User:Holger Stoltenberg/sandbox: Difference between revisions

sign of intonation interval
section intonation edited
Line 73: Line 73:
::*''a deviating pitch referenced by the same key descriptor''
::*''a deviating pitch referenced by the same key descriptor''


Typically, intonation is a small interval between -50 ¢ and +50 ¢ although larger values are allowed. In our model, the common tonic of all modes of the overtone scale has an intonation of 0 ¢ by definition.
Typically, intonation is a small interval between -50 ¢ and +50 ¢ alhough larger values are allowed. In our model, the common tonic of all modes of the overtone scale has an intonation of 0 ¢ by definition.


According to this definition'','' the upper pitch of the just major third above the tonic (Mode 4, see  
According to this definition'','' the upper pitch of the just major third above the tonic (Mode 4, see [[#example01|Example 1]]) has an intonation interval of '''-14 ¢''', which represents the ''distance '''from''' the nearest vertical 12edo line''. Note that we generally measure intonation beginning at the nearest 12edo pitch. This results in a minus sign for the intonation of the upper note of the just third.
[[#example01|Example 1]]) has an intonation interval of '''-14 ¢''', which represents the ''distance '''from''' the nearest vertical 12edo line''. (Note that we generally measure intonation beginning at the nearest 12edo pitch. This results in a minus sign for the intonation of the upper note of the just third.) The signed intonation interval represents the amount of retuning required when a commercial sound module is initially tuned to 12edo.
 
The unusual definition of the sign is based on a technical point of view and takes into account the plan to build a real instrument. The signed intonation interval represents the amount of retuning required when a commercially available sound module is factory tuned to 12tet.


==== Calculate intonation ====
==== Calculate intonation ====