Rov qab counterpoint |
Reversible counterpoint - polyphonic. kev sib xyaw ua ke ntawm cov suab paj nruag, uas tuaj yeem hloov pauv mus rau lwm qhov, derivative, nrog kev pab cuam ntawm inversion ntawm ib qho, ob peb (tsis tiav O. to.) lossis tag nrho cov suab (tiag tiag O. to.), hom kev sib tw nyuaj. Feem ntau O. to. nrog rau kev thov rov hais dua ntawm txhua lub suab, qhov twg qhov kev sib txuas derivative zoo ib yam li qhov kev xav ntawm tus thawj hauv daim iav, lub npe hu ua. iav counterpoint. Nws yog tus cwj pwm los ntawm qhov sib npaug ntawm qhov sib npaug ntawm cov khoom qub thiab cov khoom sib txuas (JS Bach, The Well-Tempered Clavier, vol. 1, fugue G-dur, bars 5-7 thiab 24-26; The Art of the Fugue, No. 12). Ua tsis tiav O. mus yog qhov nyuaj dua: lub sijhawm ntawm qhov kev sib txuas pib hloov pauv hauv qhov sib piv tsis muaj cov qauv pom. Feem ntau O. to. thiab tsis tiav O. rau. yog ua ke nrog vertically movable counterpoint (vertically reversible: DD Shostakovich, fugue E-dur, tuav 4-6 thiab 24-26; WA Mozart, Quintet c -moll, trio los ntawm lub minuet), kab rov tav thiab ob chav movable counterpoint (tsis tiav vertical-horizontal reversible: JS Bach, two-part invention in g-moll, bars 1-2 and 3-4), counterpoint uas tso cai rau ob npaug (tsis tiav reversible nrog ob npaug: JS Bach, The Well-Tempered Clavier, vol. 2, fugue hauv b-moll, tuav 27-31 thiab 96-100); rov qab txav los kuj siv hauv O. rau. daim duab, qhov sib piv ntawm cov suab feem ntau hloov. Cov txheej txheem ntawm O. to. yog dav siv los ntawm composers ntawm lub xyoo pua 20th. (A. Schoenberg, Hindemith, RK Shchedrin, thiab lwm yam), feem ntau ua ke nrog cov khoom siv me me yav dhau los. daim ntawv (rov qab txav).
References: Bogatyrev SS, Reversible counterpoint, M., 1960; Yuzhak K., Ib co nta ntawm cov qauv ntawm fugue los ntawm JS Bach, M., 1965, §§ 20-21; Taneev SI, Fragment from the version of the introduction to the book "Mobile counterpoint of strict writing ...", nyob rau hauv phau ntawv: Taneev S., Los ntawm scientific thiab pedagogical. cuab yeej cuab tam, M., 1967. Saib kuj lit. nyob rau hauv tsab xov xwm Reversal ntawm lub ncauj lus.
VP Frayonov
