The in situ absorption characteristics of sound-absorbing samples are generally estimated
inversely from sound field measurements above the sample's surface. However, the entire …

Sound absorption of a road surface is considered one of the most important parameters
influencing tire–road noise levels, especially for surfacings with high air voids content. In a …

In this paper the effects of the finite size of a sample on the measurement of the normal
absorption coefficient are explored with the aid of a BEM model. Both the experimental …

The measurement of the sound absorption coefficient is clearly described in the ISO 10534
series of standards as well as in the ISO 354: 2003 standard. However, the methods …

In this paper, the measurement of the absorption coefficient of non-locally reactive sample
layers of thickness d 1 backed by a rigid wall is investigated. The investigation is carried out …

Conserving historical heritage sites is fundamental for preserving cultural identity. Effective
interventions require building damage to be pre-detected. Because stone masonry is one of …

Abstract Characterization of rough surface properties, such as surface shape or surface
impedance, is relevant in many applications. Previous work has been done for …

Sound visualization techniques have played a key role in the development of acoustics
throughout history. The development of measurement apparatus and techniques for …

Thin layers of porous media are widely adopted in sound absorption and noise control
applications due to their compact arrangement. Particularly, porous media with low flow …

Reliable data on acoustical properties of materials are crucial for the design of a desired
acoustic environment as well as to obtain accurate results from acoustic simulations …