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I want to interface a condenser microphone with my stm32f407vg discovery board and obtain the audio output through the DAC audio jack. For the audio processing should I first convert the input digital data into PDM form and further process it using PCM before sending to output or is just sampling of the input ADC data sufficient? I have studied a program which uses the built in MEMS microphone which automatically produces the PDM form of data to the board.

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