audio speaker iconplay Equal-tempered minor second or semitone 12 M
104.96
C17[2] 17 : 16 17 : 24 audio speaker iconplay Minor diatonic semitone, just major semitone, overtone semitone,[5] 17th harmonic,[3] limma[citation needed] 17 S
111.45
255 (5 : 1)1/25 audio speaker iconplay Studie II interval (compound just major third, 5:1, divided into 25 equal parts) 25
111.73
D-[2] 16 : 15 24 : 3×5 audio speaker iconplay Just minor second,[15] just diatonic semitone, large just semitone or major second,[4] major semitone,[5] limma, minor diatonic semitone,[3] diatonic second[16] semitone,[14] diatonic semitone,[11] 16-comma meantone minor second 5 S
113.69
C++ 2187 : 2048 37 : 211 audio speaker iconplay Apotome[3][11] or Pythagorean major semitone,[6] Pythagorean augmented unison, Pythagorean chromatic semitone, or Pythagorean apotome 3
116.72
(18 : 5)1/19 21/19×32/19 : 51/19 audio speaker iconplay Secor 10.28
119.44
C7 upside-down 15 : 14 3×5 : 2×7 audio speaker iconplay Septimal diatonic semitone, major diatonic semitone,[3] Cowell semitone[5] 7 S
125.00
25/48 25/48 audio speaker iconplay 5 steps in 48 equal temperament 48
128.30
D13 upside down7 14 : 13 2×7 : 13 audio speaker iconplay Lesser tridecimal 2/3-tone[17] 13 S
130.23
C23+ 69 : 64 3×23 : 26 audio speaker iconplay Sixty-ninth harmonic[5] 23
133.24
D 27 : 25 33 : 52 audio speaker iconplay Semitone maximus, minor second, large limma or Bohlen-Pierce small semitone,[3] high semitone,[14] alternate Renaissance half-step,[5] large limma, acute minor second[citation needed] 5
133.33
CHalf up arrow.png/DHalf up arrow.png[a] 21/9 22/18 audio speaker iconplay Two-third tone 9, 18, 36, 72
138.57
D13- 13 : 12 13 : 22×3 audio speaker iconplay Greater tridecimal 2/3-tone,[17] Three-quarter tone[5] 13 S
150.00
Cthree quarter sharp/Dhalf flat 23/24 21/8 audio speaker iconplay Equal-tempered neutral second 8, 24
150.64
D↓[2] 12 : 11 22×3 : 11 audio speaker iconplay 34 tone or Undecimal neutral second,[3][5] trumpet three-quarter tone,[11] middle finger [between frets][14] 11 S
155.14
D7 35 : 32 5×7 : 25 audio speaker iconplay Thirty-fifth harmonic[5] 7
160.90
D−− 800 : 729 25×52 : 36 audio speaker iconplay Grave whole tone,[3] neutral second, grave major second[citation needed] 5
165.00
D[2] 11 : 10 11 : 2×5 audio speaker iconplay Greater undecimal minor/major/neutral second, 4/5-tone[6] or Ptolemy's second[3] 11 S
171.43
21/7 21/7 audio speaker iconplay 1 step in 7 equal temperament 7
175.00
27/48 27/48 audio speaker iconplay 7 steps in 48 equal temperament 48
179.70
71 : 64 71 : 26 audio speaker iconplay Seventy-first harmonic[5] 71
180.45
Edouble flat−−− 65536 : 59049 216 : 310 audio speaker iconplay Pythagorean diminished third,[3][6] Pythagorean minor tone 3
182.40
D-[2] 10 : 9 2×5 : 32 audio speaker iconplay Small just whole tone or major second,[4] minor whole tone,[3][5] lesser whole tone,[16] minor tone,[14] minor second,[11] half-comma meantone major second 5 S
200.00
D 22/12 21/6 audio speaker iconplay Equal-tempered major second 6, 12 M
203.91
D[2] 9 : 8 32 : 23 audio speaker iconplay Pythagorean major second, Large just whole tone or major second[11] (sesquioctavan),[4] tonus, major whole tone,[3][5] greater whole tone,[16] major tone[14] 3 S
215.89
D29 145 : 128 5×29 : 27 audio speaker iconplay Hundred-forty-fifth harmonic 29
223.46
Edouble flat[2] 256 : 225 28 : 32×52 audio speaker iconplay Just diminished third,[16] 225th subharmonic 5
