Tertia |

kusuka ku-lat. tertia - okwesithathu

1) Isikhawu kuvolumu yezinyathelo ezintathu ze-diatonic. isikali; kuboniswe ngenombolo 3. Zihlukile: T. enkulu (b. 3), equkethe amathoni angu-2; encane T. (m. 3), equkethe 1^1/2 amathoni; ukwanda T. (sw. 3) - 2^1/2 amathoni; kuncishiswe i-T. (d. 3) - ithoni engu-1. T. ingeyenombolo yezikhawu ezilula ezingadluli i-octave. Ezinkulu nezincane T. ziyi-diatonic. izikhawu; ziphenduka zibe izingxenye zesithupha ezincane nezinkulu, ngokulandelana. Ukwenyuka nokunciphisa i-T. - izikhawu ze-chromatic; ziphenduka zibe izingxenye zesithupha ezinciphile nezangeziwe, ngokulandelana.

I-T. enkulu nencane iyingxenye yesikali semvelo: i-T. enkulu yakhiwa phakathi kwe-overtones yesine neyesihlanu (4:5) (lokho okubizwa ngokuthi i-T. ehlanzekile), i-T encane - phakathi kwesihlanu nesithupha (5: 6) amathoni. I-coefficient yesikhawu ye-T. enkulu nencane yesistimu ye-Pythagorean ingu-64/81 kanye no-27/32, ngokulandelanayo? Esikalini esipholile, ithoni enkulu ilingana no-1/3, futhi ithoni encane ingu-1/4 we-octave. T. isikhathi eside babengabhekwa njengongwaqa, kuphela ekhulwini le-13. ungwaqa wezingxenye ezintathu (concordantia imperfecta) uqashelwa emibhalweni kaJohannes de Garlandia noFranco waseCologne.

2) Izinga lesithathu lesikali se-diatonic.

3) Umsindo we-Tertsovy (ithoni) u-triad, i-chord yesikhombisa kanye ne-non-chord.

VA Vakhromeev