EEPW论坛

我们一般测试都用dB来表示麦克风的灵敏度，表示的在一定声压激励下麦克风的电平响应。现在有个客户给我发封E-mail，说我们的产品有三个灵敏度偏低，三个不良品他是这么描述的：

3pcs have defective microphone sensitivity:

   #15 measurements from a 700Hz audio source at an amplitude of (.5V +/-0.60KHz) (1.5V +/-1.65KHz) (2.5V +/-1.90KHz)

   #17 measurements from a 700Hz audio source at an amplitude of (.5V +/-0.50KHz) (1.5V +/-1.50KHz) (2.5V +/-1.85KHz)

   #20 measurements from a 700Hz audio source at an amplitude of (.5V +/-0.60KHz) (1.5V +/-1.75KHz) (2.5V +/-1.95KHz)

All defects were verified on 3 IRAD test radios S/N: 37GA0767, 37GA0761, & 37GA0817.

而OK的产品他是这么描述的： 

Microphone sensitivity rating is very good.  Average measurements from a 700Hz audio source at an amplitude of (.5V +/-1.10KHz) (1.5V +/-1.94KHz) (2.5V +/-2.12)

我想请教论坛各位高手，这是怎么样的一个测试方法？其测试原理是什么？

叩谢了！搞不定客户要退我们100W的货- -