Voice sensing using multiple microphones
AssigneeBose Corporation
InventorsDaniel M. Gauger, Jr., Jahn Dmitri Eichfeld, Steven H. Isabelle, John Allen Rule
Life of this patent
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Abstract
A noise cancelling headset includes an earpiece, the earpiece including a feedback microphone, a feed-forward microphone, and an output driver. A first feedback filter receives an input from at least the first feedback microphone and produces a first filtered feedback signal. A first feed-forward filter receives an input from at least the first feed-forward microphone and produces a first filtered feed-forward signal. A first summer combines the first filtered feedback signal and the first filtered feed-forward signal and produces a first output signal. An output interface provides the first output signal as an output from the headset.
Claims10
A noise cancelling headset comprising:
- an earpiece comprising a first feedback microphone, a first feed-forward microphone, and an output driver;
- a noise cancellation system comprising, for each earpiece,
- a noise cancellation feedback filter receiving an input from at least the first feedback microphone and producing a noise cancellation filtered feedback signal;
- a noise cancellation feed-forward filter receiving an input from at least the first feed-forward microphone and producing a noise cancellation filtered feed-forward signal;
- a noise cancellation summer combining the noise cancellation filtered feedback signal and the noise cancellation filtered feed-forward signal and producing a noise cancellation output signal;
- a feedback voice filter receiving an input from at least the first feedback microphone and producing a voice-filtered feedback signal;
- a first feed-forward voice filter receiving an input from at least the first feed-forward microphone and producing a first voice-filtered feed-forward signal;
- a voice summer combining the voice-filtered feedback signal and the first voice-filtered feed-forward signal and producing a voice output signal representing the voice of a user of the headset;
- and
- a communications interface providing the voice output signal as a voice output from the headset.
A method of generating a voice communication signal in an in-ear noise cancelling headset comprising an earpiece, the earpiece comprising a feedback microphone, a feed-forward microphone, and an output driver, the method comprising:
- filtering an input from the feedback microphone to produce a noise cancellation filtered feedback signal;
- filtering an input from the feed-forward microphone to produce a noise cancellation filtered feed-forward signal;
- combining at least the noise cancellation filtered feedback signal and the noise cancellation filtered feed-forward signal to produce a noise cancellation output signal;
- filtering the input from the feedback microphone to produce a voice-filtered feedback signal;
- filtering the input from the feed-forward microphone to produce a voice-filtered feed-forward signal;
- combining at least the voice-filtered feedback signal and the voice-filtered feed-forward signal to produce a voice output signal representing the voice of a user of the headset;
- and
- outputting the voice output signal as the voice communication signal.
Dependencies are inferred from the claim text.