Apparatus with adaptive acoustic echo control for speakerphone mode

摘要

A method includes cycling through a plurality of microphone and speaker combinations in a mobile device in response to the mobile device being placed in speakerphone mode. The mobile device includes a plurality of microphones and at least one speaker. The method obtains acoustic echo data from an echo canceller for each microphone and speaker combination, calculates an acoustic isolation value for each combination and then selects a microphone and speaker combination based on the acoustic isolation value. The method may also include determining an echo spectrum for each microphone and speaker combination using the obtained acoustic echo data, and select an echo control profile based on a characteristic of the echo spectrum. The echo control profile is selected to further improve acoustic isolation for the selected microphone and speaker combination.

主权项

1. A method comprising:
obtaining acoustic echo data from an echo canceller of a mobile device, for a plurality of microphone and speaker combinations, in response to the mobile device being placed in speaker phone mode, the mobile device having a plurality of microphones and at least one speaker; calculating an acoustic isolation value for each microphone and speaker combination; selecting a microphone and speaker combination based on the acoustic isolation value; and selecting an echo control profile from a plurality of echo control profiles corresponding to the selected microphone and speaker combination.