225.00
23/16 29/48 audio speaker iconplay 9 steps in 48 equal temperament 16, 48
227.79
73 : 64 73 : 26 audio speaker iconplay Seventy-third harmonic[5] 73
231.17
D7 upside-down[2] 8 : 7 23 : 7 audio speaker iconplay Septimal major second,[4] septimal whole tone[3][5] 7 S
240.00
21/5 21/5 audio speaker iconplay 1 step in 5 equal temperament 5
247.74
D13 upside down 15 : 13 3×5 : 13 audio speaker iconplay Tridecimal 54 tone[3] 13
250.00
Dhalf sharp/Ethree quarter flat 25/24 25/24 audio speaker iconplay 5 steps in 24 equal temperament 24
251.34
D37 37 : 32 37 : 25 audio speaker iconplay Thirty-seventh harmonic[5] 37
253.08
D 125 : 108 53 : 22×33 audio speaker iconplay Semi-augmented whole tone,[3] semi-augmented second[citation needed] 5
262.37
E↓ 64 : 55 26 : 5×11 audio speaker iconplay 55th subharmonic[5][6] 11
268.80
D2313 299 : 256 13×23 : 28 audio speaker iconplay Two-hundred-ninety-ninth harmonic 23
266.87
E7[2] 7 : 6 7 : 2×3 audio speaker iconplay Septimal minor third[3][4][11] or Sub minor third[14] 7 S
274.58
D[2] 75 : 64 3×52 : 26 audio speaker iconplay Just augmented second,[16] Augmented tone,[14] augmented second[5][13] 5
275.00
211/48 211/48 audio speaker iconplay 11 steps in 48 equal temperament 48
289.21
E13 13 : 11 13 : 11 audio speaker iconplay Tridecimal minor third[3] 13
294.13
E[2] 32 : 27 25 : 33 audio speaker iconplay Pythagorean minor third[3][5][6][14][16] semiditone, or 27th subharmonic 3
297.51
E19[2] 19 : 16 19 : 24 audio speaker iconplay 19th harmonic,[3] 19-limit minor third, overtone minor third[5] 19
300.00
D/E 23/12 21/4 audio speaker iconplay Equal-tempered minor third 4, 12 M
301.85
D7 upside-down- 25 : 21[5] 52 : 3×7 audio speaker iconplay Quasi-equal-tempered minor third, 2nd 7-limit minor third, Bohlen-Pierce second[3][6] 7
310.26
6:5÷(81:80)1/4 22 : 53/4 audio speaker iconplay Quarter-comma meantone minor third M
311.98
(3 : 2)4/9 34/9 : 24/9 audio speaker iconplay Alpha scale minor third 3.85
315.64
E[2] 6 : 5 2×3 : 5 audio speaker iconplay Just minor third,[3][4][5][11][16] minor third,[14] 13-comma meantone minor third 5 M S
317.60
D++ 19683 : 16384 39 : 214 audio speaker iconplay Pythagorean augmented second[3][6] 3
320.14
E7 77 : 64 7×11 : 26 audio speaker iconplay Seventy-seventh harmonic[5] 11
325.00
213/48 213/48 audio speaker iconplay 13 steps in 48 equal temperament 48
336.13
D177 upside-down- 17 : 14 17 : 2×7 audio speaker iconplay Superminor third[18] 17
337.15
E+ 243 : 200 35 : 23×52 audio speaker iconplay Acute minor third[3] 5
342.48
E13 39 : 32 3×13 : 25 audio speaker iconplay Thirty-ninth harmonic[5] 13
342.86
22/7 22/7 audio speaker iconplay 2 steps in 7 equal temperament 7
342.91
E7 upside-down- 128 : 105 27 : 3×5×7 audio speaker iconplay 105th subharmonic,[5] septimal neutral third[6] 7
347.41
E[2] 11 : 9 11 : 32 audio speaker iconplay Undecimal neutral third[3][5] 11
350.00
Dthree quarter sharp/Ehalf flat 27/24 27/24 audio speaker iconplay Equal-tempered neutral third 24
354.55
E+ 27 : 22 33 : 2×11 audio speaker iconplay Zalzal's wosta[6] 12:11 X 9:8[14] 11
359.47
E13 upside down[2] 16 : 13 24 : 13 audio speaker iconplay Tridecimal neutral third[3] 13
364.54
79 : 64 79 : 26 audio speaker iconplay Seventy-ninth harmonic[5] 79
364.81
E− 100 : 81 22×52 : 34 audio speaker iconplay Grave major third[3] 5
375.00
25/16 215/48 audio speaker iconplay 15 steps in 48 equal temperament 16, 48
384.36
