Rank 3 scale: Difference between revisions
mNo edit summary |
I > we |
||
| Line 10: | Line 10: | ||
MOS scales consist of ''strict MOS'' and ''Multi-MOS'' scales. | MOS scales consist of ''strict MOS'' and ''Multi-MOS'' scales. | ||
Strict MOS scales are the MOS scales that possess ''Myhill’s property'', in which all generic intervals come in 2 sizes, and are also known as ''well-formed (WF)'' scales. The two sizes of each interval class in a WF or strict MOS scale differ by the ''chroma'' – the difference between the large and small steps of the scale. | Strict MOS scales are the MOS scales that possess ''Myhill’s property'', in which all generic intervals come in 2 sizes, and are also known as ''well-formed (WF)'' scales. The two sizes of each interval class in a WF or strict MOS scale differ by the ''chroma'' – the difference between the large and small steps of the scale. We will refer to these scales as WF scales for the remainder of this page. | ||
''Multi-MOS'' scales are MOS scales that are multiple periods of a WF scale. The interval class represented by any multiple of a period of a WF scale comes in only a single size, hence multi-MOS scales do not possess Myhill’s property. | ''Multi-MOS'' scales are MOS scales that are multiple periods of a WF scale. The interval class represented by any multiple of a period of a WF scale comes in only a single size, hence multi-MOS scales do not possess Myhill’s property. | ||