The evaluation method of auditoria with simulated sound field in consideration of acoustic perception in concert

本研究的目的是提出一个现实的新方法来评估的声场与主观感受的措施，在音乐会上的合并。在消声室中利用三维模拟声场进行了一系列心理声学实验，研究了后至声的方向性特征与听者感知距离（LEV）的关系。研究结果表明：（1）单一方向性成分的迟至声能量对LEV的贡献程度适用于实际的多方向性成分迟至声的情况。(2)In在混响时间较长（2.5s）的情况下，方向性延迟能量比（DLR）对LEV的贡献程度与混响时间较短的情况一样，按横向、后部和顶部的顺序增加。（3）对于LEV，后期开销和反向能量比率在70%至90%的比率下是有效的。 ...更多信息 横向能量比效应混响时间越长，DLRs对LEV的贡献程度差异越小。（4）当用在实际霍尔斯中测量的真实的脉冲响应作为激励时，DLR与LEV之间的关系与用人工简单脉冲响应时得到的结果是一致的。（5）根据心理声学实验结果和实测的DLR，计算了实际霍尔斯的LEV强度，并对实际霍尔斯的LEV特性进行了检验。结果表明，不同座位对LEV的感知存在显著差异，且LEV感知范围因霍尔斯的客观属性而异。这表明，考虑DLR和LEV是重要的音乐会的评价。（6）通过客观测量，明确了舞台区反射声的方向性，以便在舞台声学主观实验中加以利用。少

The purpose of this study is to propose a realistic new method for evaluating the sound field of auditoria with incorporation of the measure for subjective impression perceived in concert. A series of psychoacoustic experiments were conducted with three-dimensional simulated sound fields in an anechoic chamber, especially in order to investigate the relation between the directional characteristics of late arriving sound and perceived listener envelopment (LEV). The results are as follows ; (1)The degree of the contribution of late energy with a single directional component to LEV is applicable to the realistic case when late arriving sounds consist of plural directional components. (2)In the case of longer reverberation of 2.5 sec, the degree of contribution of directional late energy ratio (DLR) to LEV increases in order of lateral, back and overhead, as in the case of shorter one. (3)The late overhead and back energy ratios are effective for LEV at the rate of 70 to 90 percent of the … More effect of lateral energy ratio. The difference among the degrees of contribution of DLRs to LEV becomes smaller when reverberation time is longer. (4)When the real impulse responses, measured in actual halls, are used as stimuli, the same result about the relation between DLRs and LEV is approved as obtained when the artificial simple impulse responses are used. (5)The strength of LEV for actual halls is calculated based on the results of psychoacoustic experiments and measured DLR, and the characteristics of LEV in actual halls are examined. The result shows that significant differences in perception of LEV are found in the different seats and its range differs according to the objective properties of halls. These indicate that the consideration of DLR and LEV is important for the evaluation of concert auditoria. (6)The directional properties of reflections in the stage area are also clarified through the objective measurements in order to utilize them in subjective experiments for stage acoustics. Less