This project forked from y2kblog/nucleo-l476rg_dfsdm_pdm-mic
This project acquires the PDM (Pulse Density Modulation) microphone signal using DFSDM (Digital filter for Sigma-Delta modulators interface) function of STM32 MCU and outputs its frequency characteristics by using FFT.
This project acquires the PDM (Pulse Density Modulation) microphone signal using DFSDM (Digital filter for Sigma-Delta modulators interface) function of STM32 MCU and outputs its frequency characteristics by using FFT.
Software CIC filter with SPI is here.
STM32CubeIDE
SPH0641LU4H-1 (Knowles)
Here is breakout board
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