Preduvanie |

I-Preduvanie - indlela yokukhipha imisindo enobude obuhlukahlukene kumamuse omoya. izinsimbi ngaphandle kosizo lokudlala izimbobo, ama-valve noma ama-vents. Emathuluzi omlomo wethusi P. - osn. isimiso sokukhipha umsindo, sokhuni - sisetshenziswa lapho kukhishwa imisindo ku-octave yesi-2 neyesi-3 yohlu lwazo. Ngo-P., umculi, ngaphandle kokushintsha isikhundla seminwe, ukhuphula kakhulu amandla okukhipha umoya kanye nokungezwani kwezindebe, ngenxa yalokho ikholomu yomoya efakwe emgqonyeni wombhobho ihlukaniswe yaba ezimele. izingxenye ezizwakala ziphakeme kunezinkulu. amathoni wensimbi, ahambisana nezinyathelo zesikali semvelo: ikholomu yomoya, ehlukaniswe ngama-halves angu-2, inikeza umsindo wemvelo we-2 (i-octave evela kwithoni eyinhloko); Izingxenye ezi-3 kwezintathu - umsindo wesithathu wemvelo (i-octave kanye nengxenye yesihlanu yethoni eyinhloko); engxenyeni yesi-3 - umsindo wemvelo we-4 (ama-octave ama-4 avela kwithoni eyinhloko). Ukuhlukaniswa okuqhubekayo kwekholomu yomoya emimoyeni yezinkuni kusetshenziswa ngokungavamile kakhulu, ngethusi ngosizo lwe-P. bafinyelela umsindo wemvelo we-2. Lapho i-P. ku-clarinet, ngenxa yezici zomklamo wayo (umzila we-cylindrical), hhayi owesibili, kodwa umsindo wemvelo wesi-16 uvela, okungukuthi, hhayi i-octave, kodwa i-duodecime (okuthiwa i-P. yesihlanu). Ku-oboes, i-clarinets, ama-bassoon, kukhona okukhethekile. Amavalvu e-“octave” asiza i-P.

S. Ya. Levin