We propose and fabricate the simple sound localization system based on the biological auditory system. The fabricated system is constructed with the simple complementary metal oxide semiconductor (CMOS) circuit for detecting sound localization, two microphones as the input part, the photodiode, the motor and the rotation table. Particularly, the CMOS circuit is proposed in this study by mimicking the information processing of the auditory system. The test circuit applied to the system was fabricated by using the simple discrete metal oxide semiconductor (MOS) transistors on the breadboard. The measured results of the test circuit showed that the circuit can generate the signals for detecting the position of the sound of the target. The experimental results of the test system showed that the system can detect the position of the target. After detecting the position of the target, the system tracked the target and captured the target. We can realize novel target tracking system and sensor by applying the proposed system based on the biological auditory system.

sound localization, auditory system, tracking system, analog circuit, digital circuit.