Direct Mounting Considerations for FG Series Cylindrical Microphone

PublishTime：2022-02-24

■The extremely small size and shape of the FG series microphone make it well suited for CIC (Completely In Canal) hearing instruments. The cylindrical shape also allows for easy mounting of the transducer directly to the instrument faceplate. Although use of a tubed port is a reasonable option, the FG microphone is designed for direct mounting to the faceplate where space considerations do not allow for the additional tube, thereby maximizing the size advantage of the FG microphone
■For direct mounting to be practical, it is important that the microphone have very low vibration sensitivity, an important design consideration during the development of the FG microphone. As seen in figure 1, below, the FG microphone has notably lower vibration sensitivity than a typical hearing aid microphone. This reduced vibration sensitivity is particularly beneficial at low frequencies where more of the vibration energy is concentrated and also at typical peak resonance frequencies (~2.7kHz) where microphone acoustic sensitivity is often the greatest. The FG microphone provides less opportunity for mechanical feedback due to vibration without the need for additional mechanical isolation

Brand of Product：	Knowles
Part#：	FG Series More Part#
Product Category：	Cylindrical Microphone More
Application：	More
Data Type：	Solutions More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	03-0201
Version Number：
Data Encoding：	AN-2
Data Size：	77 KB

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