[#20] PDM Microphones - Audio DSP On STM32 (16 Bit / 48 kHz)

In this video I want to show you, how you can interface a PDM microphone to the STM32 microcontroller and how to reconstruct the PDM bitstream into a PCM stream in order to output it via I2S to an external DAC.

5:47 System Overview
9:34 Cube-MX Config
13:22 Code Review
17:41 Live Demo

See the GitHub project here:
https://github.com/YetAnotherElectronicsChannel/STM32_PDM_Microphone

Check out ST's AppNote for more information:
https://www.st.com/resource/en/application_note/dm00380469-interfacing-pdm-digital-microphones-using-stm32-mcus-and-mpus-stmicroelectronics.pdf
Used hardware:

Pmod I2S2 Stereo In/Out Board
https://store.digilentinc.com/pmod-i2s2-stereo-audio-input-and-output/

STM32F407G-DISC1 Evalboard
https://www.digikey.de/short/pd8tnp

Видео [#20] PDM Microphones - Audio DSP On STM32 (16 Bit / 48 kHz) канала YetAnotherElectronicsChannel