【摘要】 传声器的指向性对声场方向性分布的测量有很大影响.文中给出了测量得的和原声场的声能方向分布间的关系.根据测量的分布可推知被测声场方向性分布中的某些成分.所能得知的声场情况受传声器指向性的限制.由上述关系,也可分析传声器指向性对声场方向性分布不均匀度的测量值的影响.更多还原

【Abstract】 The directional characteristic of microphone is an important factor in the measurement of directional distribution of sound field. The relations between measured and original distributions are derived. Some components of the directional distribution of sound field can be calculated from the measured distribution. This is especially important, when the directivity of the microphone used is not high. The informations of the directional distribution of sound field which can be obtained from the measurements are limited by the directional characteristic of microphone. Usually, the non-uniformity of the measured directional distribution is less than that of the sound field.更多还原