EXTERNAL SOUND PERCEIVING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an external sound perceiving apparatus for accurately sensing a direction of a sound source. SOLUTION: The external sound perceiving apparatus 1 comprises: an oscillation signal generating means 20 for individually generating an oscillation signal by modulating a carrier signal of an ultrasonic wave based on sound signals inputted to directional microphones 10, 10 and a plurality of oscillators 30 for transmitting ultrasonic vibrations to a living body according to the oscillation signal. The oscillation signal generating means 20 comprises a parameter calculating means 21 for acquiring a spatial characteristic parameter by calculating a level difference and/or a time difference of sound signals between the plurality of directional microphones 10, 10, and an output correcting means 24 for correcting at least one of the vibration signals based on the spatial characteristic parameter. COPYRIGHT: (C)2009,JPO&INPIT