Respeaker 6mic channel along with added mIc through USB

I have purchased the ReSpeaker 6-Mic Circular Array kit for the Raspberry Pi module. The 6-channel speech data in ‘.wav’ format is able to export through audacity. I needed one more channel for a mic connected through USB that can be accessed as the 7th or 8th channel in audacity software.

Hoping early positive response.

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