Tetrachord, suab paj nruag nplai ntawm plaub sau ntawv, bounded los ntawm lub sij hawm ntawm ib tug zoo meej plaub(ib ntus qhov luaj li cas ntawm ob thiab ib nrab kauj ruam, piv txwv li, c–f).
Koj ua tetrachord li cas?
Tsim lub Tetrachord
Yog peb pib ntawm C, ces ib nrab kauj ruam yuav yog C, ces D, ces D. Cov no yog semitones. Ib lub suab tag nrho yuav yog ob lub suab nrov, lossis dhia ncaj nraim ntawm C mus rau D. Ib lub suab nrov yog tsim los ntawm plaub daim ntawv uas yog tag nrho ntawm tsib lub suab sib nrug.
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.
piv txwv ntawm tetrachord yog dab tsi?
Hauv Greek, lo lus "tetra" txhais tau tias plaub, yog li ntawd lub tetrachord yog ib qho ntawm plaub daim ntawv, nrog rau qhov tshwj xeeb ntxiv uas plaub sau ntawv raug coj los ntawm ib ntu ntawm tsib semitones, lossis ib nrab kauj ruam. … Yog li ntawd, ib qho piv txwv ntawm tetrachord yuav yog plaub sau ntawv hla C ⇨ F lossis G ⇨ C.
Tsab ntawv loj yog dab tsi?
Ib tug tetrachord yog ib series ntawm plaub sau ntawv, feem ntau ua si ib tug tom qab lwm yam. Ib tug loj tetrachord yog ib series ntawm plaub sau ntawv, nyob rau hauv ascending order, sib cais los ntawm cov nram qab no ib theem zuj zus: tag nrho cov kauj ruam – tag nrho cov kauj ruam – ib nrab kauj ruam. Hauv lwm lo lus, yog tias kuv pib ntawm "C" thiab ntxiv tag nrho cov kauj ruam, uas ua rau kuv "D."
