METHOD & APPARATUS FOR SELECTING A MICROPHONE IN A MICROPHONE ARRAY
First Claim
6. A method for selecting a sound energy detector, comprising:
- receiving sound energy at a sound energy detector array from at least one sound energy source;
digitizing the sound energy output of each of the sound energy detectors in the array;
sampling and quantifying the digitized sound energy associated with each of the sound energy detectors in the array; and
using a calculated difference in the quantified sound energy between pairs of neighboring detectors in the array to select at least one detector in the array to receive sound energy from the at least one sound energy source.
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Abstract
A mobile robotic device includes a microphone array for detecting sound energy in its immediate environment. The sound energy received by each microphone in the microphone array is digitized, sampled and quantified. The quantified sound energy is used to calculate a sound energy difference factor between neighboring microphones in the array, the sound energy difference factors calculated over time are counted to be greater than or lesser than a nominal value and the counts are used to calculate a series of two-dimensional sound energy factors. The output of the microphone with the two highest calculated two-dimensional energy factors is then selected for processing and transmission over a network to be played at a far-end location.
19 Citations
18 Claims
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6. A method for selecting a sound energy detector, comprising:
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receiving sound energy at a sound energy detector array from at least one sound energy source; digitizing the sound energy output of each of the sound energy detectors in the array; sampling and quantifying the digitized sound energy associated with each of the sound energy detectors in the array; and using a calculated difference in the quantified sound energy between pairs of neighboring detectors in the array to select at least one detector in the array to receive sound energy from the at least one sound energy source. - View Dependent Claims (1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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13-1. The apparatus of claim 12 wherein the sound energy detector is a microphone.
Specification