F−− 8192 : 6561 213 : 38 audio speaker iconplay Pythagorean diminished fourth,[3][6] Pythagorean 'schismatic' third[5] 3
386.31
E[2] 5 : 4 5 : 22 audio speaker iconplay Just major third,[3][4][5][11][16] major third,[14] quarter-comma meantone major third 5 M S
397.10
E237+ 161 : 128 7×23 : 27 audio speaker iconplay One-hundred-sixty-first harmonic 23
400.00
E 24/12 21/3 audio speaker iconplay Equal-tempered major third 3, 12 M
402.47
E1917 323 : 256 17×19 : 28 audio speaker iconplay Three-hundred-twenty-third harmonic 19
407.82
E+[2] 81 : 64 34 : 26 audio speaker iconplay Pythagorean major third,[3][5][6][14][16] ditone 3
417.51
F7+[2] 14 : 11 2×7 : 11 audio speaker iconplay Undecimal diminished fourth or major third[3] 11
425.00
217/48 217/48 audio speaker iconplay 17 steps in 48 equal temperament 48
427.37
F[2] 32 : 25 25 : 52 audio speaker iconplay Just diminished fourth,[16] diminished fourth,[5][13] 25th subharmonic 5
429.06
E41 41 : 32 41 : 25 audio speaker iconplay Forty-first harmonic[5] 41
435.08
E7 upside-down[2] 9 : 7 32 : 7 audio speaker iconplay Septimal major third,[3][5] Bohlen-Pierce third,[3] Super major Third[14] 7
444.77
F↓ 128 : 99 27 : 9×11 audio speaker iconplay 99th subharmonic[5][6] 11
450.00
Ehalf sharp/Fhalf flat 29/24 29/24 audio speaker iconplay 9 steps in 24 equal temperament 24
450.05
83 : 64 83 : 26 audio speaker iconplay Eighty-third harmonic[5] 83
454.21
F13 13 : 10 13 : 2×5 audio speaker iconplay Tridecimal major third or diminished fourth 13
456.99
E[2] 125 : 96 53 : 25×3 audio speaker iconplay Just augmented third, augmented third[5] 5
462.35
E7 upside-down7 upside-down- 64 : 49 26 : 72 audio speaker iconplay 49th subharmonic[5][6] 7
470.78
F7+[2] 21 : 16 3×7 : 24 audio speaker iconplay Twenty-first harmonic, narrow fourth,[3] septimal fourth,[5] wide augmented third,[citation needed] H7 on G 7
475.00
219/48 219/48 audio speaker iconplay 19 steps in 48 equal temperament 48
478.49
E+ 675 : 512 33×52 : 29 audio speaker iconplay Six-hundred-seventy-fifth harmonic, wide augmented third[3] 5
480.00
22/5 22/5 audio speaker iconplay 2 steps in 5 equal temperament 5
491.27
E17 85 : 64 5×17 : 26 audio speaker iconplay Eighty-fifth harmonic[5] 17
498.04
F[2] 4 : 3 22 : 3 audio speaker iconplay Perfect fourth,[3][5][16] Pythagorean perfect fourth, Just perfect fourth or diatessaron[4] 3 S
500.00
F 25/12 25/12 audio speaker iconplay Equal-tempered perfect fourth 12 M
501.42
F19+ 171 : 128 32×19 : 27 audio speaker iconplay One-hundred-seventy-first harmonic 19
510.51
(3 : 2)8/11 38/11 : 28/11 audio speaker iconplay Beta scale perfect fourth 18.75
511.52
F43 43 : 32 43 : 25 audio speaker iconplay Forty-third harmonic[5] 43
514.29
23/7 23/7 audio speaker iconplay 3 steps in 7 equal temperament 7
519.55
F+[2] 27 : 20 33 : 22×5 audio speaker iconplay 5-limit wolf fourth, acute fourth,[3] imperfect fourth[16] 5
521.51
E+++ 177147 : 131072 311 : 217 audio speaker iconplay Pythagorean augmented third[3][6] (F+ (pitch)) 3
525.00
27/16 221/48 audio speaker iconplay 21 steps in 48 equal temperament 16, 48
531.53
F29+ 87 : 64 3×29 : 26 audio speaker iconplay Eighty-seventh harmonic[5] 29
536.95
F+ 15 : 11 3×5 : 11 audio speaker iconplay Undecimal augmented fourth[3] 11
550.00
Fhalf sharp/Gthree quarter flat 211/24 211/24 audio speaker iconplay 11 steps in 24 equal temperament 24
551.32
F[2] 11 : 8 11 : 23 audio speaker iconplay eleventh harmonic,[5] undecimal tritone,[5] lesser undecimal tritone, undecimal semi-augmented fourth[3] 11
