AN EVALUATION OF THE EFFECTS OF SCATTERED REFLECTIONS IN A SOUND FIELD
AN EVALUATION OF THE EFFECTS OF SCATTERED REFLECTIONS IN A SOUND FIELD
复制标题
声场中散射反射影响的评估
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
M. Oowaki
中科院分区：
文献类型：
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作者：
Y. Suzumura;M. Sakurai;Y. Ando;I. Yamamoto;T. Iizuka;M. Oowaki
摘要本文提出并应用了一个涉及散射反射的音乐厅声场评价方法。我们采用了实验的方法，使用了音乐厅的1/10比例模型。圆形圆柱阵列被放置在墙的前面，作为散射障碍。在有和没有圆形圆柱阵列的情况下，测量了大厅的声学特性。在这里，通过四个正交的物理因素来评估散射声场的质量：声压级（SPL）、直接声与第一次反射之间的初始时滞间隙（Δt1）、后续混响时间（Tsub）和耳间相互关联函数（IACC）的大小。圆形圆柱阵列改善了舞台中央座位和圆柱附近座位区域的IACC。
Abstract In this paper we outline and apply a procedure to evaluate sound fields in a concert hall which involve scattered reflections. We adopted an experimental method and used a 1/10 scale model of the concert hall. Arrays of circular columns were placed in front of its walls to act as the scattering obstacles. The acoustic properties of the hall were measured both with and without the arrays of circular columns. Here, the quality of the scattered sound field was evaluated in terms of four orthogonal physical factors: sound pressure level (SPL), initial time-delay gap between the direct sound and the first reflection (Δt1), subsequent reverberation time (Tsub), and magnitude of the interaural cross-correlation function (IACC). The IACC at central seats near the stage and seating area near the columns were improved by the arrays of circular columns.