Standard techniques to measure the sound absorption coefficient or the acoustic impedance of materials are the Kundt’s tube and the reverberant room, albeit they are not practicable in-situ. In addition, these measurement methodologies involve extracting small or large samples of the material under test, which is not permitted for materials of historical importance. In this paper, the possibility of determining the normal acoustic impedance and the normal sound absorption coefficient based on direct in-situ measurements using a Laser Doppler Vibrometer (LDV) has been analyzed. Specifically, measurements have been conducted avoiding any contact on historical sandstones, bricks, and wood planks of the Greek-Roman Theater of Tyndaris located in Sicily (Italy).

Authors: Saccenti, Leonardo; Armelloni, Enrico; Farina, Adriano; Bevilacqua, Antonella; Lavagna, Lorenzo
Affiliations: University of Parma, Italy; University of Parma, Italy; Polytechnic University of Milan, Italy; University of Parma, Italy; University of Parma, Italy(See document for exact affiliation information.)
Express Paper 31; AES Convention 153; October 2022
Publication Date: October 19, 2022 Import into BibTeX
Subject: Applications in Audio
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=21913

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:   /conv/153/epaper31.pdf

Start a discussion about this Applications in Audi!