Pereuvanie - extracting natural sounds on the wind instrument musical instruments , achieved by changing the ear cushion and the speed of the air stream. The natural scale consists of harmonics. The main extracted tone is called the first harmonic . Harmonics above the pitch are produced by sweeping. The second and subsequent harmonics are formed by dividing the air column into equal parts (2, 3, 4, etc.) [1] .
The ability to extract and the number of received harmonics depends on the shape and size of the instrument channel, and on the skill of the performer.
Overpouching is also called receiving the harmonica playing of the Richter system , as a result of which the main frequency of reed vibrations changes [2] .
Description
On orchestral labial ( flute ) and reed instruments, due to the small length of the channel, usually no more than four first harmonics are extracted. On modern flute , bassoon and oboe , harmonics 2 and 4 ( octave permutations) can be obtained. On the clarinet there are harmonics 3 ( fifths peaking) and 5 [3] . On the bassoons, oboes and clarinets there is a special valve to facilitate pereuvaniya [1] .
When playing on ambushure ( copper and other) instruments, smashing is performed by changing the frequency of the performer's lips and is the main way to get sounds. Before the advent of valves, playing such instruments was possible only with the help of pereuvaniya. The maximum attainable harmonic is the 16th [1] .
Notes
- ↑ 1 2 3 Great Russian Encyclopedia, 2014 .
- ↑ Percussion on the harmonica . harmonica.ru . The appeal date is January 11, 2019.
- ↑ Kozhevnikov, 1984 .
Literature
- Pereduvanie // Great Russian Encyclopedia. Volume 25. - M. , 2014. - p. 628-629.
- Natural sound scale. Pereuvanie. Mensura // Wind Instruments / Comp. B.T. Kozhevnikov. - M .: Music, 1984. - p. 5-10. - 144 s.