Circumaural headphones are commonly used in binaural reproduction and it is well known that individual equalization of the headphones improves the quality of the reproduction. The suitability of insert headphones to binaural reproduction has not been studied partly due the lack of commonly accepted individual equalization method for insert headphones. Recently, a method to estimate the frequency response evoked by insert headphones has been presented. In this paper, the localization accuracy of test subjects is evaluated in binaural listening with insert headphones and high-quality circumaural headphones. The results show that the accuracy with inserts is similar to that with circumaural headphones when the recently proposed method is applied for equalization, which motivates their use in binaural reproduction.
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