A novel method of designing stable feedback controllers for local control of sound Academic Article uri icon


  • This paper investigates the performance and stability of a virtual microphone feedback controller for local control of sound through theoretical analysis, simulations and real-time implementation. In real-time implementation of practical systems we usually need to measure the frequency response of the controller before the controller is implemented, in order to ensure that the expected performance is achieved. If an unstable controller is used, we will not be able to measure the frequency response of the controller, which will make the implementation and maintenance of the controller more difficult. Therefore a novel method to design a stable feedback controller for a local control system is presented in this paper. The local control system is designed to attenuate a broadband disturbance at a point near the listener's ear, ie the virtual microphone, rather than at the control microphone, ie the …

publication date

  • January 1, 2012