Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Karolina Kolber"'
Publikováno v:
Applied Acoustics. 114:56-70
The paper presents a method to generate a single user-selected waveguide cut-on mode by means of a mode synthesiser consisting of a set of point sources, each of them modelled by a thin pipe outlet and driven by a separate loudspeaker. Analysis of so
Autor:
Michał Kozupa, Roberto Zannol, Gianluca Bustreo, Miljenko Hrkac, Grzegorz Kmita, Karolina Kolber
Publikováno v:
Applied Mechanics and Materials. 798:135-139
Power transformers emit a very characteristic harmonic sound during operation. The sound spectrum consists of the harmonics of double frequency of the power grid with the fundamental of 100Hz or 120Hz in different countries around the world. This fun
Publikováno v:
2018 Joint Conference - Acoustics.
The paper presents the procedure of experimental derivation of an acoustic two-port scattering matrix for a multimode wave propagating, for example, in a muffler of a complicated design, applying the single-mode generator. The self-designed single-mo
Publikováno v:
2018 Joint Conference - Acoustics.
The article analyses discrepancies in the results of the acoustic pressure measurement carried out for measuring points located on the duct axis at a chosen distance from the sound sources. The measurement set-up consists of a self-designed single mo