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AssigneeApple Inc.
InventorsSean A. Ramprashad, Adam E. Kriegel, Sylvain J. Choisel, Afrooz Family
Estimating the term…
An electronic device having a device housing includes a loudspeaker and several microphones within the device housing. A control circuit is electrically coupled to the loudspeaker and microphones. The loudspeaker produces speech and/or music. The control circuit determines a statistical measure for a first data set representing individual impulse responses from the plurality of microphones and compares that to a predetermined statistical measure for a second data set representing individual object-free impulse responses from the plurality of microphones to determine if an object is near the device. The statistical measure may be variance and may be computed in the time domain. Variance may be calculated using differences between the individual impulse responses and a mean impulse response that is a linear combination of the impulse responses for the plurality of microphones. The control circuit may include echo cancellers to mitigate common signals and/or other acoustic sources.
An electronic device comprising:
A control circuit for an electronic device that includes a loudspeaker and a plurality of microphones within a device housing, the control circuit providing an output signal to the loudspeaker, receiving input signals from the plurality of microphones, wherein the input signals are generated by the plurality of microphones sensing sounds output by the loudspeaker based on the output signal, and wherein the control circuit is configured to perform analysis operations comprising:
A method for determining if any object is near an electronic device that includes a loudspeaker and a plurality of microphones within a device housing, the method comprising:
Dependencies are inferred from the claim text.