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Design and implementation of a flexible and low-budget acoustic treatment for a reference listening room

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Audio reproduction quality depends on system qualities as well as on acoustic properties of the room, which can be controlled by appropriate acoustic treatment. The goal of our project was to adapt a 9 x 6 x 3 m shoe box shaped room, not initially intended for audio purposes, so that it could be used as a reference listening room in a range of applications requiring various acoustic conditions from live to dead. The treatment was based on the extensive use of wideband porous absorbers. Initially the room was too reverberant for audio purposes and produced intolerable flutter echo. Finally, we obtained reverberation time of 0.45 s in 63 Hz third octave band and a nearly flat reverberation time curve above 125 Hz, at the value of 0.2 s.

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AES - Audio Engineering Society