Apparatus and method for estimating the direction of arrival of a source signal using a microphone array

摘要

An apparatus for estimating the direction of arrival ("DOA") of a source signal includes microphones for transducing the source signal, amplifiers in signal communication with a corresponding one of the microphones, analog-to-digital converters in signal communication with a corresponding one of the amplifiers, and a digital processor in signal communication with the analog-to-digital converters for estimating the direction of arrival of the source signal; where a corresponding method for estimating the DOA of the source signal at one of several microphones includes estimating the measured signal spectral covariance matrix ("Rx"), and estimating the angle of the DOA responsive to the measured signal spectral covariance matrix.