Estimation of errors in determining the sound power emitted by air ducts with soundproof linersA.I. Antonov1, Doct. Tech. Sci
V.I. Ledenev1, Doct. Tech. Sci
V.P. Gusev2, Doct. Tech. Sci
1 Tambov state technical University
(392000, Tambov, Sovetskaya st., 106)
2 Research Institute of construction physics of RAASN
(127238, Moscow, Locomotivny Drive, 21)
Abstract. When calculating the noise emitted by air ducts with soundproofing cladding, calculation errors arise due to averaging in the otvannye bands of the noise levels in the air duct and sound permeability of the lining. In the article principles of an estimation of these errors are considered and the technique of definition of errors for concrete example of facing is given.
Key words: air duct, soundproofing air duct lining, noise calculation, soundproofing.