LOUDSPEAKERS (AUDIO ENGINEERING)
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BTSOUND ENGINEERING + AUDIO ENGINEERING (ACOUSTICS)
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UDC621.395.623.7
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Descriptor GERLAUTSPRECHER (TONTECHNIK)
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Descriptor ENGLOUDSPEAKERS (AUDIO ENGINEERING)
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Descriptor FREHAUT-PARLEURS (TECHNIQUE D'ACOUSTIQUE)
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RTLOUDNESS (PHYSIOLOGICAL ACOUSTICS)