STEVAL-MKI138V3, STAudioHub USB Interface Evaluation Board based on MP45DT02 and STM32

STEVAL-MKI138V3, STAudioHub Evaluation Board is to demonstrate the decoding and streaming performance of digital MEMS microphone outputs. The STEVAL-MKI138V3 hosts the MP45DT02 top-port digital microphone, which works as a sensor, and the STM32F107RC microcontroller, working as an audio decoder. These microphones are analog-to-digital transducers. They are able to sense sound pressure and convert this signal into a digital signal using the PDM technique. The STM32 microcontroller decodes the PDM signal coming from the microphones and streams the audio via the USB. The STEVAL-MKI138V3 evaluation board is a sound card which is automatically recognized by a 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