In this paper we propose a new 3D sound system in two-layers as a matrix that has five loudspeakers on each side of the listener. The system is effective for sound localization and compact for personal use. Sound images in this system are created by extended amplitude panning method, with the effect of head-related transfer functions (HRTFs). Performance evaluation of the system for sound localization was made by auditory experiments with listeners. As the result, listeners could distinguish sound image direction localized at any azimuth direction and high elevation direction with small biases.
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