Preduvanie |

Preduvanie - mokhoa oa ho ntša melumo ea bophahamo bo fapaneng meqomong ea moea. lisebelisoa ntle le thuso ea ho bapala masoba, li-valve kapa li-vent. Ka lisebelisoa tsa molomo oa koporo P. - osn. molao-motheo oa ho ntša molumo, bakeng sa mapolanka - o sebelisoa ha o ntša melumo ka li-octave tsa 2 le 3 tsa mefuta ea tsona. Ka P., sebini, ntle le ho fetola boemo ba menoana, se eketsa ka matla matla a ho hema le tsitsipano ea molomo, ka lebaka leo karolo ea moea e kentsoeng ka mocha oa moqomo e arotsoe ka tse ikemetseng. dikarolo tse utlwahalang hofeta tse kgolo. melumo ea sesebelisoa, e tsamaellanang le mehato ea sekala sa tlhaho: mohala oa moea, o arotsoe ka li-halves tse 2, o fana ka molumo oa tlhaho oa 2 (octave ho tsoa molumo o moholo); karolo ea 3 ho tse tharo - molumo oa 3 oa tlhaho (octave hammoho le karolo ea bohlano ho tloha molumo o moholo); karolong ea 4 - molumo oa 4 oa tlhaho (2 octave ho tloha molumo o moholo). Karohano e eketsehileng ea mohala oa moea ka har'a meea ea lifate e sebelisoa ka seoelo haholo, ka koporo ka thuso ea P. ba fihla molumo oa tlhaho oa bo16. Ha P. holim'a clarinet, ka lebaka la lintho tse ikhethang tsa moralo oa eona (cylindrical channel), eseng ea 2, empa molumo oa tlhaho oa 3 o hlaha, ke hore, eseng octave, empa duodecime (eo ho thoeng ke P. ea bohlano). Ho li-obo, li-clarinets, li-bassoon, ho na le tse khethehileng. Li-valve tsa "octave" tse tsamaisang P.

S. Ya. Levin