传声器指向性是指传声器灵敏度随声波入射方向不同而变化的特性。传声器指向性大体有三种类型:全向(又称无向)、单向、双向。指向性通常用指向性图案、指向性频率响应、指向性指数来表示。指向性图案是在不同入射角时,传声器对某一频率(例如1000Hz)声波的灵敏度响应,在极座标中的图式。全向传声器对不同方向的声音灵敏度相同,因此指向性图案是一个圆。单向传声器正面灵敏度比背面灵敏度高得多,按不同程度,单向传声器指向性 Microphone directivity refers to the microphone sensitivity changes with the incident direction of sound wave characteristics. Microphone directivity in general there are three types: omnidirectional (also known as undirectional), one-way, two-way. Directivity is usually used directional patterns, directional frequency response, directivity index to represent. The directivity pattern is the sensitivity of the microphone to a particular frequency (eg, 1000 Hz) sound wave at different angles of incidence, plotted in polar coordinates. Omnidirectional microphones have the same sensitivity to different directions of sound, so the directional pattern is a circle. One-way microphone front sensitivity than the sensitivity of the back much higher, according to varying degrees, one-way microphone directivity