Tertia |

los ntawm lat. tertia - peb

1) Ib ntus ntawm qhov ntim ntawm peb theem diatonic. nplai; qhia los ntawm tus lej 3. Lawv txawv: loj T. (b. 3), muaj 2 lub suab; me T. (m. 3), muaj 1^1/2 suab nrov; nce T. (sw. 3) – 2^1/2 suab nrov; txo T. (d. 3) – 1 tone. T. belongs rau tus naj npawb ntawm cov sij hawm yooj yim tsis tshaj ib octave. Loj thiab me T. yog diatonic. ib ntus; lawv tig mus rau hauv me thiab loj thib rau, feem. Nce thiab txo T. – chromatic intervals; lawv tig mus rau hauv ploj zuj zus thiab augmented thib rau, feem.

Loj thiab me T. yog ib feem ntawm lub ntuj scale: loj T. yog tsim nyob rau hauv lub plaub thiab thib tsib (4:5) overtones (lub thiaj li hu ua ntshiab T.), me me T. - nruab nrab ntawm lub thib tsib thiab thib rau (5: 6) overtones. Lub caij nyoog coefficient ntawm loj thiab me T. ntawm Pythagorean system yog 64/81 thiab 27/32, ntsig txog? Nyob rau hauv tempered scale, lub suab loj yog sib npaug rau 1/3, thiab lub suab me me yog 1/4 ntawm octave. T. rau lub sij hawm ntev tsis tau suav hais tias yog consonances, tsuas yog nyob rau hauv lub xyoo pua 13th. lub consonance ntawm peb (concordantia imperfecta) tau lees paub nyob rau hauv kev sau ntawv ntawm Johannes de Garlandia thiab Franco ntawm Cologne.

2) Qhov thib peb degree ntawm diatonic nplai.

3) Tertsovy suab (lub suab) triad, xya chord thiab tsis chord.

VA Vakhromeev