563.38
F13 upside down+ 18 : 13 2×9 : 13 audio speaker iconplay Tridecimal augmented fourth[3] 13
568.72
F[2] 25 : 18 52 : 2×32 audio speaker iconplay Just augmented fourth[3][5] 5
570.88
89 : 64 89 : 26 audio speaker iconplay Eighty-ninth harmonic[5] 89
575.00
223/48 223/48 audio speaker iconplay 23 steps in 48 equal temperament 48
582.51
G7[2] 7 : 5 7 : 5 audio speaker iconplay Lesser septimal tritone, septimal tritone[3][4][5] Huygens' tritone or Bohlen-Pierce fourth,[3] septimal fifth,[11] septimal diminished fifth[19] 7
588.27
G−− 1024 : 729 210 : 36 audio speaker iconplay Pythagorean diminished fifth,[3][6] low Pythagorean tritone[5] 3
590.22
F+[2] 45 : 32 32×5 : 25 audio speaker iconplay Just augmented fourth, just tritone,[4][11] tritone,[6] diatonic tritone,[3] 'augmented' or 'false' fourth,[16] high 5-limit tritone,[5] 16-comma meantone augmented fourth 5
595.03
G1919 361 : 256 192 : 28 audio speaker iconplay Three-hundred-sixty-first harmonic 19
600.00
F/G 26/12 21/2=2 audio speaker iconplay Equal-tempered tritone 2, 12 M
609.35
G137 91 : 64 7×13 : 26 audio speaker iconplay Ninety-first harmonic[5] 13
609.78
G[2] 64 : 45 26 : 32×5 audio speaker iconplay Just tritone,[4] 2nd tritone,[6] 'false' fifth,[16] diminished fifth,[13] low 5-limit tritone,[5] 45th subharmonic 5
611.73
F++ 729 : 512 36 : 29 audio speaker iconplay Pythagorean tritone,[3][6] Pythagorean augmented fourth, high Pythagorean tritone[5] 3
617.49
F7 upside-down[2] 10 : 7 2×5 : 7 audio speaker iconplay Greater septimal tritone, septimal tritone,[4][5] Euler's tritone[3] 7
625.00
225/48 225/48 audio speaker iconplay 25 steps in 48 equal temperament 48
628.27
F23+ 23 : 16 23 : 24 audio speaker iconplay Twenty-third harmonic,[5] classic diminished fifth[citation needed] 23
631.28
G[2] 36 : 25 22×32 : 52 audio speaker iconplay Just diminished fifth[5] 5
646.99
F31+ 93 : 64 3×31 : 26 audio speaker iconplay Ninety-third harmonic[5] 31
648.68
G↓[2] 16 : 11 24 : 11 audio speaker iconplay ` undecimal semi-diminished fifth[3] 11
650.00
Fthree quarter sharp/Ghalf flat 213/24 213/24 audio speaker iconplay 13 steps in 24 equal temperament 24
665.51
G43U 47 : 32 47 : 25 audio speaker iconplay Forty-seventh harmonic[5] 47
675.00
29/16 227/48 audio speaker iconplay 27 steps in 48 equal temperament 16, 48
678.49
Adouble flat−−− 262144 : 177147 218 : 311 audio speaker iconplay Pythagorean diminished sixth[3][6] 3
680.45
G− 40 : 27 23×5 : 33 audio speaker iconplay 5-limit wolf fifth,[5] or diminished sixth, grave fifth,[3][6][11] imperfect fifth,[16] 5
683.83
G19 95 : 64 5×19 : 26 audio speaker iconplay Ninety-fifth harmonic[5] 19
684.82
E232323double sharp++ 12167 : 8192 233 : 213 audio speaker iconplay 12167th harmonic 23
685.71
24/7 : 1 audio speaker iconplay 4 steps in 7 equal temperament
691.20
3:2÷(81:80)1/2 2×51/2 : 3 audio speaker iconplay Half-comma meantone perfect fifth M
694.79
3:2÷(81:80)1/3 21/3×51/3 : 31/3 audio speaker iconplay 13-comma meantone perfect fifth M
695.81
3:2÷(81:80)2/7 21/7×52/7 : 31/7 audio speaker iconplay 27-comma meantone perfect fifth M
696.58
3:2÷(81:80)1/4 51/4 audio speaker iconplay Quarter-comma meantone perfect fifth M
697.65
3:2÷(81:80)1/5 31/5×51/5 : 21/5 audio speaker iconplay 15-comma meantone perfect fifth M
698.37
3:2÷(81:80)1/6 31/3×51/6 : 21/3 audio speaker iconplay 16-comma meantone perfect fifth M
700.00
