Lub npe los ntawm tetra (los ntawm Greek-"plaub ntawm ib yam dab tsi") thiab chord (los ntawm Greek chordon-" hlua" lossis "sau"). Nyob rau hauv ancient Greek suab paj nruag txoj kev xav, tetrachord tau qhia ib ntu ntawm cov txheej txheem zoo dua thiab tsawg dua uas cuam tshuam los ntawm cov ntawv sau tsis tau (Greek: ἑστῶτες); cov ntawv sau ntawm cov no yog txav tau (Greek: κινούμενοι).
Leej twg tsim tetrachord?
Qhov no txhais tau tias lawv txhua tus yuav tsum nyob hauv tsib lub ntsiab lus, lossis ib nrab kauj ruam, ntawm daim ntawv hauv paus. Tetrachords yog thawj zaug tsim thiab siv los ntawm cov Greeks thaum ub ua kev zoo siab rau kev sib piv zoo meej hauv suab paj nruag, thiab niaj hnub no feem ntau pom hauv suab paj nruag jazz.
txhais li cas los ntawm tetrachord?
In Western suab paj nruag, tetrachord yog ib qho kev nce qib ntawm plaub sau ntawv. Ob lub tetrachords tsis sib xws (cov uas tsis muaj suab nrov), txhua qhov sib txawv ntawm cov suab nrov, suab nrov, semitone, ua ke los ua qhov loj.
Lub hom phiaj ntawm tetrachord yog dab tsi?
Tetracords yog zoo heev los rhuav tshem cov nplai rau hauv cov chunks uas tswj tau. Scales yooj yim heev kom paub tseeb thaum txhua yam koj yuav tsum nco ntsoov yog ob lub tetrachords es tsis txhob 8 sau ntawv.
Tetrachord loj tsim li cas?
Ib tug loj tetrachord yog ua ntawm tag nrho cov kauj ruam, ua raws li lwm kauj ruam, ua raws li ib nrab kauj ruam. Ob tug loj tetrachords muab tso rau hauv succession ua ib tug loj scale. Piv txwv li, hauv C loj, Tetrachord kuv yog ua nrogcov ntawv C, D, E, thiab F.
