Speech source 2D DOA estimation algorithm based on random microphone array

The speech source localization technology based on microphone array had been researched and a far-field signal model based microphone array was obtained. The two dimensions (2D, plane angle and polar angle) speech source DOA estimation algorithm had been proposed by combining this model and subspace methods. Using the MATLAB, several type of array structure was contrastively analyzed. Two kinds of new microphone array, 3D uniform spherical surface array and 3D uniform linear array were designed to 2D-DOA estimation because of ambiguity DOA of the uniform linear microphone array. Simulation results show the high performance of the DOA estimation is given when the proposed algorithm is used in planar uniform circle array, 3D uniform spherical surface array and 3D uniform linear array.