Modifying modal characteristics of sound fields by state feedback control.

@article{Samejima2001ModifyingMC,
  title={Modifying modal characteristics of sound fields by state feedback control.},
  author={Toshiya Samejima},
  journal={The Journal of the Acoustical Society of America},
  year={2001},
  volume={110 3 Pt 1},
  pages={1408-14}
}
  • Toshiya Samejima
  • Published 2001 in The Journal of the Acoustical Society of America
State feedback control of a sound field is investigated for improving the irregular distribution of the natural frequencies at low frequencies. A state-space description of a sound field is derived from an inhomogeneous wave equation using the finite element method. The feedback control system is realized as a feedback filter between sensor microphones and control sources using a state estimator for a linear dynamic system. Pole allocation is employed for calculating the state feedback gain… CONTINUE READING

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