Microphone leakage is problem that sound engineers face every day. Leakage complicates audio editing, processing, and mixing, and it is a well known problem in drum recordings. To this day, sound engineers have only a limited amount of options available in order to address this problem. These mostly consist of simple and empirical methods. A novel technology that addresses the problem of microphone leakage in multichannel drum recordings is presented here. In addition we discuss the problem definition as deduced from the specific properties of drum recordings, as well as the resulting signal processing framework.
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