Hi SunnySingh
I did not find a directly way to pause/resume audio recording while using mediaCapture API.
However base on Rob's explanation:
https://social.msdn.microsoft.com/Forums/windowsapps/en-US/841e67ec-680b-4d83-a610-b692db0ec387/mediacapture-pausingresuming-capture, you can make multiple recordings and play them one by one or make them together after the recording is finished.
--James
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Thanks
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