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How to Take Absorptive Surfaces into Account When Designing Outdoor Sound Reinforcement Systems

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When sound reinforcement systems are used outdoors, absorptive surfaces are usually present along the propagation path of the sound. This may lead to a very significant coloration of the spectrum received by the audience. The coloration depends on the location and directivity of the loudspeaker, the nature of the absorptive surface (e.g., grass), and the location of the audience.

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AES - Audio Engineering Society