Abstract: Embodiments of the present invention provide a controller, a system, a method and a vehicle, to receive one or more user inputs from one or more user input units; receive one or more vehicle condition inputs from one or more vehicle condition sensor units; determine if an open position of a aperture member of a vehicle is likely to cause buffeting; select an optimisation strategy from a plurality of optimisation strategies in dependence on the one or more user inputs and/or the one or more vehicle condition inputs, wherein each of the plurality of optimisation strategy comprises different instructions to determine one or more positions for at least one aperture member; and generate an output for the one or more aperture member positioning units to move at least one aperture member based on the selected optimisation strategy.

Abstract: Disclosed is a method of generating a sound masking signal, comprising: receiving an input sound signal, determining the frequency domain spectrum of the input sound signal, and generating a sound masking signal for the sound signal. The sound masking signal is generated from components comprising, i) a nominal component having a frequency domain spectrum the frequency band amplitudes of which are proportional to corresponding frequency band amplitudes of the input sound signal frequency domain spectrum, and ii) a decay biasing component that reduces the rate of at least some reductions in time domain amplitude of the sound masking signal where such reductions would be generated over time in accordance with the nominal component.

Abstract: Embodiments of the present invention provide a controller, a system, a method and a vehicle, to receive one or more user inputs from one or more user input units; receive one or more vehicle condition inputs from one or more vehicle condition sensor units; determine if an open position of a aperture member of a vehicle is likely to cause buffeting; select an optimisation strategy from a plurality of optimisation strategies in dependence on the one or more user inputs and/or the one or more vehicle condition inputs, wherein each of the plurality of optimisation strategy comprises different instructions to determine one or more positions for at least one aperture member; and generate an output for the one or more aperture member positioning units to move at least one aperture member based on the selected optimisation strategy.

Abstract: Disclosed is a method of generating a sound masking signal, comprising: receiving an input sound signal, determining the frequency domain spectrum of the input sound signal, and generating a sound masking signal for the sound signal. The sound masking signal is generated from components comprising, i) a nominal component having a frequency domain spectrum the frequency band amplitudes of which are proportional to corresponding frequency band amplitudes of the input sound signal frequency domain spectrum, and ii) a decay biasing component that reduces the rate of at least some reductions in time domain amplitude of the sound masking signal where such reductions would be generated over time in accordance with the nominal component.