Elevated Control Transducers for Virtual Acoustic Imaging.
In order to examine the characteristics of various elevation positions of the control transducers for binaural reproduction over loudspeakers, an analysis is performed of both the spectral and dynamic cues that relate to localisation. The frequency response of the plant that relates transducer outputs to ear pressure signals suggests that control transducer positions will be promising at positions in the frontal plane above the listener's head. The analysis of the dynamic cues induced by unwanted head rotation also strongly supports the use of transducer locations in the frontal plane. A subjective experiment is performed and the control transducer location above the head clearly shows an advantage with respect to the robustness against the transmission of false dynamic information.
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