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Earphone receiver attenuation measurement technique

阅读:249发布:2022-02-18

专利汇可以提供Earphone receiver attenuation measurement technique专利检索,专利查询,专利分析的服务。并且A system for measuring the effectiveness of the sound attenuating function of an earphone sound attenuation cover by employing the earphone transducer as a microphone and measuring the noise level with the ear cover in place on the user''s ear and with the cover removed, the difference in decibels being interpreted as the acoustic attenuation provided by the ear cover.,下面是Earphone receiver attenuation measurement technique专利的具体信息内容。

1. A method for measuring the sound attenuating effectiveness and seal fit of an earphone ear cover in a noise environment, comprising the steps of: a. using an earphone as a microphone to transmit the noise level within the ear cover, first, with the ear cover in place on the user, and second, with the ear cover removed; b. measuring the output transmitted by the transducer in both instances, the difference between the outputs being the acoustic attenuation provided by the ear cover.
2. A method as in claim 1 wherein the effectiveness of the sound attenuating function of said ear cover is read-out directly in decibels on a sound level measuring means.
3. A method as in claim 1 wherein said output level is measured by means responsive to select frequencies of the noise spectrum.
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