Improving low-frequency sound absorption of micro-perforated panel absorbers by using mechanical impedance plate combined with Helmholtz resonators

Onen, 2010, Design of a single layer micro-perforated sound absorber by finite element analysis, Appl Acoust, 71, 79, 10.1016/j.apacoust.2009.07.012 Tayong, 2011, Experimental investigation of holes interaction effect on the sound absorption coefficient of micro-perforated panels under high and medium sound level, Appl Acoust, 72, 777, 10.1016/j.apacoust.2011.04.011 Liu, 2010, Enhancing micro-perforated panel attenuation by partitioning the adjoining cavity, Appl Acoust, 71, 120, 10.1016/j.apacoust.2009.07.016 Zhao, 2008, Three layer micro-perforated panel optimal design and analysis of its characteristics, Acta Acust, 33, 84 Dicky, 1996, Helmhltz resonators: one-dimensional limit for small cavity length-to diameter ratios, J Sound Vib, 195, 512, 10.1006/jsvi.1996.0440 Lv, 2002, A brand new type sound absorbing structure -the perforated panel resonator with flexible tube bundles, 342 Lin, 2011, Effect of sound-absorbing material on a micro- perforated absorbing construction, Acta Acust, 30, 191 Xu, 2011, Study on absorption performance of thin Micro-perforated panel penetrated with copper fiber, Noise Vib Control, 6, 136 Park, 2013, Acoustic properties of micro-perforated panel absorbers backed by Helmholtz resonators for the improvement of low-frequency sound absorption, J Sound Vib, 332, 4895, 10.1016/j.jsv.2013.04.029 -Hu, 2013, Effect of structure parameters on the sound absorption of micro-perforated panel absorber, Piezoelectr Acoustooptics, 35, 624 Zhou, 2006, A note on the prediction method of reverberation absorption coefficient of double layer micro-perforated membrane, Appl Acoust, 67, 106, 10.1016/j.apacoust.2005.05.004 Du, 2001, 121 Maa, 2002, Helmholtz resonator, Tech Acoust, 1, 2 Hu, 2013, The experiments and calculation on the absorptivity of micro-perforated panel absorber with alterable air-cavity, Piezoelectr Acoustooptics, 35, 38 Maa, 1975, Theory and design of micro-perforated panel sound absorbing constructions, Sci Sinica, 18, 55