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

Claim 19:
20. A multizone acoustic system configured to filter loudness of reproduced sound signals in at least one of a plurality of acoustic zones in a shared acoustic space, the multizone acoustic system comprising:
a multizone acoustic processor configured to couple to a plurality of loudspeakers; and
a non-transitory memory comprising instructions executable by the multizone acoustic processor, wherein the instructions, when executed by the multizone acoustic processor, cause the multizone acoustic system to:
receive a first acoustic zone source signal, wherein the multizone acoustic processor is configured to reproduce the first acoustic zone source signal on a first subset of the plurality of loudspeakers located in a first acoustic zone of the shared acoustic space;
receive selection of a first acoustic zone volume level via a first volume level selection interface;
determine a measure of first acoustic zone loudness based on at least the first acoustic zone source signal and the first acoustic zone volume level during a first loudness sampling period;
generate a loudness filter comprising a maximum loudness level based on the measure of first acoustic zone loudness;
receive a second acoustic zone source signal, wherein the multizone acoustic processor is configured to reproduce the second acoustic source signal on a second subset of the plurality of loudspeakers located in a second acoustic zone of the shared acoustic space;
receive selection of a second acoustic zone volume level via a second volume level selection interface;
apply 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 the second acoustic zone volume level; and
reproduce the filtered sound signals on the second subset of the plurality of loudspeakers.