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In this paper, we propose spatial localization of multiple sound sources using a spherical robot head equipped with four microphones. We obtain arrival time differences using phase difference candidates. Based on the model of precedence effect, arrival temporal disparities obtained from the zero-crossing point are used to calculate time differences and suppress the influence of echoes in a reverberant...
Based on the human auditory system for spatial localization theory, we proposed a spatial localization of multiple sound sources using a spherical robot head. Space sound vectors recorded by a microphone array with spatial configuration, are used to estimate the histograms of spatial arrival time difference vectors by solving the simultaneous equations in different frequency bands. The echo avoidance...
A process for the manufacture of zeolite crystal membranes comprises impregnating Al 2 O 3 substrates with slurries containing zeolite crystals in binder solutions; optionally washing and drying the substrates; and hydrothermally reacting the substrates containing adhered zeolite crystals by immersion in a solution containing zeolite precursor raw materials. The binders may be water...
To investigate a possibility of carbon dioxide (CO 2 ) clathrate for the fixation of CO 2 in the deep ocean, experiments for CO 2 clathrate formation, sedimentation and dissolution were performed at the temperatures from 277 to 290K, and the max pressure of 39MPa using pure water or artificial seawater. Furthermore, simulations for CO 2 sedimentation in the deep ocean...
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