Novel concept for a MEMS microphone with dual channels for an ultrawide dynamic range

We develop a novel MEMS microphone with a wide dynamic range. The microphone has two channels and consists of two condensers, a single diaphragm and a backplate. Each channel has a different role. The Normal channel has higher sensitivity and an intermediate dynamic range, whereas the High channel has lower sensitivity and a higher dynamic range. By switching the two channels to correspond to sound pressure levels, the device can act as a single-channel microphone in digital signal processors.