Study on the Acoustic Characteristics of Different Cavity Thickness and the Structure of Different Absorption Materials
Qingbin Zhao, Liu Yan, Xiaopai Zhang, Xiaojuan Zhang, Changbin Zhang
Available Online November 2015.
- https://doi.org/10.2991/tmcm-15.2015.18How to use a DOI?
- composite structure; absorption coefficient; resonance frequency; sound-absorbing material
- In the reverberation room, the absorption coefficient is measured by the composite structure of perforated plate, perforated plate and porous sound absorbing material, and the sound absorption characteristics of perforated plate are studied. Through the analysis of the data ,it is founded that: under different thickness of the cavity D, the peak value of sound absorption coefficient of perforated plate is maintained is about 0.35; the resonance frequencies of the perforated plate decreases continuously along with the increase of the thickness of the cavity D, distributed in 250 ~ 630Hz.Perforated plate with composite structures of different absorption material is under the different thickness of the cavity D, and the peak value of the absorption coefficient is maintained at 0.7~0.85;the resonance frequency of the composite structure decreases with the increase of the cavity thickness D , distributed in 200 ~ 500 Hz. The width of the absorption band has no obvious relation with the thickness of the cavity D, but it has a great relationship with the perforated plate which is added to the sound absorption material.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Qingbin Zhao AU - Liu Yan AU - Xiaopai Zhang AU - Xiaojuan Zhang AU - Changbin Zhang PY - 2015/11 DA - 2015/11 TI - Study on the Acoustic Characteristics of Different Cavity Thickness and the Structure of Different Absorption Materials BT - Proceedings of the 2015 International Conference on Test, Measurement and Computational Methods PB - Atlantis Press SP - 70 EP - 73 SN - 2352-538X UR - https://doi.org/10.2991/tmcm-15.2015.18 DO - https://doi.org/10.2991/tmcm-15.2015.18 ID - Zhao2015/11 ER -