STEVAL-MKI138V2, STAudioHub USB Interface Board based on the MP34DB01 and STM32 MCU

STEVAL-MKI138V2, Evaluation Board is to provide an example of decoding and streaming of digital MEMS microphone outputs. The STEVAL-MKI138V2 evaluation board hosts the MP34DB01 (top-port digital microphone), working as a sensor and the STM32F107RC microcontroller as an audio decoder. These microphones are analog-to-digital transducers. They are capable of sensing sound pressure and converting this signal into a digital signal using the PDM technique. The STM32 microcontroller decodes the PDM signal from the microphones and streams the audio via USB. The STEVAL-MKI138V2 evaluation board is a sound card that is automatically recognized by the PC as an audio device. Connection is made through a USB cable, which also supplies the board and then streams the audio collected from the microphones to the PC