G 27/12 27/12 audio speaker iconplay Equal-tempered perfect fifth 12 M
701.89
231/53 231/53 audio speaker iconplay 53-TET perfect fifth 53
701.96
G[2] 3 : 2 3 : 2 audio speaker iconplay Perfect fifth,[3][5][16] Pythagorean perfect fifth, Just perfect fifth or diapente,[4] fifth,[14] Just fifth[11] 3 S
702.44
224/41 224/41 audio speaker iconplay 41-TET perfect fifth 41
703.45
217/29 217/29 audio speaker iconplay 29-TET perfect fifth 29
719.90
97 : 64 97 : 26 audio speaker iconplay Ninety-seventh harmonic[5] 97
720.00
23/5 : 1 audio speaker iconplay 3 steps in 5 equal temperament 5
721.51
Adouble flat 1024 : 675 210 : 33×52 audio speaker iconplay Narrow diminished sixth[3] 5
725.00
229/48 229/48 audio speaker iconplay 29 steps in 48 equal temperament 48
729.22
G7 upside-down- 32 : 21 24 : 3×7 audio speaker iconplay 21st subharmonic,[5][6] septimal diminished sixth 7
733.23
F2317double sharp+ 391 : 256 17×23 : 28 audio speaker iconplay Three-hundred-ninety-first harmonic 23
737.65
A77+ 49 : 32 7×7 : 25 audio speaker iconplay Forty-ninth harmonic[5] 7
743.01
Adouble flat 192 : 125 26×3 : 53 audio speaker iconplay Classic diminished sixth[3] 5
750.00
Ghalf sharp/Athree quarter flat 215/24 215/24 audio speaker iconplay 15 steps in 24 equal temperament 24
755.23
G 99 : 64 32×11 : 26 audio speaker iconplay Ninety-ninth harmonic[5] 11
764.92
A7[2] 14 : 9 2×7 : 32 audio speaker iconplay Septimal minor sixth[3][5] 7
772.63
G 25 : 16 52 : 24 audio speaker iconplay Just augmented fifth[5][16]
775.00
231/48 231/48 audio speaker iconplay 31 steps in 48 equal temperament 48
781.79
π : 2 audio speaker iconplay Wallis product
782.49
G7 upside-down-[2] 11 : 7 11 : 7 audio speaker iconplay Undecimal minor sixth,[5] undecimal augmented fifth,[3] Fibonacci numbers 11
789.85
101 : 64 101 : 26 audio speaker iconplay Hundred-first harmonic[5] 101
792.18
A[2] 128 : 81 27 : 34 audio speaker iconplay Pythagorean minor sixth,[3][5][6] 81st subharmonic 3
798.40
A297+ 203 : 128 7×29 : 27 audio speaker iconplay Two-hundred-third harmonic 29
800.00
G/A 28/12 22/3 audio speaker iconplay Equal-tempered minor sixth 3, 12 M
806.91
G17 51 : 32 3×17 : 25 audio speaker iconplay Fifty-first harmonic[5] 17
813.69
A[2] 8 : 5 23 : 5 audio speaker iconplay Just minor sixth[3][4][11][16] 5
815.64
G++ 6561 : 4096 38 : 212 audio speaker iconplay Pythagorean augmented fifth,[3][6] Pythagorean 'schismatic' sixth[5] 3
823.80
103 : 64 103 : 26 audio speaker iconplay Hundred-third harmonic[5] 103
825.00
211/16 233/48 audio speaker iconplay 33 steps in 48 equal temperament 16, 48
832.18
G23+ 207 : 128 32×23 : 27 audio speaker iconplay Two-hundred-seventh harmonic 23
833.09
(51/2+1)/2 φ : 1 audio speaker iconplay Golden ratio (833 cents scale)
835.19
A+ 81 : 50 34 : 2×52 audio speaker iconplay Acute minor sixth[3] 5
840.53
A13[2] 13 : 8 13 : 23 audio speaker iconplay Tridecimal neutral sixth,[3] overtone sixth,[5] thirteenth harmonic 13
848.83
A19 209 : 128 11×19 : 27 audio speaker iconplay Two-hundred-ninth harmonic 19
850.00
Gthree quarter sharp/Ahalf flat 217/24 217/24 audio speaker iconplay Equal-tempered neutral sixth 24
852.59
A↓+[2] 18 : 11 2×32 : 11 audio speaker iconplay Undecimal neutral sixth,[3][5] Zalzal's neutral sixth 11
857.09
A7+ 105 : 64 3×5×7 : 26 audio speaker iconplay Hundred-fifth harmonic[5] 7
857.14
25/7 25/7 audio speaker iconplay 5 steps in 7 equal temperament 7
862.85
A− 400 : 243 24×52 : 35 audio speaker iconplay Grave major sixth[3] 5
873.50
