Nxp B.v.

Alan OCinneide

Temujin Gautama

Lutsen Ludgerus Albertus Hendrikus Dooper

A loudspeaker controller () for controlling a loudspeaker (), configured to determine time-varying impedance information of the loudspeaker () based on a loudspeaker voltage and a measure of a loudspeaker current and provide for control of the loudspeaker () in accordance with said time-varying impedance information.

Loudspeaker controller

Systems and method for audio processing are disclosed. Left and right channels of an audio data stream are combined to derive sum and difference signals. A time domain to frequency domain converter is provided for converting the sum and difference signals to the frequency domain. a first processing unit is provided for deriving a frequency domain noise signal based at least partly on the frequency domain difference signal. A second processing unit is provided for processing the frequency domain sum signal using the noise signal thereby to reduce noise artifacts in the sum signal. A frequency domain to time domain converter is provided for converting at least the processed frequency domain sum signal to the time domain.

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Brussels, Belgium

Alan OCinneide