Method and device for acoustic management control of multiple microphones

摘要

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.

主权项

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.