Finally the performance of the electret microphone tester is described.

最后简要介绍了该驻极体传声器测试仪所达到的性能指标。

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The electret microphone is a new microphone which is made with the electret material.

驻极体传声器是一种用驻极体材料制造的新型传声器。

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The electret microphone tester is used to test electret microphone's sensitivity and frequency response.

驻极体传声器测试仪是用来测试传声器的灵敏度及频率响应的。

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Lucent researchers replaced it with an electret microphone, which picks up sound using a polymer foil more than 1, 000 times smaller than the diaphragm in a dynamic microphone that picks up fewer vibrations.

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