97.5cET is an equal-step tuning with steps of 97.5 cents (or each 13th step of 160edo). This system doesn't contain good approximations of fourth (4/3), fifths 3/2, octave 2/1, major ninth (nonet) 9/4, eleventh 8/3, and tritave 3/1 which makes it quite "atonal" and xenharmonic (but nevertheless harmonic in its way, see #Music).
Approximation of harmonics in 1ed97.5c
| Harmonic
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
| Error
|
Absolute (¢)
|
-30.0
|
+48.0
|
+37.5
|
+41.2
|
+18.0
|
+43.7
|
+7.5
|
-1.4
|
+11.2
|
+41.2
|
-12.0
|
| Relative (%)
|
-30.8
|
+49.3
|
+38.5
|
+42.2
|
+18.5
|
+44.8
|
+7.7
|
-1.4
|
+11.5
|
+42.2
|
-12.3
|
| Step
|
12
|
20
|
25
|
29
|
32
|
35
|
37
|
39
|
41
|
43
|
44
|
Intervals
| Steps
|
Cents
|
| 1 |
97.5
|
| 2 |
195.0
|
| 3 |
292.5
|
| 4 |
390.0
|
| 5 |
487.5
|
| 6 |
585.0
|
| 7 |
682.5
|
| 8 |
780.0
|
| 9 |
877.5
|
| 10 |
975.0
|
| 11 |
1072.5
|
| 12 |
1170.0
|
| 13 |
1267.5
|
| 14 |
1365.0
|
| 15 |
1462.5
|
| 16 |
1560.0
|
| 17 |
1657.5
|
| 18 |
1755.0
|
| 19 |
1852.5
|
| 20 |
1950.0
|
Music