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Development of panel loudspeaker system: Design, evaluation and enhancement

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FIG. 2. Coordinate system for sound radiation analysis. 共a兲 Spatial domain;
FIG. 3. Sound radiation of a vibrating panel with an aperture 0.2 m. The figures in the upper part are the velocity spectra in wave number domain, while the figures in the lower part are the polar radiation patterns
FIG. 5. Predicted force response of the exciter with 1 V rms electrical input.
FIG. 8. Predicted frequency response of the vibrating panel between the force input and sound pressure output at 1 m on-axis distance.
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