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Time/Frequency Response of a Room with Active Acoustic Absorption

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Decay spectra are presented which describe the control of normal modes of an enclosed sound field using active absorbers. The visualization techniques are introduced in the context of a resonant waveguide and extended to investigate the acoustics of a small reverberant room. Results demonstrate that active absorbers offer a practical solution to the problems introduced by discrete low-frequency modes.

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AES - Audio Engineering Society