Method and apparatus for providing sidetone feedback notification to a user of a communication device with multiple microphones
First Claim
1. A communication device for providing a sidetone signal that is based on a signal produced by a primary microphone, said device comprising:
- a first microphone for producing a first input audio signal from a user;
a second microphone for producing a second input audio signal from the user;
a signal combiner that comprises a first gain adjuster arranged to apply a first gain to a first audio signal to produce a first combiner signal and a second gain adjuster arranged to apply a second gain to a second audio signal to produce a second combiner signal and is configured to combine the first and second combiner signals to produce a combined signal; and
a source separator that is separate from said signal combiner and is configured to produce a separated speech signal that is based on the first and second audio signals,wherein the first audio signal is based on the first input audio signal, the second audio signal is based on the second input audio signal, and the sidetone signal is based on the combined signal, andwherein at least one of said first and second gains is based on an indication of which between said first and second microphones is the primary microphone.
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Accused Products
Abstract
A communication device including multiple microphones is provided. The communication device includes at least two microphones. The communication device further includes a sidetone feedback notifier for producing a notification signal. The sidetone feedback notifier is coupled to the microphones. The notification signal is based on the combination of, a first input audio signal provided for by a first microphone, and a second input audio signal provided for by a second microphone. The sidetone feedback notifier is coupled to a notification device for providing a feedback signal to a user based on the notification signal.
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Citations
48 Claims
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1. A communication device for providing a sidetone signal that is based on a signal produced by a primary microphone, said device comprising:
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a first microphone for producing a first input audio signal from a user; a second microphone for producing a second input audio signal from the user; a signal combiner that comprises a first gain adjuster arranged to apply a first gain to a first audio signal to produce a first combiner signal and a second gain adjuster arranged to apply a second gain to a second audio signal to produce a second combiner signal and is configured to combine the first and second combiner signals to produce a combined signal; and a source separator that is separate from said signal combiner and is configured to produce a separated speech signal that is based on the first and second audio signals, wherein the first audio signal is based on the first input audio signal, the second audio signal is based on the second input audio signal, and the sidetone signal is based on the combined signal, and wherein at least one of said first and second gains is based on an indication of which between said first and second microphones is the primary microphone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of generating a sidetone signal to a communication device user that is based on a signal produced by a primary microphone, said method comprising:
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obtaining a first audio signal coupled to an output from a first microphone from the user; obtaining a second audio signal coupled to an output from a second microphone from the user; performing a signal combining operation that includes applying a first gain to a first audio signal to produce a first combiner signal, applying a second gain to a second audio signal to produce a second combiner signal, and combining the first and second combiner signals to produce a combined signal; and performing a source separation operation that is separate from said signal combining operation to produce a separated speech signal that is based on the first and second audio signals, wherein the sidetone signal is based on the combined signal, and wherein at least one of said first and second gains is based on an indication of which between said first and second microphones is the primary microphone. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A communication device for providing a sidetone signal that is based on a signal produced by a primary microphone, said device comprising:
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means for obtaining a first audio signal coupled to an output from a first microphone from a user; means for obtaining a second audio signal coupled to an output from a second microphone from the user; means for performing a signal combining operation that includes applying a first gain to the first audio signal to produce a first combiner signal, applying a second gain to the second audio signal to produce a second combiner signal, and combining the first and second combiner signals to produce a combined signal; and means for performing a source separation operation that is separate from said signal combining operation to produce a separated speech signal that is based on the first and second audio signals, wherein the sidetone signal is based on the combined signal, and wherein at least one of said first and second gains is based on an indication of which between said first and second microphones is the primary microphone. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A non-transitory computer-readable medium embodying a set of instructions, executable by one or more processors, for generating a sidetone signal that is based on a signal produced by a primary microphone, comprising:
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code for obtaining a first audio signal coupled to an output from a first microphone from a user; code for obtaining a second audio signal coupled to an output from a second microphone from the user; code for performing a signal combining operation on the first and second audio signals; and code for performing a source separation operation that is separate from said signal combining operation to produce a separated speech signal that is based on the first and second audio signals, wherein said signal combining operation comprises; applying a first gain to the first audio signal to produce a first combiner signal; applying a second gain to the second audio signal to produce a second combiner signal; and combining the first and second combiner signals to produce a combined signal, and wherein the sidetone signal is based on the combined signal, and wherein at least one of said first and second gains is based on an indication of which between said first and second microphones is the primary microphone. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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38. A communication device for generating a sidetone signal, said device comprising:
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a first microphone for producing a first input audio signal from a user; a second microphone for producing a second input audio signal from the user; a signal combiner that comprises a first gain adjuster arranged to apply a first gain to a first audio signal to produce a first combiner signal and a second gain adjuster arranged to apply a second gain to a second audio signal to produce a second combiner signal and is configured to combine the first and second combiner signals to produce a combined signal; and an echo canceller configured to reduce an echo in a signal that is based on the first input audio signal and to produce an echo return loss enhancement signal, wherein the first audio signal is based on the first input audio signal, the second audio signal is based on the second input audio signal, and the sidetone signal is based on the combined signal, and wherein at least one among the first gain, the second gain, and a gain applied to the combined signal is based on a level of the echo return loss enhancement signal. - View Dependent Claims (39, 40, 41, 42, 43)
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44. A communication device for generating a sidetone signal, said device comprising:
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means for obtaining a first audio signal coupled to an output from a first microphone from a user; means for obtaining a second audio signal coupled to an output from a second microphone from the user; means for performing a signal combining operation that includes varying an amplitude level of the first audio signal to produce a first combiner signal, varying an amplitude level of the second audio signal to produce a second combiner signal, and combining the first and second combiner signals to produce a combined signal; and means for reducing an echo in a signal that is based on the first input audio signal and producing an echo return loss enhancement signal, wherein the sidetone signal is based on the combined signal, and wherein an amplitude level of at least one among the first combiner signal, the second combiner signal, and the combined signal is based on a level of the echo return loss enhancement signal. - View Dependent Claims (45, 46, 47, 48)
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Specification