A43U 53 : 32 53 : 25 audio speaker iconplay Fifty-third harmonic[5] 53
875.00
235/48 235/48 audio speaker iconplay 35 steps in 48 equal temperament 48
879.86
A↓7 upside-down 128 : 77 27 : 7×11 audio speaker iconplay 77th subharmonic[5][6] 11
882.40
Bdouble flat−−− 32768 : 19683 215 : 39 audio speaker iconplay Pythagorean diminished seventh[3][6] 3
884.36
A[2] 5 : 3 5 : 3 audio speaker iconplay Just major sixth,[3][4][5][11][16] Bohlen-Pierce sixth,[3] 13-comma meantone major sixth 5 M
889.76
107 : 64 107 : 26 audio speaker iconplay Hundred-seventh harmonic[5] 107
892.54
B191919double flat 6859 : 4096 193 : 212 audio speaker iconplay 6859th harmonic 19
900.00
A 29/12 23/4 audio speaker iconplay Equal-tempered major sixth 4, 12 M
902.49
A19U 32 : 19 25 : 19 audio speaker iconplay 19th subharmonic[5][6] 19
905.87
A+[2] 27 : 16 33 : 24 audio speaker iconplay Pythagorean major sixth[3][5][11][16] 3
921.82
109 : 64 109 : 26 audio speaker iconplay Hundred-ninth harmonic[5] 109
925.00
237/48 237/48 audio speaker iconplay 37 steps in 48 equal temperament 48
925.42
Bdouble flat[2] 128 : 75 27 : 3×52 audio speaker iconplay Just diminished seventh,[16] diminished seventh,[5][13] 75th subharmonic 5
925.79
A2319+ 437 : 256 19×23 : 28 audio speaker iconplay Four-hundred-thirty-seventh harmonic 23
933.13
A7 upside-down[2] 12 : 7 22×3 : 7 audio speaker iconplay Septimal major sixth[3][4][5] 7
937.63
A 55 : 32 5×11 : 25 audio speaker iconplay Fifty-fifth harmonic[5][20] 11
950.00
Ahalf sharp/Bthree quarter flat 219/24 219/24 audio speaker iconplay 19 steps in 24 equal temperament 24
953.30
A37+ 111 : 64 3×37 : 26 audio speaker iconplay Hundred-eleventh harmonic[5] 37
955.03
A[2] 125 : 72 53 : 23×32 audio speaker iconplay Just augmented sixth[5] 5
957.21
(3 : 2)15/11 315/11 : 215/11 audio speaker iconplay 15 steps in Beta scale 18.75
960.00
24/5 24/5 audio speaker iconplay 4 steps in 5 equal temperament 5
968.83
B7[2] 7 : 4 7 : 22 audio speaker iconplay Septimal minor seventh,[4][5][11] harmonic seventh,[3][11] augmented sixth[citation needed] 7
975.00
213/16 239/48 audio speaker iconplay 39 steps in 48 equal temperament 16, 48
976.54
A+[2] 225 : 128 32×52 : 27 audio speaker iconplay Just augmented sixth[16] 5
984.21
113 : 64 113 : 26 audio speaker iconplay Hundred-thirteenth harmonic[5] 113
996.09
B[2] 16 : 9 24 : 32 audio speaker iconplay Pythagorean minor seventh,[3] Small just minor seventh,[4] lesser minor seventh,[16] just minor seventh,[11] Pythagorean small minor seventh[5] 3
999.47
B19 57 : 32 3×19 : 25 audio speaker iconplay Fifty-seventh harmonic[5] 19
1000.00
A/B 210/12 25/6 audio speaker iconplay Equal-tempered minor seventh 6, 12 M
1014.59
A23+ 115 : 64 5×23 : 26 audio speaker iconplay Hundred-fifteenth harmonic[5] 23
1017.60
B[2] 9 : 5 32 : 5 audio speaker iconplay Greater just minor seventh,[16] large just minor seventh,[4][5] Bohlen-Pierce seventh[3] 5
1019.55
A+++ 59049 : 32768 310 : 215 audio speaker iconplay Pythagorean augmented sixth[3][6] 3
1025.00
241/48 241/48 audio speaker iconplay 41 steps in 48 equal temperament 48
1028.57
26/7 26/7 audio speaker iconplay 6 steps in 7 equal temperament 7
1029.58
B29 29 : 16 29 : 24 audio speaker iconplay Twenty-ninth harmonic,[5] minor seventh[citation needed] 29
1035.00
B↓[2] 20 : 11 22×5 : 11 audio speaker iconplay Lesser undecimal neutral seventh, large minor seventh[3] 11
1039.10
B+ 729 : 400 36 : 24×52 audio speaker iconplay Acute minor seventh[3] 5
