Using an auxiliary device sensor to facilitate disambiguation of detected acoustic environment changes

A mobile device comprising a microphone array, an audio beamformer and an auxiliary sensor, the mobile device being operable to:

• based on audio input received at the microphone array, detect a change in a direction of arrival of the audio input;
• determine that the detected change in the direction of arrival of the audio input coincides with a non-acoustic physical event detected using the auxiliary sensor;
• and
• based on the determining, steer the audio beamformer in the changed direction of arrival of the audio input.

A mobile device comprising a microphone, an acoustic echo canceller and an auxiliary sensor, the mobile device being operable to:

• detect a degradation in a quality of acoustic echo cancellation being performed by the acoustic echo canceller upon audio input received at the microphone;
• determine that the degradation in the quality of the acoustic echo cancellation coincides with a non-acoustic physical event detected using the auxiliary sensor;
• and
• based on the determining, cause the acoustic echo canceller to reconverge.