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Sound intensity distribution around organ pipe

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The aim of the paper was to compare acoustic field around the open and stopped organ pipes. The wooden organ pipe was located in the anechoic chamber and activated with a constant air flow, produced by an external air-compressor. Thus, long-term steady state response was possible to obtain. Multichannel acoustic vector sensor was used to measure the sound intensity distribution of radiated acoustic energy. Measurements have been carried out on a defined fixed grid of points. A specialized Cartesian robot allowed for a precise positioning of the acoustic probe. Afterwards, the data were processed in order to obtain and visualize the sound intensity distribution around the pipe. The fact of opening or stopping the pipe affects the frequency of the generated sound, the sound pressure level and direction of propagation of acoustic energy. For the open pipe, another sound source was present at the top of the pipe. In this case, the streamlines in front of the pipe are propagated horizontally and in a greater distance from the pipe are directed downwards. For the stopped pipe, the streamlines of the acoustic flow were directed upwards. The results for both pipe types were compared and discussed in the paper.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
Archives of Acoustics nr 42, strony 13 - 22,
ISSN: 0137-5075
Język:
angielski
Rok wydania:
2017
Opis bibliograficzny:
Odya P., Kotus J., Szczodrak M., Kostek B.: Sound intensity distribution around organ pipe// Archives of Acoustics. -Vol. 42, iss. 1 (2017), s.13-22
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1515/aoa-2017-0002
Weryfikacja:
Politechnika Gdańska

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