STEVAL-MKI116V1,演示板提供数字
MEMS 麦克风输出的解码和流传输示例。 STEVAL-MKI116V1 演示板包含用作传感器的 MP34DB01(底部端口数字麦克风)和用作音频解码器的 STM32F107RC
微控制器。这些麦克风是
模数转换器。他们能够感测声压并使用 PDM 技术将该信号转换为数字信号。 STM32 微
控制器对来自麦克风的 PDM 信号进行解码并通过 USB 传输音频。 STEVAL-MKI116V1演示板是一个被PC自动识别为音频设备的声卡。通过 USB 电缆进行连接,该电缆还为电路板供电,然后传输收集的音频
说明
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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