1044.44
B13 117 : 64 32×13 : 26 audio speaker iconplay Hundred-seventeenth harmonic[5] 13
1044.86
B7 upside-down- 64 : 35 26 : 5×7 audio speaker iconplay 35th subharmonic,[5] septimal neutral seventh[6] 7
1049.36
B[2] 11 : 6 11 : 2×3 audio speaker iconplay 214-tone or Undecimal neutral seventh,[3] undecimal 'median' seventh[5] 11
1050.00
Athree quarter sharp/Bhalf flat 221/24 27/8 audio speaker iconplay Equal-tempered neutral seventh 8, 24
1059.17
59 : 32 59 : 25 audio speaker iconplay Fifty-ninth harmonic[5] 59
1066.76
B− 50 : 27 2×52 : 33 audio speaker iconplay Grave major seventh[3] 5
1071.70
B137 upside-down- 13 : 7 13 : 7 audio speaker iconplay Tridecimal neutral seventh[21] 13
1073.78
B717 119 : 64 7×17 : 26 audio speaker iconplay Hundred-nineteenth harmonic[5] 17
1075.00
243/48 243/48 audio speaker iconplay 43 steps in 48 equal temperament 48
1086.31
C′−− 4096 : 2187 212 : 37 audio speaker iconplay Pythagorean diminished octave[3][6] 3
1088.27
B[2] 15 : 8 3×5 : 23 audio speaker iconplay Just major seventh,[3][5][11][16] small just major seventh,[4] 16-comma meantone major seventh 5
1095.04
C17 upside down 32 : 17 25 : 17 audio speaker iconplay 17th subharmonic[5][6] 17
1100.00
B 211/12 211/12 audio speaker iconplay Equal-tempered major seventh 12 M
1102.64
B- 121 : 64 112 : 26 audio speaker iconplay Hundred-twenty-first harmonic[5] 11
1107.82
C′ 256 : 135 28 : 33×5 audio speaker iconplay Octave − major chroma,[3] 135th subharmonic, narrow diminished octave[citation needed] 5
1109.78
B+[2] 243 : 128 35 : 27 audio speaker iconplay Pythagorean major seventh[3][5][6][11] 3
1116.88
61 : 32 61 : 25 audio speaker iconplay Sixty-first harmonic[5] 61
1125.00
215/16 245/48 audio speaker iconplay 45 steps in 48 equal temperament 16, 48
1129.33
C′[2] 48 : 25 24×3 : 52 audio speaker iconplay Classic diminished octave,[3][6] large just major seventh[4] 5
1131.02
B41 123 : 64 3×41 : 26 audio speaker iconplay Hundred-twenty-third harmonic[5] 41
1137.04
B7 upside-down 27 : 14 33 : 2×7 audio speaker iconplay Septimal major seventh[5] 7
1138.04
C1913 247 : 128 13×19 : 27 audio speaker iconplay Two-hundred-forty-seventh harmonic 19
1145.04
B31 31 : 16 31 : 24 audio speaker iconplay Thirty-first harmonic,[5] augmented seventh[citation needed] 31
1146.73
C↓ 64 : 33 26 : 3×11 audio speaker iconplay 33rd subharmonic[6] 11
1150.00
Bhalf sharp/Chalf flat 223/24 223/24 audio speaker iconplay 23 steps in 24 equal temperament 24
1151.23
C7 35 : 18 5×7 : 2×32 audio speaker iconplay Septimal supermajor seventh, septimal quarter tone inverted 7
1158.94
B[2] 125 : 64 53 : 26 audio speaker iconplay Just augmented seventh,[5] 125th harmonic 5
1172.74
C7+ 63 : 32 32×7 : 25 audio speaker iconplay Sixty-third harmonic[5] 7
1175.00
247/48 247/48 audio speaker iconplay 47 steps in 48 equal temperament 48
1178.49
C′− 160 : 81 25×5 : 34 audio speaker iconplay Octave − syntonic comma,[3] semi-diminished octave[citation needed] 5
1179.59
B23 253 : 128 11×23 : 27 audio speaker iconplay Two-hundred-fifty-third harmonic[5] 23
1186.42
127 : 64 127 : 26 audio speaker iconplay Hundred-twenty-seventh harmonic[5] 127
1200.00
C′ 2 : 1 2 : 1 audio speaker iconplay Octave[3][11] or diapason[4] 1, 12 3 M S

See also[edit]

Notes[edit]

References[edit]

  1. ^ a b Fox, Christopher (2003). "Microtones and Microtonalities", Contemporary Music Review, v. 22, pt. 1–2. (Abingdon, Oxfordshire, UK: Routledge): p. 13.
