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- W2897330915 abstract "A planar, broadside acoustic array with uniform loudspeaker spacing is often adopted for generating a highly directional acoustic beam, but the performance in radiated power and spatial bandwidth should always compromise with the transverse size limit. To achieve a high-power, directional sound in a compact size, a multi-layered loudspeaker array configured in both broadside and end-fire types is devised. This design concept is tested with an array of 3 layers with 0.2 m spacing. Each layer contains 7 loudspeakers in a centrally symmetric arrangement on a plane with the longest dimension of 0.6 m. In each layer, the separation distance between loudspeakers is uniformly set as 0.2 m. The optimal beamforming method is employed for calculating the control filter. The compensation for the performance degradation due to self-scattering effect is also included in the control filter, for which the additional phase delay due to scattering is estimated from the simulated response of the array system. The maximum sound level at 1 m distance from the array center is achieved as 145 dB at 1.5 kHz, and, at 30 m position, the level decrease of 26–30 dB with the directivity index of 15 dB is observed for 1–5 kHz." @default.
- W2897330915 created "2018-10-26" @default.
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- W2897330915 date "2018-09-01" @default.
- W2897330915 modified "2023-10-18" @default.
- W2897330915 title "Beamforming loudspeaker array in a multi-layered configuration" @default.
- W2897330915 doi "https://doi.org/10.1121/1.5068255" @default.
- W2897330915 hasPublicationYear "2018" @default.
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