Controllers for active noise control systems
OwnerRogerio Guedes Alves, Walter Zuluagainventors
Life of this patent
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Abstract
A method for obtaining coefficients for a non-adaptive controller for use in an active noise control system, the method comprising capturing experimental data from a target system to characterise the plant of the target system; and implementing an adaptive algorithm to compute the coefficients in dependence on the experimental data.
Claims14
A method for obtaining coefficients for a non-adaptive controller for use in an active noise control system, the method comprising
- capturing experimental data from a target system to characterise the plant of the target system;
- and
- implementing an adaptive algorithm to compute the coefficients in dependence on the experimental data.
An integrated circuit configured to implement a non-adaptive active noise control algorithm, the integrated circuit being configured to be externally programmable with one or more coefficients and to implement the active noise control algorithm in accordance with the coefficients.
A method of configuring an audio device, the audio device being integrated with a noise source and having a microphone and a loudspeaker and an integrated circuit that is capable of implementing a non-adaptive noise control algorithm to at least partially remove from an output signal of the microphone noise derived from the noise source, the method comprising:
- testing a sample device having analogous audio properties to the said audio device to estimate the properties of the sample device;
- determining in dependence on the estimated properties one or more coefficients for use in the non-adaptive noise control algorithm;
- and
- storing those coefficients in the said audio device for use by it in implementing the non-adaptive noise control algorithm.
Dependencies are inferred from the claim text.