US Patent No. 10,599,386

AUDIO PROCESSING ALGORITHMS


Patent No. 10,599,386
Issue Date March 24, 2020
Title Audio Processing Algorithms
Inventorship Timothy W. Sheen, Brighton, MA (US)
Assignee Sonos, Inc., Santa Barbara, CA (US)

Claim of US Patent No. 10,599,386

1. A playback device comprising:a network interface;
an audio stage comprising an amplifier;
one or more processors;
a housing, the housing carrying at least the network interface, the audio stage, the one or more processors, and data storage having stored therein instructions executable by the one or more processors to cause the playback device to perform operations comprising:
determining that a first type of calibration is unavailable, the first type of calibration configured to offset acoustic characteristics of a particular zone in which the playback device is located;
based on determining that the first type of calibration is unavailable, calibrating the playback device with a second type of calibration, wherein calibrating the playback device with the second type of calibration comprises:
determining that the playback device is in a particular type of zone;
querying, via the network interface, a database of pre-determined calibrations of the second type for a particular pre-determined calibration of the second type, the particular pre-determined calibration offsetting acoustic characteristics of a model zone that simulates the particular type of zone, wherein the model zone is based on additional zones corresponding to the particular type of zone, wherein the model zone includes one or more known materials having a given reflectivity characteristic, and wherein the database is hosted by one or more servers remote from the playback device;
applying the particular pre-determined calibration to the audio stage of the playback device; and
playing back audio content via the calibrated audio stage and one or more speakers.