ACOUSTIC ECHO CANCELLATION CONTROL FOR DISTRIBUTED AUDIO DEVICES Russian patent published in 2024 - IPC H04R3/00 

FIELD: acoustics.

SUBSTANCE: audio processing method may include receiving output signals from each microphone from a plurality of microphones in an audio environment, wherein the output signals correspond to a current fragment of a person's speech, and determining, based on the output signals of one or more aspects of context information relating to the person, including the estimated current proximity of the person to the one or more microphone locations. Method may include selecting two or more loudspeaker audio devices based at least in part on one or more aspects of context information, determining one or more types of audio processing changes to apply to audio data to be rendered into signals supplied to loudspeakers, for audio devices and enabling application of one or more types of audio processing changes.

EFFECT: increasing speech-to-echo ratio on one or more microphones.

26 cl, 23 dwg