AudioPDM-MW, delivered as a PDM2PCM library, decimates and filters out a Pulse Density Modulated (PDM) stream from a digital microphone, to convert it to a Pulse Code Modulated (PCM) signal output stream.
The PCM output stream works at a sampling rate of 16 kHz with a 16-bit resolution. Various decimation factors are configurable, to adapt to variable PDM clock speeds.
The digital microphone gain is configurable at any time and allows 1 dB step in a range from -12 dB to +51 dB.
- Audio PDM-to-PCM conversion
- Little or big endianness filter
- Filter bit order LSB and MSB
- Filter decimation factor from 16 to 128
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