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Volume control for individual sound zones

  • US 10,499,177 B2
  • Filed: 03/30/2018
  • Issued: 12/03/2019
  • Est. Priority Date: 04/17/2017
  • Status: Active Grant
First Claim
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1. A system for independent volume adjustment of an audio signal for a sound zone in a plurality of sound zones, the system comprising:

  • a plurality of loudspeakers associated with each sound zone in the plurality of sound zones;

    a tuning system having an equalizer applied to each loudspeaker in the plurality of loudspeakers for each sound zone;

    a master volume control setting for the tuning system;

    a gain modification setting for each sound zone that is set independently for each sound zone and differs from the master volume control setting, the gain modification setting having a headrest gain setting for a stereo component of the audio signal and a bass gain setting for a mono component of the audio signal;

    a high pass filter applied to the audio signal to separate a stereo component for distribution to the plurality of loudspeakers in each sound zone in the plurality of sound zones and applying the headrest gain setting to the stereo component;

    a low pass filter applied to the audio signal to separate a low frequency mono component for distribution to the plurality of loudspeakers in each sound zone and applying the bass gain setting to the low frequency mono component, the low frequency mono component having an individual sound zone algorithm applied thereto for distribution to all of the loudspeakers in the plurality of loudspeakers so that each individual zone uses the bass gain settin; and

    routing the modified stereo component of the audio signal and the modified mono component of the audio signal to predetermined loudspeakers thereby defining a tunable field for each sound zone in the plurality of sound zones.

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