Predicting the sound absorption of natural materials: Best-fit inverse laws for the acoustic impedance and the propagation constant
详细信息 查看全文
- 作者：Umberto Berardia ; uberardi@ryerson.ca" class="auth_mail" title="E-mail the corresponding author ; Gino Iannaceb
- 关键词：Sustainable materials ; Natural fibers ; Airflow resistance ; Sound absorption ; Best-fit methods
- 刊名：Applied Acoustics
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：115
- 期：Complete
- 页码：131-138
- 全文大小：2267 K
文摘
- class="listitem" id="list_l0005">
- class="label">•
Natural materials are a valid option for sound absorption treatments.
- class="label">•
An inverse method to predict the acoustical properties of nine natural fibers is presented.
- class="label">•
Using a least-square fit procedure, the acoustic impedance and propagation constant laws are calculated.
- class="label">•
The inverse method allows to determine different physical parameters of each fiber.
- class="label">•
The empirically derived laws allow to include natural fibers in software for room acoustics.