Sound field optimization method and device performing same

A sound field optimization device used in an intelligent cockpit audio system having a first speaker and a second speaker respectively arranged on a front seat and a rear seat on the same side, the first speaker being arranged at a back of the front seat, the second speaker being arranged at a rear seat headrest, the sound field optimization device comprising:

• a first building block, used for building up a first acoustic response model based on audio parameters, an acoustic response transfer function and a first acoustic transfer function corresponding to a reference position inside a controlled area, to be calculated for each speaker, and building up a second acoustic response model based on the audio parameters, the acoustic response transfer function and a second acoustic transfer function corresponding to the reference position inside an uncontrolled area, to be calculated;
• wherein, the controlled area is a division of rear seats currently taken by the rear passenger, the uncontrolled area is a division of rear seats currently not taken by the rear passenger;
• a second building block, used for building up a first acoustic response difference calculation model based on the first acoustic response model and the second acoustic response model;
• a calculation module, used for calculating optimal solution of the audio parameters corresponding to the audio parameters to be calculated for each of the speakers with the maximization of acoustic response difference between the controlled area and the uncontrolled area as constraint condition for the first acoustic response difference calculation model;
• a control module, used for control each of the speakers to output audio signals according to the corresponding audio parameters.