Patent ID: 9613613
Date: 2017-04-04
CPC Classifications: G10K

Claim:
1. An active acoustic control method for attenuating in frequency one/several narrow-band disturbing noises in a configuration of a space, said space including: at least one source of narrow-band disturbing noise, at least one counter-noise loudspeaker intended to produce a counter-noise in said space as a function of a loudspeaker control signal U(k), and at least one error microphone intended to measure the sounds in said space and producing a measurement signal Y(k), the attenuation occurring essentially in the vicinity of the error microphone(s), said space with its loudspeaker(s) and its microphone(s) forming a physical electroacoustic system, said method including a calculation in real time, in a calculator, of the control signal U(k) as a function of the measurement signal according to a control law with internal model and disturbance observer, said control law implementing a model of the electroacoustic system, wherein said model of the electroacoustic system has been previously obtained by a model identification method,