Johnston–Copper notation: Difference between revisions
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When the music demands a note to be tuned differently than the 'basis' then special accidentals are used: an altered sharp sign, an altered flat sign, two altered natural signs (up and down) and two neutral signs (up and down). In Johnston-Copper Notation each such change is exactly a comma, the specific comma indicated by the ratio 81/80 and often called a [[Syntonic comma]] . | When the music demands a note to be tuned differently than the 'basis' then special accidentals are used: an altered sharp sign, an altered flat sign, two altered natural signs (up and down) and two neutral signs (up and down). In Johnston-Copper Notation each such change is exactly a comma, the specific comma indicated by the ratio 81/80 and often called a [[Syntonic comma]] . | ||
[[File:Copper String Quartet -4 .png|thumb|System from String Quartet #4 by William Copper]] | |||
An example from Johnston shows the use of a form of a 'neutral' sign. [[Johnston Quartet 4 -01]] | [[File:Johnston Q401.png|thumb|System from String Quartet #4 by Ben Johnston]] | ||
An example from Johnston shows the use of a form of a 'neutral' sign. [[Johnston Quartet 4 -01]] and an example from Copper shows the same usage with a somewhat altered symbol. | |||