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This paper proposes a personal audio reproduction system that uses a loudspeaker array and is worn around the neck. Our proposed system aims not only to provide good quality of desired sound to the listener but also to reduce the sound energy outside the individual in three-dimensional space using a non-uniform circular loudspeaker array. This loudspeaker array has four units in the front beside each ear and five units in the back along the neck. First, we measured the impulse response between each loudspeaker unit and specific control points around the listener and the listener’s ear positions while the loudspeaker system was mounted around a dummy head in an anechoic chamber. Next, we designed filter coefficients to reduce the sound pressure level at control points and while maintaining the sound pressure levels at the ear positions using the least-squares (LS) method. Finally, we attempted to control the sound pressure level in three-dimensional space although using the two-dimensional circular loudspeaker array. We will present the comparison results for two cases, namely, only the frontal loudspeaker units are used and no dummy head is present.
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