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STEVAL-MKI116V1 Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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STEVAL-MKI116V1 Scheda tecnica(HTML) 1 Page - STMicroelectronics |
1 / 5 page For further information contact your local STMicroelectronics sales office. March 2012 Doc ID 022999 Rev 1 1/5 5 STEVAL-MKI116V1 MEMS microphone demonstration board based on the MP34DB01 and STM32 Data brief Features ■ Powered and connected to PC through USB ■ Sound card automatically recognized by the PC as an audio device ■ The onboard microphones are digital MEMS devices ■ MEMS microphones provide a high frequency data stream (1 to 3.25 MHz) of 1-bit digital samples (PDM technique) ■ Audio collected from the microphones is sent to the PC through the USB ■ LED status indicator ■ RoHS compliant Description The purpose of the STEVAL-MKI116V1 demonstration board is to provide an example of the decoding and streaming of digital MEMS microphone outputs. The STEVAL-MKI116V1 demonstration board hosts the MP34DB01 (bottom-port digital microphone), working 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-MKI116V1 demonstration board is a sound card 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 collected audio. www.st.com |
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