Personal audio device
AssigneeBose Corporation
InventorAlaganandan Ganeshkumar
Life of this patent
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Abstract
A personal audio device configured to be worn on the head or body of a user and including a plurality of microphones configured to provide a plurality of separate microphone signals capturing audio from an environment external to the personal audio device, and a processor configured to process a first subset of the plurality of separate microphone signals using a first array processing technique to provide a first array signal, compare the first array signal to a microphone signal from the plurality of separate microphone signals, and select the first array signal or the microphone signal based on the comparison.
Claims18
A personal audio device configured to be worn on the head or body of a user, comprising:
- a plurality of microphones configured to provide a plurality of separate microphone signals capturing audio from an environment external to the personal audio device;
- and
- a processor configured to:
- process a first subset comprising a plurality of the separate microphone signals using a first array processing technique, to provide a first array signal;
- compare an energy level the first array signal to an energy level of a microphone signal from the plurality of separate microphone signals, wherein the comparison takes place only at frequencies of less than 1 kHz;
- and
- select the first array signal or the microphone signal based on the comparison.
A computer program product having a non-transitory computer-readable medium including computer program logic encoded thereon that, when performed on a personal audio device that is configured to be worn on the head or body of a user and comprises a plurality of microphones configured to provide a plurality of separate microphone signals capturing audio from an environment external to the personal audio device, causes the personal audio device to:
- process a first subset comprising a plurality of the separate microphone signals using a first array processing technique, to provide a first array signal;
- compare an energy level of the first array signal to an energy;
- level of a microphone signal from the plurality of separate microphone signals, wherein the comparison takes place only at frequencies of less than 1 kHz;
- and
- select the first array signal or the microphone signal based on the comparison.
A personal audio device configured to be worn on the head or body of a user, comprising:
- a plurality of microphones configured to provide a plurality of separate microphone signals capturing audio from an environment external to the personal audio device;
- and
- a processor configured to:
- process a first subset comprising a plurality of the separate microphone signals using a first array processing technique, to provide a first array signal;
- compare an energy level the first array signal to an energy level of each of the microphone signals, wherein the comparison takes place only at frequencies of less than 1 kHz;
- and
- select the first array signal or one of the microphone signals based on the comparison, wherein if the energy level of the first array signal at frequencies of less than 1 kHz is greater than the energy level of any of the separate microphone signals at frequencies of less than 1 kHz, the processor is configured to select the microphone with the lowest energy at frequencies of less than 1 kHz, and wherein if the energy level of the first array signal at frequencies of less than 1 kHz is less than the energy level of each of the separate microphone signals at frequencies of less than 1 kHz, the processor is configured to select the first array signal.
Dependencies are inferred from the claim text.