PCMD3140-Q1: pcmd3140 audio acquisition distortion

Part Number: PCMD3140-Q1
Other Parts Discussed in Thread: PCMD3140

hello!

There are three pcmd3140 chips on my device, each connected to two microphones. everyone The audio collected is distorted, and I have no idea what is causing this issue. Please help me figure out the root cause, thank you! The audio file, circuit diagram and register settings are as follows: 

org_zl_260204.wav org_zl_260203.wav 

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