Tetrachord |

Greek tetraxordon, lit. – tambo ina, kubva kutetra, mumashoko akaumbwa - ina uye xordn - tambo

Chikero chechina-nhanho muhuwandu hwechina yakakwana (semuenzaniso, g - a - h - c). Nzvimbo yakakosha yeT. pakati pemonodich. modal structures inotarirwa nekudyidzana kwe2 primary factor of modulation - linear (inobatanidzwa nekufamba pamwe chete nematoni echiyero kubva pachigadziko) uye harmonic (zvichienderana - nekupikisa kwehukama hwekonsonanti uye dissonant). Basa rekonsonanti semutongi wekufamba kwe melodic yakatanga kuwana yakamanikana yemakonzonenzi - yechina, iyo "yekutanga" consonance (Gaudentius; ona Janus C., "Musici scriptores graeci", p. 338). Kuvonga kune izvi, T. (uye kwete octachord uye pentachord) inova iyo huru pamberi pezvimwe zviyero. sero re modal system. Ndiro basa raT. mune chimwe chiGiriki. music. Iro consonant edge tones iyo inoumba nheyo yeT. ("fixed" - estotes, "gestuts") ndiyo inoputika mukati maro, uye nharembozha (xinoumenoi - "kinemens") inogona kuchinja, ichiumba mukati mematanho mana decomp. diatonic, chromatic scales uye anharmonic. kuzvara (ona Ancient Greek modes). Iko kusanganiswa kwemhanzi kune mumwe nemumwe kwakakonzera kubuda kweakanyanya kuoma modal zvimiro (yakanyanya kukosha pakati pavo maoctave modes, anonzi "harmonies").

Wed-century. modal system, mukusiyana nechiGiriki, seyo huru. mhando haina T., asi yakawanda polyphonic zvimiro - iyo octave modhi, guidon hexachord. Zvisinei, basa raT. rinoramba rakakosha zvikuru mavari. Saka, iyo yakazara yekupedzisira ye medieval modes inoumba T. DEFG (= defg mune yazvino notation system); mukati megadziriro ye octave mode, T. inoramba iri huru. structural cell.

Guidon's hexachord ndeyekupindirana kwema dec matatu ese. maererano neiyo diatonic interval. T.

Muchimiro chezviyero hunhu hweRussia. nar. melodics, T. yeimwe kana imwe interval kuumbwa ndechimwe chezvinhu zvakakosha zvinoumbwa. Mune mamwe masampuli enziyo dzekare, chiyero cherwiyo chinogumira kuT. (ona Sound system). Chimiro chechikero chemazuva ese, chakaumbwa netoni-toni trichords ine nhanho yechina pakati pemanzwi anogara panzvimbo imwe chete padyo netrichords, inoratidza iyo isiri-octave musimboti uye inogona kumiririrwa sengetani yetoni-toni-semitone tetrachords (ona Yakakwana. system).

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

Yu. N. Kholopov