Electroacoustic reverberation control system is used mainly in multi-purpose auditorium and concert halls whose acoustical design is not ideal for music performance. The present paper discusses the use of loudspeaker arrays for electroacoustical reverberation control in an auditorium, especially the effect of using multiple loudspeakers on listening area. Subjective experiments were conducted with various loudspeaker setups and various listening points, including off-center ones, in our new auditorium equipped with seven vertical line arrays on each sidewall. The results of this subjective evaluation were compared with measurements of the sound pressure distribution created by corresponding loudspeaker setups and were used to infer a criterion for setting loudspeakers to provide a large listening area.
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