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In this paper, we propose a simple calibration method for an ad hoc microphone array that utilizes sound emissions. Assuming that each device has a function to record sound while emitting another sound, the location, the recording time offset, and the sampling frequency mismatch of each device are estimated from the time of arrival (TOA) of the sound emitted by each device. The accurate estimation...
Source separation using an ad hoc microphone array can be useful for enhancing speech in such applications as teleconference systems without the need to prepare special devices. However, the positions of the sources (and the microphones when using an ad hoc microphone array) can change during recording, thus violating the commonly made assumption in many source separation algorithms that the mixing...
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