A method comprising: receiving far-end audio signals and near-end audio signals; cancelling and/or suppressing acoustic echo and reducing noise from the near-end audio signals thereby generating an enhanced near-end audio signal; detecting sound activities in the enhanced near-end audio signal; detecting voice activities in the enhanced near-end audio signal; determining a sound source position from the near-end audio signals; receiving data indicating face or motion position; determining that an audio event in the enhanced near-end audio signal is a silence event when no sound activities are detected; determining that an audio event in the enhanced near-end audio signal is an interference event when: sound activities are detected but no voice activities are detected; or sound activities are detected and voice activities are detected and the sound source position is not in a predetermined region of interest; or sound activities are detected and voice activities are detected and the sound source position is in the predetermined region of interest but the sound source position is not consistent with the face or motion position; determining that an audio event is a speaker event when sound activities are detected and voice activities are detected and the sound source position is in the predetermined region of interest and the sound source position is consistent with the face or motion position; and generating a mute or unmute indication based on whether the audio event is the interference event or the speaker event and displaying the mute or unmute indication. receiving far-end audio signals and near-end audio signals; cancelling and/or suppressing acoustic echo and reducing noise from the near-end audio signals thereby generating an enhanced near-end audio signal; detecting sound activities in the enhanced near-end audio signal; detecting voice activities in the enhanced near-end audio signal; determining a sound source position from the near-end audio signals; receiving data indicating face or motion position; determining that an audio event in the enhanced near-end audio signal is a silence event when no sound activities are detected; determining that an audio event in the enhanced near-end audio signal is an interference event when: sound activities are detected but no voice activities are detected; or sound activities are detected and voice activities are detected and the sound source position is not in a predetermined region of interest; or sound activities are detected and voice activities are detected and the sound source position is in the predetermined region of interest but the sound source position is not consistent with the face or motion position; sound activities are detected but no voice activities are detected; or sound activities are detected and voice activities are detected and the sound source position is not in a predetermined region of interest; or sound activities are detected and voice activities are detected and the sound source position is in the predetermined region of interest but the sound source position is not consistent with the face or motion position; determining that an audio event is a speaker event when sound activities are detected and voice activities are detected and the sound source position is in the predetermined region of interest and the sound source position is consistent with the face or motion position; and generating a mute or unmute indication based on whether the audio event is the interference event or the speaker event and displaying the mute or unmute indication.