日本音響学会誌
Online ISSN : 2432-2040
Print ISSN : 0369-4232
模型実験によるホールの側壁拡散体の音の一様な減衰への寄与について
柳沢 武三郎二村 忠元
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ジャーナル フリー

1967 年 23 巻 1 号 p. 1-11

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It is discussed in this paper from the results of acoustic experiments made with three models of halls whether or not a diffusor fixed to the side wall of each model is useful for the uniform decay of a sound. The usefulness of the diffusor is judged on the basis of statistical significance by making an analysis of variation of a two-way layout regarding the standard devitation of reverberation time on two assumptions that the decay of a sound will be exponential in all places in the hall and the diffusor will be useful for the uniform distribution of a proper tone, if the sound field is in a satisfactory diffusive state. It may be fairly said from these results that a side wall diffusor is useful for the uniform decay of a sound at a level of significance of 1%, especially contributing to sounds in the low frequency range when a sound source is generally in the position where a lecturere stands in any hall.

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© 1967 一般社団法人 日本音響学会
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