Patent ID: 7944130

Claim:
A sound source localization apparatus comprising: at least two multi-cantilever MEMS sensors, each comprising a plurality of cantilevers each of which includes a piezoresistor and a sensing part for sensing a predetermined signal generated according to the piezoresistor, and a terminal for detecting the signal generated according to the piezoresistor, wherein one end of each cantilever is a free end and the other end thereof is a fixed end of each cantilever, the piezoresistor and the sensing part are formed at the fixed end, and the free ends of the plurality of cantilevers have different lengths; an electric circuit for detecting signals generated from corresponding cantilevers of the multi-cantilever MEMS sensors and counting a TDOA from a sound source to the at least two multi-cantilever MEMS sensors; and a position estimator for localizing the sound source position from the TDOA; the electric circuit comprising a signal amplifier for amplifying the signals generated from the corresponding cantilevers of the at least two multi-cantilever MEMS sensors to a predetermined level, a filter for removing noise from the amplified signals, and a trigger for processing the noise-free signals into square-wave signals.