Refereed journal article or data article (A1)

Optimized reference spectrum for rating the facade sound insulation




List of Authors: Virjonen Petra, Hongisto Valtteri, Mäkelä Marko M, Pahikkala Tapio

Publisher: ACOUSTICAL SOC AMER AMER INST PHYSICS

Publication year: 2020

Journal: Journal of the Acoustical Society of America

Journal name in source: JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA

Journal acronym: J ACOUST SOC AM

Volume number: 148

Issue number: 5

Number of pages: 10

ISSN: 0001-4966

eISSN: 0001-4966

DOI: http://dx.doi.org/10.1121/10.0002452

URL: https://asa.scitation.org/doi/10.1121/10.0002452

Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/51032393


Abstract
Objectively determined single-number-quantities (SNQs) describing the airborne sound insulation of a facade should correspond to the subjective perception of annoyance to road traffic sounds transmitted through a facade. The reference spectra for spectrum adaptation terms C and Ctr in standard ISO 717-7 (International Organization for Standardization, 2013) are not based on psycho-acoustic evidence. The aim of this study is to develop reference spectra which result in SNQs that explain the subjective annoyance of road traffic sounds transmitted through a facade well. Data from a psycho-acoustic experiment by Hongisto, Oliva, and Rekola [J. Acoust. Soc. Am. 144(2), 1100-1112 (2018)] were used. The data included annoyance ratings for road traffic sounds (five different spectrum alternatives) attenuated by the facade (twelve different sound insulation spectrum alternatives), rated by 43 participants. The reference spectrum for each road traffic spectrum was found using mathematical optimization. The performance of the acquired SNQs was estimated with nested cross-validation. The SNQs determined with the optimized reference spectra performed better than the existing SNQs for two road traffic spectra out of five and for an aggregate of the five road traffic sound types. The results can be exploited in the development of standardized SNQs.

Downloadable publication

This is an electronic reprint of the original article.
This reprint may differ from the original in pagination and typographic detail. Please cite the original version.




Last updated on 2022-07-04 at 18:13