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digital PDM microphone

Question asked by DanZ on Apr 13, 2015
Latest reply on Apr 14, 2015 by DaveThib

If we cannot do anti-aliasing filtering for our desired sampling rate (8KHz) in the INMP421, is it possible to perform the anti-aliasing filter within the decimation subsystem within the ADAU7002 IC?  We need our signal in I2S format , so we will be using this chip anyways.  Will the digital decimation within the ADAU7002 take care of aliasing effects? A standard practice is to filter just before digitizing. [Edited for clarification of question.]