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There are various ways to deal with this kind of things: The one I would go with: send it back to the speaker and say that it is unusable and he has to make a better recording. Do help in setting up equipment and room and such better. Use specialized tools: plugins for handling scratches in copied vinyl recordings might be something to look for. Izotope RX ...


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This is of necessity vague. Without actually hearing it, it's hard to say with any precision. Compression may remove the worst of it, multi-band compression may allow you to fine-tune to those frequencies. Some training & technique might go towards avoiding the issue in future, correct distance, pop-shielding - though I've never known any decent mic make ...


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