I-Tetrachord |

I-tetraxordon yesiGreki, ekhanyayo. – izintambo ezine, zisuka ku-tetra, emagameni ambaxa – ezine kanye ne- xordn – intambo

Isilinganiso sezinyathelo ezine kububanzi besine esiphelele (isb, g – a – h – c). Isikhundla esikhethekile sika-T. phakathi kwe-monodich. izakhiwo ze-modal zinqunywa ukusebenzisana kwezici eziyinhloko ze-2 zokuguquguquka - okuqondile (okuhlotshaniswa nokunyakaza okuhambisana namathoni esikali esivela ku-stand) kanye ne-harmonic (ngokulandelana - ngokuphikiswa kongwaqa kanye nobudlelwano obungahambisani). Iqhaza likangwaqa njengomlawuli wokunyakaza komculo waqala ukuthola ongwaqa omncane kakhulu - owesine, ungwaqa "wokuqala" (Gaudentius; bheka uJanus C., "Musici scriptores graeci", p. 338). Ngenxa yalokhu, i-T. (hhayi i-octachord ne-pentachord) iba yiyona eyinhloko ngaphambi kwezinye izikali. iseli yesistimu ye-modal. Injalo indima kaT. kwezinye isiGreki. umculo. Amathoni onqenqema ongwaqa akha umnyombo we-T. ("fixed" - estotes, "gestuts") ama-abutments kuwo, futhi amaselula (xinoumenoi - "kinemens") angashintsha, akhe ngaphakathi kwezinyathelo ezi-4 ze-decomp. izilinganiso ze-diatonic, i-chromatic kanye ne-anharmonic. ukubeletha (bheka izindlela zamaGreki Asendulo). Ukuhlanganiswa kwezigqi komunye nomunye kwaholela ekuveleni kwezakhiwo ze-modal eziyinkimbinkimbi (okubaluleke kakhulu phakathi kwazo izindlela ze-octave, okuthiwa "ama-harmonies").

Wed-century. uhlelo lwe-modal, ngokungafani nesiGreki, njengelona oluyinhloko. amamodeli awanayo i-T., kodwa izakhiwo eziningi ze-polyphonic - imodi ye-octave, i-guidon hexachord. Nokho, indima ka-T. ihlala ibaluleke kakhulu kubo. Ngakho, ingqikithi yamafayineli ezindlela zenkathi ephakathi yakha i-T. DEFG (= defg ohlelweni lwesimanje lokuphawula); ngaphakathi kohlaka lwemodi ye-octave, i-T. ihlala iyinhloko. iseli yesakhiwo.

I-hexachord ye-Guidon iwukubhanqamula kwawo womathathu ama-dec. ngokuya ngesikhawu se-diatonic. T.

Ekwakhekeni kwezikali isici sesiRashiya. nar. imiculo, T. yento eyodwa noma enye ukwakheka kwesikhawu ingenye yezakhi ezibaluleke kakhulu. Kwamanye amasampuli emiculo yakudala kakhulu, isikali sengoma silinganiselwe ku-T. (bona isistimu yomsindo). Isakhiwo sesikali sansuku zonke, esakhiwe ngama-trichords ethoni enesikhawu sesine phakathi kwemisindo ehlala endaweni efanayo kuma-trichords aseduze, sibonisa isimiso esingeyona i-octave futhi singamelwa njengeketango lama-tetrachords ethoni-ithoni-semitone (bona i-Perfect uhlelo).

References: Janus S., Musici scriptores graeci, Lpz., 1895, reprografischer Nachdruck, Hildesheim, 1962; Musica enchiriadis, v kn.: Gerbert M., Scriptores ecclesiastici de musica sacra ikakhulukazi, t. 1, St. Blasien, 1784, reprogralischer Nachdruck, Hildesheim, 1963.

Yu. N. Kholopov