publication . Conference object . 2013

Acoustic properties of perforates under high level multi-tone excitation

Hans Boden;
Open Access English
  • Published: 24 May 2013
  • Publisher: KTH, Farkost och flyg
  • Country: Sweden
Abstract
This paper discusses the effect of high level multi-tone acoustic excitation on the acoustic properties of perforates. It is based on a large experimental study of the nonlinear properties of these types of samples without mean grazing or bias flow. Compared to previously published results the present investigation concentrates on the effect of multiple harmonics. It is known from previous studies that high level acoustic excitation at one frequency will change the acoustic impedance of perforates at other frequencies, thereby changing the boundary condition seen by the acoustic waves. This effect could be used to change the impedance boundary conditions and for...
Subjects
arXiv: Computer Science::Sound
free text keywords: Acoustic excitation, Excitation signals, Frequency components, Impedance boundary conditions, Impedance surface, Multiple harmonics, Nonlinear properties, Sound transmission, Acoustic wave, Electrical impedance, Acoustic impedance, Sound transmission class, Physical acoustics, Acoustic space, Acoustics, Boundary value problem, Materials science, Harmonics
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publication . Conference object . 2013

Acoustic properties of perforates under high level multi-tone excitation

Hans Boden;