  2. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg bh bi Fonville, John. 1991. "Ben Johnston's Extended Just Intonation: A Guide for Interpreters". Perspectives of New Music 29, no. 2 (Summer): 106–137.
  3. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg bh bi bj bk bl bm bn bo bp bq br bs bt bu bv bw bx by bz ca cb cc cd ce cf cg ch ci cj ck cl cm cn co cp cq cr cs ct cu cv cw cx cy cz da db dc dd de df dg dh di "List of intervals", Huygens-Fokker Foundation. The Foundation uses "classic" to indicate "just" or leaves off any adjective, as in "major sixth".
  4. ^ a b c d e f g h i j k l m n o p q r s t u v w x Partch, Harry (1979). Genesis of a Music. pp. 68–69. ISBN 978-0-306-80106-8.
  5. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg bh bi bj bk bl bm bn bo bp bq br bs bt bu bv bw bx by bz ca cb cc cd ce cf cg ch ci cj ck cl cm cn co cp cq cr cs ct cu cv cw cx cy cz da db dc dd de df dg dh di dj dk dl dm dn do dp dq dr ds dt du dv dw dx dy dz "Anatomy of an Octave", Kyle Gann (1998). Gann leaves off "just" but includes "5-limit". He uses "median" for "neutral".
  6. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay Haluška, Ján (2003). The Mathematical Theory of Tone Systems, pp. xxv–xxix. ISBN 978-0-8247-4714-5.
  7. ^ Ellis, Alexander J.; Hipkins, Alfred J. (1884). "Tonometrical Observations on Some Existing Non-Harmonic Musical Scales". Proceedings of the Royal Society of London. 37 (232–234): 368–385. doi:10.1098/rspl.1884.0041. JSTOR 114325. S2CID 122407786.
  8. ^ "Logarithmic Interval Measures", Huygens-Fokker Foundation. Accessed 2015-06-06.
  9. ^ "Orwell Temperaments", Xenharmony.org.
  10. ^ a b Partch 1979, p. 70
  11. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab Alexander John Ellis (March 1885). On the musical scales of various nations, p. 488. Journal of the Society of Arts, vol. XXXII, no. 1688
  12. ^ William Smythe Babcock Mathews (1895). Pronouncing Dictionary and Condensed Encyclopedia of Musical Terms, p. 13. ISBN 1-112-44188-3.
  13. ^ a b c d e f Anger, Joseph Humfrey (1912). A Treatise on Harmony, with Exercises, Volume 3, pp. xiv–xv. W. Tyrrell.
  14. ^ a b c d e f g h i j k l m n o Hermann Ludwig F. von Helmholtz (Alexander John Ellis, trans.) (1875). "Additions by the translator", On the sensations of tone as a physiological basis for the theory of music, p. 644. [ISBN unspecified]
  15. ^ A. R. Meuss (2004). Intervals, Scales, Tones and the Concert Pitch C. Temple Lodge Publishing. p. 15. ISBN 1902636465.
  16. ^ a b c d e f g h i j k l m n o p q r s t u v w x y Paul, Oscar (1885). A Manual of Harmony for Use in Music-schools and Seminaries and for Self-instruction, p. 165. Theodore Baker, trans. G. Schirmer. Paul uses "natural" for "just".
  17. ^ a b "13th-harmonic", 31et.com.
  18. ^ Brabner, John H. F. (1884). The National Encyclopaedia, vol. 13, p. 182. London. [ISBN unspecified]
  19. ^ Sabat, Marc and von Schweinitz, Wolfgang (2004). "The Extended Helmholtz-Ellis JI Pitch Notation" [PDF], NewMusicBox. Accessed: 15 March 2014.
  20. ^ Hermann L. F. von Helmholtz (2007). On the Sensations of Tone, p. 456. ISBN 978-1-60206-639-7.
  21. ^ "Gallery of Just Intervals", Xenharmonic Wiki.

External links[edit]