Minimizing echo caused by stereo audio via position-sensitive acoustic echo cancellation

A teleconference computing system, comprising:

• one or more processors;
• and
• one or more non-transitory computer-readable media that store instructions that, when executed by the one or more processors, cause the computing system to perform operations, the operations comprising:
• obtaining position information, wherein the position information is indicative of a position of a first participant associated within a teleconferencing space, and a position of a second participant within a second teleconferencing space, wherein the first participant is associated with the teleconference computing system and the second participant is associated with a second teleconference computing system;
• rendering, from a mono audio output signal from the second teleconference computing system, a stereo audio output signal based on the position information;
• causing playback of the stereo audio output signal at a plurality of audio output devices located within the teleconferencing space;
• receiving an audio input signal captured at an audio capture device located within the teleconferencing space, wherein at least a portion of the audio input signal comprises audio caused by playback of the stereo audio output signal by the plurality of audio output devices;
• and
• processing the audio output signal with a linear portion of an Acoustic Echo Cancellation (AEC) module;
• processing the audio input signal with a non-linear portion of the AEC module by assigning the position information to a first position cluster of a plurality of position clusters, wherein the first position cluster is associated with a first linear portion performance estimate of a plurality of linear portion performance estimates respectively associated with the plurality of position clusters;
• and
• processing the audio input signal with the non-linear portion of the AEC module based on the first portion performance estimate.

One or more non-transitory computer-readable media that store instructions that, when executed by one or more processors of a teleconference computing system, cause the one or more processors to perform operations, the operations comprising:

• obtaining a stereo audio output signal;
• receiving an audio input signal captured at an audio capture device located within a teleconferencing space, wherein at least a portion of the audio input signal comprises audio caused by playback of the stereo audio output signal by a plurality of audio output devices, wherein both the plurality of audio output devices and a participant of a teleconference are located within the teleconferencing space;
• using position information to perform an Acoustic Echo Cancellation (AEC) process to the at least the portion of the audio input signal, wherein the position information is indicative of a position of the participant of the teleconference relative to the plurality of audio output devices;
• processing at least a portion of the audio input signal with a linear portion of an AEC module of the teleconference computing system;
• processing, based on the position information, the audio input signal with a non-linear portion of the AEC module, comprising:
• assigning the position information to a first position cluster of a plurality of position clusters wherein the first position cluster is associated with a first linear portion performance estimate of a plurality of linear portion performance estimates respectively associated with the plurality of position clusters;
• and
• processing the audio input signal with the non-linear portion of the AEC module based on the first linear portion performance estimate.