Lambeth chords
A lambeth chord is an essentially tempered dyadic chord which is tempered by 1573/1568, the lambeth comma.
The lambeth triad consists of a stack of two 14/11's followed by 16/13:
- 1-14/11-13/8 with steps 14/11-14/11-16/13.
This can be extended to tetrads as
- 1-13/11-14/11-13/8 with steps 13/11-14/13-14/11-16/13,
and its inversion,
as well as
and its inversion,
- 1-14/11-13/8-13/7 with steps 14/11-14/11-8/7-14/13.
Equal temperaments with these chords include 26, 29, 31, 43, 46, 68, 72, 80, 94, 103, 111, 118f, 140, 183, 212, and 323, with 323edo giving the optimal patent val.