Passive earplugs are used to prevent workers from noise-induced hearing loss. However,
earplugs often induce an acoustic discomfort known as the occlusion effect. This …

In this paper, the propagation of sound in an acoustically narrow waveguide, the wall of
which is lined with identical dipole resonators and masses on springs, is theoretically …

A new two-dimensional phonon crystal structure was designed and studied deeply by finite
element method and equivalent model method. It is found that the structure has good low …

In this paper, the propagation of sound in an acoustically narrow waveguide, the wall of
which is lined with identical dipole resonators and masses on springs, is theoretically …

Q fff with pf and zf the complex frequency of pole and zero respectively. Since the
main influence of losses is a vertical shift of pairs of pole and zero in the complex frequency …