A New Alternative Method for the Generation of Acoustic Filters, Modulating Acoustic Impedance: Theoretical Model
作者: Jesús Madrigal-MelchorAgustín Enciso-Mu&ntildeozDavid Armando Contreras-SolorioXochitl Salda&ntildea-Salda&ntildeaRaúl Alberto Reyes-Villagrana
作者单位: 1Unidad Académica de Física, Universidad Autónoma de Zacatecas, Zacatecas, México
2Instituto de Física, Benemérita, Universidad Autónoma de Puebla, Puebla, México
3CONACYT-Universidad Autónoma de Chihuahua, Chihuahua, México
刊名: Open Journal of Acoustics, 2017, Vol.07 (03), pp.39-51
来源数据库: Scientific Research Publishing Journal
DOI: 10.4236/oja.2017.73005
原始语种摘要: Using the transfer matrix method we calculate the frequency dependence of the transmission of longitudinal elastic waves for a layered structure where the specific acoustic impedance of the layers with odd numbering follows a Gaussian distribution, while the inserted even layers have the same impedance as the propagation medium. The structure presents intervals of low-pass, band-stop, and band-pass. The characteristics of the bands depend on the number of layers, on the contrast between the maximum and minimum impedances of the structure, and on the ratio of the width of the inserted layers to the width of the layers with a Gaussian distribution of impedances.
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  • layers 
  • impedance 阻抗
  • width 幅度
  • inserted 嵌入的
  • numbering 编号
  • structure 构造
  • distribution 分布
  • longitudinal 纵向的
  • layered 成层的
  • calculate 计算