厅堂音质参量IACC测量的影响因素分析

厅堂音质设计所依据的各参量中,双耳互相关系数（Inter-aural Cross Correlation Coefficient,IACC）被认为是可以较好描述主观空间感的客观参量。IACC的实际测量结果受诸多因素的影响,各种因素的影响程度及对测量的限制目前尚无定论。对IACC测量中最为直接的影响因素,包括人工头制作、双耳转动方向、声源信号、滤波频带等,进行实测并对结果做对比分析。实验表明各种因素对IACC测量值都有不同程度的影响,在实际厅堂测量时需要注意这些影响。

Analysis on the factors affecting the IACC measurement in halls

Among several acoustical parameters,it is well known that Inter-aural cross correlation coefficient (IACC) has a strong relationship with spatial impression.Many factors affect the measurement of IACC,but it is still unclear how much these factors influence the measurement result.From this view,the paper presents several most direct factors in measurement,including dummy head,ears orientation,and sound source signal filter band,to compare and analyze the measurement result.The experiments show that differen...