Systems and methods for using a speaker as a microphone in a mobile device

摘要

In accordance with methods and systems of the present disclosure, a mobile device may include an enclosure adapted such that the enclosure is readily transported by a user of the mobile device, a speaker associated with the enclosure for generating sound, and a controller within the enclosure, communicatively coupled to the speaker. The controller may be configured to receive a signal from the speaker, the signal induced at least in part by sound incident on the speaker other than sound generated by the speaker and process the signal.

主权项

1. A mobile device comprising:
an enclosure adapted such that the enclosure is readily transported by a user of the mobile device; a speaker associated with the enclosure for generating sound; a capacitive microphone; and a controller within the enclosure, communicatively coupled to the speaker and the capacitive microphone, and configured to:
receive a first signal from the speaker, the first signal induced at least in part by sound incident on the speaker other than sound generated by the speaker;receive a second signal from the capacitive microphone, the second signal induced by sound incident on the capacitive microphone;process at least one of the first signal and the second signal to determine at least one characteristic of sound incident upon at least one of the speaker and the capacitive microphone; andselect at least one of the capacitive microphone and the speaker as a signal source for incident sound based on the characteristic.