Direction-of-arrival and diffuseness estimation above spatial aliasing for symmetrical directional microphone arrays
作者： Archontis Politis , Symeon Delikaris-Manias , Ville Pulkki
DOI: 10.1109/ICASSP.2015.7177921
关键词: Broadband 、 Speech recognition 、 Aliasing 、 Noise-canceling microphone 、 Microphone array 、 Estimator 、 Physics 、 Acoustics 、 Limit (music) 、 Microphone 、 Direction of arrival
摘要: A method for direction-of-arrival (DOA) and diffuseness estimation is presented, which proves to be effective above the spatial aliasing frequency of microphone array in use. The assumes symmetrical circular or spherical arrays directional microphones mounted on a rigid baffle, it exploits inherent directionality at high frequencies. DOA estimators are shown exhibit low error limit, compared commonly used intensity-based estimators. low-error broadband scheme that combines new one proposed ranges below respectively.
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