Nick Vuci's Fundamentals of Xen: Difference between revisions
No edit summary |
No edit summary |
||
| Line 28: | Line 28: | ||
=== Subharmonic Series === | === Subharmonic Series === | ||
Let’s take a step back. You know about the harmonic series, sometimes called the overtone series, since harmony results from the alignment of partials. Now we have to introduce the second-to-last fundamental idea of JI, and that is the subharmonic (or undertone) series. if we go to scale workshop and choose 1 as the lowest number and 8 as the highest, we get this scale: 2/1, 3/1, 4/1, 5/1, 6/1, 7/1, 8/1. | Let’s take a step back. You know about the harmonic series, sometimes called the overtone series, since harmony results from the alignment of partials. Now we have to introduce the second-to-last fundamental idea of JI, and that is the subharmonic (or undertone) series. if we go to scale workshop and choose 1 as the lowest number and 8 as the highest, we get this scale: 2/1, 3/1, 4/1, 5/1, 6/1, 7/1, 8/1. Note the scale shape: | ||
[[File:Harmonic series 2-8.png|thumb|Harmonic Series segment 2-8|none]] | [[File:Harmonic series 2-8.png|thumb|Harmonic Series segment 2-8|none]] | ||
As we go up the scale, intervals get smaller and smaller. The subharmonic series is the Mathematical opposite of this, and the same 1/8 range gives us this undertone series segment: 8/7, 8/6, 8/5, 8/4, 8/3, 8/2, 8/1. It’s important to know that although we’re calling this the undertone series, the undertone series does not have a physical acoustic basis. | |||
[[File:Subharmonic series 7-1.png|thumb|Subharmonic Series segment 7-1|none]] | [[File:Subharmonic series 7-1.png|thumb|Subharmonic Series segment 7-1|none]] | ||
Now remember how I said 4:5:6 is the major triad? Well, the subharmonic version is the minor chord: 8/6, 8/5, 8/4 or 1/(6:5:4). This means 4:5:6 and 1/(6:5:4) are Mathematical inversions for each other, or the ''otonal'' and the ''utonal'' versions (for overtone and undertone). | Now remember how I said 4:5:6 is the major triad? Well, the subharmonic version is the minor chord: 8/6, 8/5, 8/4 or 1/(6:5:4). This means 4:5:6 and 1/(6:5:4) are Mathematical inversions for each other, or the ''otonal'' and the ''utonal'' versions (for overtone and undertone). | ||