Abstract
Passive acoustic source localization system increasingly becomes small and portable with the rapid development of the computer technology, integrated circuit, microelectronics technology and embedded system, et al. In this sense, we complete the hardware design of a small portable passive acoustic source localization system based on a five-element cross microphone array. In the conditions of meeting the system sampling requirements, the established system hardware is simple, small and portable, as well as the total size of the signal preprocessing and control part is only 15.3 × 22.5 (cm). The hardware part mainly includes the design of the five-element cross microphone array, signal preprocessing circuit and micro controller unit (MCU). Finally, circuit testing and zero input calibration show that the whole hardware part not only is feasible but also has good performance.
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