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DESIGN OF THE SENSORY SYSTEM FOR AUDIO SOURCE LOCALIZATION

ABSTRACT This paper deals with design of the sensory system for audio source localization using microphone array. It describes main requirements, hardware design of the microphone units with automatic gain control preamplifiers with integrated anti-aliasing filters and finally its connection to personal computer. Properties of designed sensory system were verified by real experiment in which standard personal computer equipped with Advantech PCI-1716 multifunction data acquisition card represented evaluation unit. For audio data acquisition and analysis was created software application with user-friendly graphical user interface which is able to visualize measured sound waves and perform frequency analysis. All acquired data from microphone units can be archived to the standard wav files for further investigation and analysis.