Method and device for acoustic management control of multiple microphones
First Claim
1. A method for acoustic management control suitable for use in an earpiece, the method comprising the steps of:
- capturing an ambient acoustic signal from at least one Ambient Sound Microphone (ASM) to produce an electronic ambient signal;
determining a background noise signal from the electronic ambient signal;
estimating a voice activity level from the electronic ambient signal; and
adjusting a characteristic of the electronic ambient signal as a function of the voice activity level and the background noise signal to produce an adjusted signal.
19 Assignments
0 Petitions
Accused Products
Abstract
An earpiece (100) and a method (640) for acoustic management of multiple microphones is provided. The method can include capturing an ambient acoustic signal from an Ambient Sound Microphone (ASM) to produce an electronic ambient signal, capturing in an ear canal an internal sound from an Ear Canal Microphone (ECM) to produce an electronic internal signal, measuring a background noise signal, and mixing the electronic ambient signal with the electronic internal signal in a ratio dependent on the background noise signal to produce a mixed signal. The mixing can adjust an internal gain of the electronic internal signal and an external gain of the electronic ambient signal based on the background noise characteristics. The mixing can account for an acoustic attenuation level and an audio content level of the earpiece.
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Citations
31 Claims
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1. A method for acoustic management control suitable for use in an earpiece, the method comprising the steps of:
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capturing an ambient acoustic signal from at least one Ambient Sound Microphone (ASM) to produce an electronic ambient signal; determining a background noise signal from the electronic ambient signal; estimating a voice activity level from the electronic ambient signal; and adjusting a characteristic of the electronic ambient signal as a function of the voice activity level and the background noise signal to produce an adjusted signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for acoustic management control suitable for use in an earpiece, the method comprising the steps of:
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capturing an ambient acoustic signal from at least one Ambient Sound Microphone (ASM) to produce an electronic ambient signal; detecting a spoken voice signal generated by a wearer of the earpiece from the electronic ambient signal; determining a background noise level from the electronic ambient signal when the spoken voice signal is not detected; generating a voice activity level of the spoken voice signal; and adjusting a characteristic of the electronic ambient signal as a function of the voice activity level and the background noise level to produce an adjusted signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An earpiece system for acoustic management control, comprising:
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at least one Ambient Sound Microphone (ASM) configured to capture ambient sound and produce an electronic ambient signal; an Ear Canal Receiver (ECR) to deliver audio content to an ear canal to produce an acoustic audio content; and a processor operatively coupled to the at least one ASM and the ECR where the processor is configured to detect a spoken voice signal generated by a wearer of the earpiece from the electronic ambient signal; determine a background noise signal from the electronic ambient signal when a spoken voice signal is not detected; generate a voice activity level of the spoken voice signal; and adjust a characteristic of the electronic ambient signal dependent on the voice activity level and the background noise signal to produce an adjusted signal. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification