While issues regarding the sweet spot in 5.1 surround sound have been discussed, a 22.2 multichannel sound system has been developed for ultrahigh-definition TV. One of its features is expansion of the listening area with exceptional sound quality. Although the wideness of listening area was reported in previous papers, its evaluation was performed using only sound clips of a symphony orchestra without a picture. Therefore, subjective evaluations were performed for comparing the impression of various spatial attributes at different listening positions using contents with pictures in both large and small rooms. These evaluations demonstrate that viewers have better impressions of various spatial attributes in a wider listening area with the 22.2 multichannel sound system than with other sound systems.
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