The internationally recognized procedure ISO 354: 2003 for measuring sound absorption
coefficients under diffuse field conditions is now under revision. The main reason for this …

The research and development phase of sound absorptive building materials by designers,
engineers, acoustic consultants and architects need tools for fast, inexpensive preliminary …

Standardised absorption measurements in reverberation rooms suffer from relatively low
reproducibility, especially at low frequencies and for highly absorptive samples. In these …

In the present paper the design and the ante-and post-operam experimental analysis of the
acoustic performance of the church of San Francesco al Prato in Perugia (Italy) are …

Several acoustic measurement procedures are elaborated under the assumption that they
happen inside an ideally diffuse sound field. However, the definition of diffuseness may vary …

In recent years low frequency measurements in building and room acoustics fields gained
attention. Moreover the low frequency sound absorption coefficient (below 100 Hz) has …

Obtaining the reverberation time of a multipurpose building is most effective when accurate
data is used to simulate the building. Therefore, this study proposes a method of measuring …

This research presents a thorough evaluation of the reverberation room at Acoustics
Laboratory in National Institute of Standards (NIS) according to the related international …

In present days, the indoor spaces need more and more attention on the design of acoustic
proprieties of enclosed environments such as conference rooms, classrooms and offices. In …

This paper describes the design principles underlying the Round Robin Test (RRT) carried
out among the laboratories of the Sound Absorption working group of the Italian …