Arecord always had a plosive sound at begining

There is a plosive sound at begining of arecord. we test the singal ,it had a pulse at begining, we didn’t know why.
Help to analyze it.

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.

Have clarified where the plosive sound came from?

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