Patent ID: 11871195
Assignee: ALPS ALPINE CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 13:
14. A computer-implemented method for filtering loudness of reproduced sound signals in at least one of a plurality of acoustic zones in a shared acoustic space, the method comprising:
by an electronic processor of a system executing instructions stored on non-transitory memory connected to the electronic processor:
receiving a first acoustic zone source signal configured to be reproduced as a first acoustic zone source signal on a first subset of a plurality of loudspeakers located in a first acoustic zone of the shared acoustic space;
determining a measure of first acoustic zone loudness based on at least the first acoustic zone source signal during a first loudness sampling period;
generating a loudness filter comprising a maximum loudness level based at least in part on the measure of first acoustic zone loudness;
receiving a second acoustic zone source signal configured to be reproduced as a second acoustic zone source signal on a second subset of the plurality of loudspeakers located in a second acoustic zone of the shared acoustic space;
applying the loudness filter to the second acoustic zone source signal to generate filtered sound signals, wherein a loudness level of the filtered sound signals is limited by the maximum loudness level; and
reproducing the filtered sound signals on the second subset of the plurality of loudspeakers.