Use of slow sound to design perfect and broadband passive sound absorbing materials.

@article{Groby2016UseOS,
  title={Use of slow sound to design perfect and broadband passive sound absorbing materials.},
  author={J. Groby and R. Pommier and Y. Aur{\'e}gan},
  journal={The Journal of the Acoustical Society of America},
  year={2016},
  volume={139 4},
  pages={
          1660
        }
}
Perfect (100%) absorption by thin structures consisting of a periodic arrangement of rectangular quarter-wavelength channels with side detuned quarter-wavelength resonators is demonstrated. The thickness of these structures is 13-17 times thinner than the acoustic wavelength. This low frequency absorption is due to a slow sound wave propagating in the main rectangular channel. A theoretical model is proposed to predict the complex wavenumber in this channel. It is shown that the speed of sound… Expand

Figures, Tables, and Topics from this paper

Thin sound absorbers with coiled and coupled resonators
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 34 REFERENCES
Acoustic metasurface with hybrid resonances.
Acoustical properties of air-saturated porous material with periodically distributed dead-end pores.
...
1
2
3
4
...