Abstract
First, in a state where a pair of earphones 110 are worn in both ears of a listening person, a measurement signal generated by a measurement signal generating section 101 is outputted from the earphone 110 . The signal (wearing-state signal) which is reflected by an eardrum and returns to the earphone 110 is measured, and stored in an analysis section 108 . Next, in a state where the pair of earphones 110 are not worn in both ears of the listening person, a signal measured (unwearing-state signal) in the same manner as described above is stored in the analysis section 108 . The analysis section 108 calculates an ear-canal correction filter based on a difference between the wearing-state signal and the unwearing-state signal. An ear-canal correction filter processing section 109 convolves a sound source signal with the calculated ear-canal correction filter.
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