摘要
传声器的相关性能指标包括输出阻抗、灵敏度、频率响应、指向性、谐波失真、最大声压级、信噪比等。针对传声器指向性特性的测量,先详细介绍了传声器的类型及其指向性分类,再对全消声室及丹麦Bruel&Kjaer PULSE电声测量系统进行了简要论述。最后,用PULSE电声测量系统在自由场环境下进行了传声器指向性的测量。
Performance indexes related to microphones include output impedance, sensitivity, frequency response, directivity, harmonic distortion, the maximum sound pressure level, SNR, et al. Aiming at measuring microphone directivity, it is firstly described in detail the type of directional microphones and classification. Then the whole anechoic chamber and Denmark Bruel ＆ Kjaer PULSE electro-acoustic measurement system are briefly discussed. Finally, microphone directivity measurements are carried out by PULSE electro-acoustic measurement system in free-field environment.
出处
《电声技术》
2015年第8期88-92,共5页
Audio Engineering
关键词
传声器
指向性
全消声室
PULSE电声测量系统
microphone
directivity
anechoic chamber
PULSE electro-acoustic measurement system
