Multiple microphone switching and configuration
First Claim
1. A mobile communications apparatus comprising:
- a mobile communications handheld device housing having integrated therein three or more microphones; and
a programmed processor that acts as a selector-switch that compares at least one of total harmonic distortion, crosstalk, and side tone for a plurality of near end voice signals from the three or more microphones to designate one of the three or more microphones as the one whose output is a voice dominant input signal and another one of the three or more microphones as the one whose output is an echo or noise dominant input signal, and automatically changes said designation of a pair of microphones, during a call, based on results of said comparisons.
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Abstract
A mobile communications device contains at least two microphones. One microphone is designated by a selector to provide a voice dominant signal and another microphone is designated to provide a noise or echo dominant signal, for a call or a recording. The selector communicates the designations to a switch that routes the selected microphone signals to the inputs of a processor for voice signal enhancement. The selected voice dominant signal is then enhanced by suppressing ambient noise or canceling echo therein, based on the selected noise or echo dominant signal. The designation of microphones may change at any instant during the call or recording depending on various factors, e.g. based on the quality of the microphone signals. Other embodiments are also described.
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Citations
21 Claims
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1. A mobile communications apparatus comprising:
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a mobile communications handheld device housing having integrated therein three or more microphones; and a programmed processor that acts as a selector-switch that compares at least one of total harmonic distortion, crosstalk, and side tone for a plurality of near end voice signals from the three or more microphones to designate one of the three or more microphones as the one whose output is a voice dominant input signal and another one of the three or more microphones as the one whose output is an echo or noise dominant input signal, and automatically changes said designation of a pair of microphones, during a call, based on results of said comparisons. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method in a mobile communications apparatus, comprising:
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comparing at least one of total harmonic distortion, crosstalk, and side tone for a plurality of near end voice signals received from three or more microphones that are integrated in a housing of the mobile communications apparatus; designating a signal of one of the three or more microphones as a voice dominant input signal, and a signal of another one of the three or more microphones as an echo or noise dominant input signal, based on said comparisons; and automatically changing said designation of the voice dominant input signal and the echo or noise dominant input signal, during a call, based on results of said comparisons. - View Dependent Claims (18, 19, 20, 21)
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Specification