Tetrachord |

Greek tetraxordon, lit. - zingwe zinayi, kuchokera ku tetra, m'mawu apawiri - zinayi ndi xordn - chingwe

Sikelo ya masitepe anayi mumtundu wachinayi changwiro (mwachitsanzo, g - a - h - c). Udindo wapadera wa T. pakati pa monodich. Zomangamanga za modal zimatsimikiziridwa ndi kuyanjana kwa zinthu zazikulu za 2 zosinthika - zofananira (zogwirizana ndi kuyenda motsatira mamvekedwe a sikelo kuchokera pachimake) ndi ma harmonic (motsatira - ndi kutsutsa kwa consonant ndi dissonant maubale). Udindo wa consonance monga wolamulira wa melodic movement poyamba adapeza zochepetsetsa za consonances - chachinayi, "choyamba" consonance (Gaudentius; onani Janus C., "Musici scriptores graeci", p. 338). Chifukwa cha izi, T. (osati octachord ndi pentachord) imakhala yaikulu pamaso pa mamba ena. ma cell a modal system. Umu ndi udindo wa T. mu Chigriki china. nyimbo. Mitsempha ya m'mphepete mwa consonant yomwe imapanga pakati pa T. ("fixed" - estotes, "gestuts") ndizomwe zimakhala mkati mwake, ndipo mafoni (xinoumenoi - "kinemens") akhoza kusintha, kupanga mkati mwa 4 masitepe decomp. diatonic, mamba achromatic ndi anharmonic. kubereka (onani mitundu Yakale Yachi Greek). Kuphatikizika kwa ma rhythms wina ndi mzake kunapangitsa kuti pakhale zovuta kwambiri (zofunika kwambiri pakati pawo ndi ma octave modes, otchedwa "harmonies").

M'zaka za zana. modal dongosolo, mosiyana ndi Greek, monga waukulu. zitsanzo zilibe T., koma zowonjezera za polyphonic - mawonekedwe a octave, guidon hexachord. Komabe, ntchito ya T. imakhalabe yofunika kwambiri mwa iwo. Kotero, chiwerengero cha mapeto a modes akale amapanga T. DEFG (= defg mu dongosolo lamakono la zolemba); mkati mwa chimango cha octave mode, T. imakhalabe yaikulu. structural cell.

Guidon's hexachord ndi interlacing onse dec atatu. malinga ndi nthawi ya diatonic. T.

Mu dongosolo la masikelo khalidwe la Russian. nar. melodics, T. ya nthawi imodzi kapena ina ndi imodzi mwazinthu zofunika kwambiri. M'zitsanzo zina za nyimbo zakale kwambiri, kukula kwa nyimboyi kumangokhala T. (onani Sound system). Kapangidwe ka sikelo yatsiku ndi tsiku, yopangidwa ndi ma toni-toni ma trichords okhala ndi nthawi yachinayi pakati pa mamvekedwe omwe amakhala moyandikana ndi ma trichords oyandikana, amawonetsa mfundo yomwe si ya octave ndipo imatha kuyimiridwa ngati unyolo wa ma toni-tone-semitone tetrachords (onani Perfect ndondomeko).

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

Yu. N. Kholopov