非旋转对称电声器件的指向性因子测量

Measurement of the directivity factor of a non-rotational symmetry electroacoustic device

本文介绍了精确测量非旋转对称电声器件的指向性因子的原理和方法．并根据IEC1183标准规定的方法，对B＆K2209声级计的指向性因子进行了测量，提供了一个非旋转对称装置的指向性因子测量的例子。

The directivity factor of B& K 2209 sound level meter is measured according to IEC 1183 standand, providing an example of exact measurement of the directivity factor of a non-rotational symmetry equipment.